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EP0526294B1 - System for carrying out measurements or interventions in a drilled well or while drilling - Google Patents

System for carrying out measurements or interventions in a drilled well or while drilling Download PDF

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Publication number
EP0526294B1
EP0526294B1 EP92401993A EP92401993A EP0526294B1 EP 0526294 B1 EP0526294 B1 EP 0526294B1 EP 92401993 A EP92401993 A EP 92401993A EP 92401993 A EP92401993 A EP 92401993A EP 0526294 B1 EP0526294 B1 EP 0526294B1
Authority
EP
European Patent Office
Prior art keywords
cable
support
connector
drill string
assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP92401993A
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German (de)
French (fr)
Other versions
EP0526294A1 (en
Inventor
Christian Wittrisch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IFP Energies Nouvelles IFPEN
Original Assignee
IFP Energies Nouvelles IFPEN
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Publication date
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Publication of EP0526294A1 publication Critical patent/EP0526294A1/en
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Publication of EP0526294B1 publication Critical patent/EP0526294B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • E21B23/14—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for displacing a cable or a cable-operated tool, e.g. for logging or perforating operations in deviated wells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H01R13/633—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for disengagement only

Definitions

  • the present invention relates to a system and a device for carrying out measurements and / or interventions in a well drilled or being drilled by means of an electrical connection connecting the surface to a probe comprising means for measuring and / or d 'intervention.
  • the electrical connection comprises a section of cable cooperating at its lower end with measurement and / or intervention means and comprising at its other upper end a first intermediate connector secured to a support, a second intermediate connector adapted to cooperate electrically with the first intermediate connector and attached to a cable connected to the surface.
  • Patent FR-2501777 discloses a method and a device for carrying out measurements and / or interventions from a probe fixed to the end of a rod train, but this document only relates to logging devices. and has no intermediate connectors. Rotation of the entire packing in the well is not possible when the probe is connected because of the presence inside the drill string of the coaxial or annular cable when using a fitting with side window.
  • the present invention makes it possible to connect measuring and / or intervention means and in particular to allow the rotation of the whole of the lining and the addition of rods without having the need to bring the means up to the surface with all of the coaxial cable thanks to intermediate connectors and a suitable support.
  • Document GB-1557863 discloses a method and a device for transmitting information coming from a probe lowered into a drill string, said probe being suspended from a section of cable, said section being connected to the surface by means of 'a connector and a cable.
  • the probe is lowered to the cable in the packing and must therefore have an outside diameter compatible with the inside passage of the tubular packing. The installation of the section suspension device takes place on the surface.
  • the present invention allows the descent into a drill string of a probe comprising measuring and / or intervention means, said probe being fixed to the end of a section of cable which comprises a support for a first connector intermediate.
  • the connection is made by a second intermediate connector fixed to the end of a cable connected with the surface.
  • the support is secured to the rod train by remote control from the surface. It then suffices to raise the length of the cable above the second intermediate connector, which only causes a very short time loss and allows high capacity transmissions thanks to the cable.
  • this invention is economically very advantageous for the phase of controlling the trajectory of the borehole in the curvature and in the substantially horizontal part.
  • the tools used in the prior art are in particular transmission by pressure waves in the fluid in order to be able to rotate the entire lining without being hindered by a cable or not having to wind up the entire cable.
  • the length of the section can correspond to the start dimension of the deviation or Kick-off-point, and as the length of drilling in short radius is limited to a few hundred meters, the maneuvers of the cable connected to the surface are simple and fast during the whole deviation phase.
  • the frequency of measurements and interventions with the invention is thus comparable to that which can be obtained with transmissions without electric cable and moreover with less cost and less complexity.
  • rotation of the entire packing is allowed when the cable is brought to the surface.
  • the invention will be advantageously applied because it provides mechanical support to take up the weight of the cable and the tension forces generated on the cable in particular by an energetic circulation of a fluid refrigerant. Indeed, in very deep boreholes, the tension that a continuous cable would bear is greater than the tension authorized.
  • the solution is therefore to have intermediate supports of sections of acceptable length.
  • the connector may include means for locking said probe (25).
  • the support secured to any zone of the inner channel of the drill string can keep said section substantially taut.
  • the support may have cable recovery means at its upper end.
  • the drill string may include a special connector provided with a side opening through which said cable is placed.
  • the connector may include a system for angular orientation of said probe.
  • the assembly may include directional drilling means and means for controlling the position of said drilling means from the surface.
  • the assembly may include other measurement and / or intervention means electrically connected to a first connector integral with said assembly and in that said probe comprises a second connector adapted to connect with the first.
  • At least one of the second intermediate connector or of the probe may include a ballast such as load bars and / or a pumping device in the channel of the drill string.
  • the support may include a shaft secured on one side to said first electrical connector and on the other to a section of cable comprising electrical conductors, a body coaxial with said shaft, said body being able to move in translation between two extreme positions relative to said shaft, in a first position the support can be anchored, in the second position the support can be free to be moved and a locking system can secure said body to said shaft in the second position.
  • the locking system can be remote controlled electrically and can be reversible.
  • the body may include friction pads.
  • the support can include inoperative anchoring corners when said body is in second position, said corners can be adapted to anchor the support in the interior space of the drill string by the cooperation of expansion means when said body is in first position and when the expansion means are integral with the shaft, the corners may be integral with the body or vice versa.
  • the system according to the invention can be used for recording measurements and / or for occasional interventions in an oil well, while having the possibility of making rod additions and / or turning the entire drill string and said set between each measurement and / or intervention.
  • the present invention relates to the configuration of FIG. 5.
  • FIG. 5 represents a well 1 in which there is a drill string 2 at the end of which is assembled an assembly 3 comprising a connector 26.
  • the connector 26 includes a guide and a centering of the probe so that it can function properly .
  • This connection can also include a conventional mechanical anchoring, for example that described in the patent FR-2501777 already cited and possibly a system for angular orientation of said Mule-shoe type probe.
  • the assembly 3 does not include measurement and / or intervention means.
  • a probe 25 comprising measuring and / or intervention means is mechanically fixed to the lower end of a section of cable 6 comprising electrical conductors.
  • the upper end of this section has a first intermediate connector 8 secured to a support 7 which secures this first intermediate connector in the inner channel of the drill string.
  • a second intermediate connector 9 fixed to the end of a cable 10 is connected to the first intermediate connector.
  • the cable 10 has electrical conductors, leaves the upper end of the rod train to pass on pulleys before being wound on a winch 11.
  • the electrical conductors of this cable are connected to an electrical joint rotating around the axis of the winch drum to be connected to a control cabin 12.
  • a circulation head equipped with the conduit 14 makes it possible to pump the drilling fluid into the interior channel of the drill string, to supply the downhole motor to actuate the drilling tool and to clean the ring finger of the drilling debris.
  • the circulation head has an annular seal 13 adapted to the cable 10. This head is well known in the prior art.
  • the probe comprising measurement and intervention means are electrically connected to the surface by the section of cable 6, the two intermediate connectors and the cable 10. It is then possible to operate practically over the length of rods located above the drilling floor.
  • FIGS. 1, 1A, 2, 2A, 3, 4A and 4B relate to the installation or removal of the section 6, of the support 7, of the connection of the probe 25 and of the connector 26, of the intermediate connectors 8 and 9, wired rods.
  • the cooperation of the end of the probe and of the connector 26 can be a simple guidance, a mechanical anchoring, an angular guidance or even an electrical cooperation if the two elements 25 and 26 cooperating with each other have a pair of connectors 4 and 5.
  • FIG. 1 represents a well 1 in which there is a drill string 2 at the end of which is assembled an assembly 3 comprising a first connector 4 secured to said assembly 3.
  • the assembly comprises means of measurements and interventions connected electrically to the first connector 4.
  • a second connector 5 connected to the connector 4 is mechanically fixed to the lower end of a section of cable 6 comprising electrical conductors.
  • the upper end of this section has a first intermediate connector 8 secured to a support 7 which secures this first intermediate connector in the inner channel of the drill string.
  • the connection of connectors 4 and 5 is locked by a mechanical system which will be described later.
  • a second intermediate connector 9 fixed to the end of a cable 10 is connected to the first intermediate connector.
  • the cable 10 comprises electrical conductors, sound from the upper end of the rod train to pass over pulleys before being wound on a winch 11.
  • the electrical conductors of this cable are connected to an electrical joint rotating around the axis of the winch drum to be connected to a control cabin 12.
  • a circulation head equipped with the conduit 14 makes it possible to pump the drilling fluid into the inner channel of the drill string, to supply the downhole motor to make turn the drilling tool and clean the ring finger of drilling debris.
  • the circulation head is suitable for making an annular seal 13 around the cable 10. This head is well known in the prior art.
  • the measurement and intervention means are electrically connected to the surface by the two pairs of connectors, the cable section 6 and the cable 10. It is then possible to operate practically on the length of rods lying above the drilling floor.
  • deflection tools such as elbow connector and stabilizer with variable geometry which can be controlled by means of the electrical connection.
  • the operations begin with the descent into the well 1 of the assembly 3 and of its first connector 4 at the end of a length of drill string (FIG. 2).
  • a connection 15 is screwed on the top of the rods and the cable section 6 is formed as follows: the second is mechanically fixed connector 5 on the end of a length of cable wound on a logging winch, this cable is lowered into the drill string and the connectors 4 and 5 are connected either by gravity or by pumping as described in the patent FR -2501777, the weight of the cable is maintained by collars above the connector 15, the cable is cut substantially above the connector and the first intermediate connector is mechanically fixed on the upper end of the section.
  • the first intermediate connector is secured to a support 7 comprising a jacket 19, said support is then secured to the connector 15.
  • FIG. 3 details the support 7 and the connector 15.
  • the connector 5 is lowered into the drill string at the end of a cable and using a winch.
  • the cable is cut and supported at the level of the upper rod, then it is mechanically fixed while electrically connecting the cable of the section 6 to the connector 8 secured to the jacket 19, which is already put in place in the connector 15.
  • assembly fitting 15, liner 19 and section 6 via a winch and thread 17, then thread 16 is screwed onto the upper rod of the drill string.
  • FIG. 2A illustrates this connection which is made using the same techniques as for connectors 4 and 5. Whenever it is necessary to execute an operation made impossible given the presence of the coaxial cable 10, it will suffice first to undock the second intermediate connector 9, to raise the cable 10 to the surface and then to operate. It is thus possible in particular to add rods in a conventional manner to deepen the borehole, to rotate the whole of the lining from a surface rotation means such as a rotation table or a motorized injection head.
  • a surface rotation means such as a rotation table or a motorized injection head.
  • the movements can be made both on the descent and on the ascent of the drill string.
  • FIG. 3 illustrates an embodiment of a connection and support system 7 of the first intermediate connector 8.
  • the cable section 6 is mechanically fixed to the connector 8 by a nut 32.
  • the conductors of the cable 6 are connected to the connector 8 by the conductors 31.
  • a connector 15 includes lower 16 and upper 17 fixing means to said drill string.
  • Suspension arms 18 block the axial downward movement of a jacket 19 by cooperation with a shoulder 20 of the connector 15.
  • the arms 18 are adapted to allow free circulation of the fluid in the annular thus created by the outside of the jacket 19 and the inside of said fitting 15.
  • the arms are secured to the fitting 15 by means 30.
  • the first intermediate connector 8 is integral with the liner 19. A traction applied to the liner and higher to the shear strength of the screw 21, releases the jacket upwards allowing the jacket, the first intermediate connector and the section 6 to rise.
  • the shirt 19 can also be fitted with fingers locking device remotely controlled from the surface as locking means 21.
  • the second intermediate connector 9 connected to the first is locked by means of fingers 22 secured to the jacket, the Said fingers cooperating with a retaining part 23 secured to the second intermediate connector. This retaining piece 23 can release the second connector when it is broken or be erasable by remote control from the surface of a motorization located above the intermediate connector 9.
  • the upper end of the jacket 19 includes a device 24 adapted to cooperate with a recovery tool or overshot (not shown here) lowered inside the rod train to recover the jacket, its first intermediate connector and the entire cable section 6. It is also possible to hang an overshot on the shirt 19 by means of the fingers 22.
  • the support 7 cooperates directly with the means for connecting the rods to each other, such as the male and female fittings, without adding an intermediate fitting 15. It suffices that the arms 18 are adapted to be secured to the rods when the male and female threads are screwed together.
  • FIGS. 4A and 4B the connection between the intermediate connectors is made on the surface and we descend into the interior of the drill string the connector 5, the section 6, the support 7 and its connector 8 connected with the connector 9 , using cable 10 and winch 11.
  • the connection of connectors 4 and 5 is as described above.
  • the fastening of the support 7 on the drill string from the surface is remote-controlled.
  • the production of the support 7 is illustrated by FIGS. 4A and 4B.
  • the support 7 is shown in the state in which it is lowered into the pipe 2. It comprises a first connector 8 secured to a jacket 19.
  • the jacket 19 is identical to that described in FIG. jacket 19 is integral with a shaft 33 at the end of which the cable section 6 is fixed by means of a nut 32.
  • Conductors 31 electrically connect the conductors of the cable section 6 to the intermediate connector 8.
  • Around the 'shaft 33 is disposed a body 34 comprising friction pads 35 and anchoring corners 36. This body is in lower support on a shoulder 37 secured to the shaft 33.
  • the body 34 is locked in the support position on the shoulder 37 by the cooperation of a finger 39 of a locking system 38 secured to the shaft and a hole 43 of the body 34.
  • Each anchoring corner 36 can pivot around an axis 40 perpendicular to the longitudinal axis of the support.
  • Springs (not shown) keep the corners closed around the shaft.
  • An expansion means 41 of the anchoring corners is integral with the shaft.
  • the friction pads 35 are pushed radially by springs 42. These springs 42 provide the necessary contact force between the pipe and the pads to have sufficient longitudinal friction, in addition, they allow the pads to retract as the sections of reduced diameter at the tubular connections.
  • the support 7 of the section 6 is connected to the surface by the cable 10 fitted at its lower end with the second intermediate connector 9.
  • the locking of this connector 9 is effected by the cooperation of the fingers 22 and of a retaining piece 23 secured to the second connector 9.
  • the locking system 38 is electrically controlled from the surface by means of the cable 10 connected to the shaft by the two connectors. It is advantageous that this lock is reversible, that is to say that one can unlock or lock by remote control in particular from the cable 10. Such a lock is known and can be achieved in particular using 'A motor acting on the fingers 39. But in this invention, we can in some cases be satisfied with an unlocking system by breaking the fingers 39, in particular by explosive. In another embodiment, the corners may be integral with the shaft, while the expansion means is integral with the body.
  • FIG. 4B shows said support in its state anchored in the pipe 2.
  • the lock system 38 was ordered to be unlocked then by means of the cable 10 the shaft is allowed to slide by a distance H.
  • the relative sliding between the body and the shaft is obtained by means of the friction pads which keep the body 34 relatively stationary relative to the pipe and by the action of a downward displacement force of the shaft.
  • This force can be provided in particular by the weight of the shaft, the weight of ballast secured to the second connector 9, the weight of the section 6 and / or the tension applied to the section 6 when its end is anchored in the assembly 3.
  • the support 7 according to the embodiment of FIG. 4A can be anchored without the preponderant action of the gravity. It is enough to tension the section to lengthen it by a length greater than H, then unlock the body of the shaft before releasing the tension to bring the support 7 into the state shown in FIG. 4B.
  • the relative displacement of the length H between the shaft and the body causes the expansion means 41 and the anchoring corners to cooperate.
  • the conical shape of the expansion means pivots the corners around the axes 40 until these are applied to the wall of the pipe.
  • the displacement force as described above maintains the anchoring of the support 7 in the pipeline.
  • the external shape and the angle of pivoting of the corners allow the anchoring of the support on sections of the pipe of different diameters.
  • the tubulars used, drill rods, casing, tubing, etc. often have variations in internal diameter, particularly at the fittings.
  • the present support can be anchored at any level in a pipe having variations in internal diameter.
  • the separation or disengagement of the support is done by lowering again the cable 10 and its connector 9 equipped with a part 23 of resistance to rupture greater than the anchoring force. This resistance must also be greater than the force necessary to disengage the section 6 of the assembly 3, in the case where it is not not remote controlled. If the retaining part can be erased by remote control, this operation of the cable 10 will be avoided.
  • the supports according to the embodiments of FIG. 3 and 4A include electronic means which can be raised with the said supports in particular to amplify or help the transmission of information between the probe 25 or the assembly 3 and the surface.
  • These electronic means can be located at the upper end of said section 6 or at the lower end of cable 10.
  • the support 7 is possibly adapted to be able to keep section 6 substantially taut, the connection of connectors 4 and 5 being locked in particular according to the same principle described in FIG. 3 for connectors 8 and 9 .
  • This last arrangement makes it possible to rotate the entire rod train and to make additions, without having to wind up a length of electric cable.
  • this solution can be mixed with the use of the cable 10 in particular by using above the wired rods an adapter fitting comprising an intermediate connector similar to the first intermediate connector 8.
  • the connection is made on this connector according to the present invention.
  • the known wired rods leave the interior passage free, it will therefore be possible to reassemble said section through these rods using a recovery tool and a suitable support 7.
  • the descent of the probe 25 takes place in an identical manner to the connector 5, that is to say by gravity or by pumping.
  • the probe 25 is adapted to pass through the channel of the drill string, possibly of the wired rods and of the connector 15 if it exists.
  • the probe 25 may include a slide system and load bar facilitating the length adjustment of the cable section 6.
  • Cable 10 can pass through a fitting with a side window and rise to the surface by the annular well-drill string. This use is advantageous in the case where the operations do not require or more possible rotation of the entire drill string.
  • a two-part side window connection will be used which does not require threading of one end of the cable through the window.
  • the assembly 3 comprises measurement and / or intervention means which are not electrically connected by the electrical connection provided by the section 6 and the cable 10.
  • These means may in particular comprise transmission means by pressure or electromagnetic waves.
  • measurement and / or intervention means are electrically connected to a first connector 4 secured to said assembly and in this case the probe 25 will also include at its end a second connector 5 suitable for connect with the first.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
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  • Earth Drilling (AREA)

Description

La présente invention concerne un système et un dispositif pour effectuer des mesures et/ou des interventions dans un puits foré ou en cours de forage par le moyen d'une liaison électrique reliant la surface à une sonde comportant des moyens de mesure et/ou d'intervention.The present invention relates to a system and a device for carrying out measurements and / or interventions in a well drilled or being drilled by means of an electrical connection connecting the surface to a probe comprising means for measuring and / or d 'intervention.

La liaison électrique comporte un tronçon de câble coopérant par son extrémité inférieure avec des moyens de mesure et/ou d'intervention et comportant à son autre extrémité supérieure un premier connecteur intermédiaire solidaire d'un support, un second connecteur intermédiaire adapté à coopérer électriquement avec le premier connecteur intermédiaire et fixé à un câble relié à la surface.The electrical connection comprises a section of cable cooperating at its lower end with measurement and / or intervention means and comprising at its other upper end a first intermediate connector secured to a support, a second intermediate connector adapted to cooperate electrically with the first intermediate connector and attached to a cable connected to the surface.

On connaît par le brevet FR-2501777 une méthode et un dispositif pour effectuer des mesures et/ou des interventions à partir d'une sonde fixée à l'extrémité d'un train de tige, mais ce document ne concerne que des appareils de diagraphies et ne possède pas de connecteurs intermédiaires. La rotation de l'ensemble de la garniture dans le puits n'est pas possible lorsque la sonde est connectée à cause de la présence à l'intérieur du train de tiges du câble coaxial ou annulaire dans le cas d'utilisation d'un raccord à fenêtre latérale.Patent FR-2501777 discloses a method and a device for carrying out measurements and / or interventions from a probe fixed to the end of a rod train, but this document only relates to logging devices. and has no intermediate connectors. Rotation of the entire packing in the well is not possible when the probe is connected because of the presence inside the drill string of the coaxial or annular cable when using a fitting with side window.

La présente invention permet de relier des moyens de mesure et/ou d'intervention et de permettre notamment la rotation de l'ensemble de la garniture et l'ajout de tiges sans avoir la nécessité de remonter à la surface les moyens avec la totalité du câble coaxial grâce à des connecteurs intermédiaires et d'un support adapté.The present invention makes it possible to connect measuring and / or intervention means and in particular to allow the rotation of the whole of the lining and the addition of rods without having the need to bring the means up to the surface with all of the coaxial cable thanks to intermediate connectors and a suitable support.

On connaît par le document GB- 1557863 une méthode et un dispositif pour transmettre des informations provenant d'une sonde descendue dans une garniture de forage, ladite sonde étant suspendue à un tronçon de câble, ledit tronçon étant relié à la surface par le moyen d'un connecteur et d'un câble. La sonde est descendue au câble dans la garniture et doit donc avoir un diamètre extérieur compatible avec le passage intérieur de la garniture tubulaire. La mise en place du dispositif de suspension du tronçon se fait à la surface.Document GB-1557863 discloses a method and a device for transmitting information coming from a probe lowered into a drill string, said probe being suspended from a section of cable, said section being connected to the surface by means of 'a connector and a cable. The probe is lowered to the cable in the packing and must therefore have an outside diameter compatible with the inside passage of the tubular packing. The installation of the section suspension device takes place on the surface.

Avantageusement, la présente invention permet la descente dans un train de tiges d'une sonde comportant des moyens de mesure et/ou d'intervention, ladite sonde étant fixée au bout d'un tronçon de câble lequel comporte un support d'un premier connecteur intermédiaire. La liaison est effectuée par un second connecteur intermédiaire fixé à l'extrémité d'un câble relié avec la surface. Pour faire des manoeuvres de tiges en descente ou en remontée, le support est solidarisé avec le train de tige par télécommande à partir de la surface. Il suffit alors de remonter la longueur du câble au-dessus du second connecteur intermédiaire, ce qui ne fait perdre qu'un temps très court et autorise des transmissions hautes capacités grâce au câble. Ne pas avoir de câble dans l'annulaire comme il est courant d'en avoir dans la profession quand on utilise un raccord à fenêtre latérale, est également avantageux lorsque la sécurité impose d'avoir une étanchéité annulaire à la tête de puits soit continuellement lorsque l'on fore à l'air ou à la mousse, soit épisodiquement lorsque la pression de fond est en déséquilibre. Dans ces cas, le câble est une gène et parfois un danger.Advantageously, the present invention allows the descent into a drill string of a probe comprising measuring and / or intervention means, said probe being fixed to the end of a section of cable which comprises a support for a first connector intermediate. The connection is made by a second intermediate connector fixed to the end of a cable connected with the surface. To make rod maneuvers down or up, the support is secured to the rod train by remote control from the surface. It then suffices to raise the length of the cable above the second intermediate connector, which only causes a very short time loss and allows high capacity transmissions thanks to the cable. Not having a cable in the ring finger as it is common to have in the profession when using a side window fitting, is also advantageous when security requires having an annular seal at the well head is continuously when it is drilled with air or foam, either sporadically when the bottom pressure is unbalanced. In these cases, the cable is a gene and sometimes a danger.

Dans certains forages fortement déviés, notamment à petit rayon de courbure, cette invention est économiquement très intéressante pour la phase de contrôle de la trajectoire du forage dans la courbure et dans la partie sensiblement horizontale. En effet, les outils utilisés dans l'art antérieur sont notamment à transmission par ondes de pression dans le fluide afin de pouvoir faire tourner l'ensemble de la garniture sans être gêné par un câble ou de ne pas avoir à remonter tout le câble. Avec l'invention, la longueur du tronçon peut correspondre à la cote de démarrage de la déviation ou Kick-off-point, et comme la longueur du forage en court rayon est limitée à quelques centaines de mètres, les manoeuvres du câble relié à la surface sont simples et rapides pendant toute la phase de déviation. La fréquence des mesures et interventions avec l'invention est ainsi comparable à ce que l'on peut obtenir avec les transmissions sans câble électrique et de plus avec un coût et une complexité moindre. De plus, la rotation de l'ensemble de la garniture est permise quand le câble est remonté à la surface.In certain highly deviated boreholes, in particular with a small radius of curvature, this invention is economically very advantageous for the phase of controlling the trajectory of the borehole in the curvature and in the substantially horizontal part. Indeed, the tools used in the prior art are in particular transmission by pressure waves in the fluid in order to be able to rotate the entire lining without being hindered by a cable or not having to wind up the entire cable. With the invention, the length of the section can correspond to the start dimension of the deviation or Kick-off-point, and as the length of drilling in short radius is limited to a few hundred meters, the maneuvers of the cable connected to the surface are simple and fast during the whole deviation phase. The frequency of measurements and interventions with the invention is thus comparable to that which can be obtained with transmissions without electric cable and moreover with less cost and less complexity. In addition, rotation of the entire packing is allowed when the cable is brought to the surface.

Dans le cas de forage très profond et donc à très haute température, l'invention sera avantageusement appliquée car elle fournit un support mécanique pour reprendre le poids du câble et les efforts de tension générés sur le câble notamment par une circulation énergique d'un fluide réfrigérant. En effet, dans des forages de grande profondeur, la tension que supporterait un câble continu est supérieure à la tension autorisée. La solution est donc d'avoir des supports intermédiaires de tronçons de longueur acceptable.In the case of very deep drilling and therefore at very high temperature, the invention will be advantageously applied because it provides mechanical support to take up the weight of the cable and the tension forces generated on the cable in particular by an energetic circulation of a fluid refrigerant. Indeed, in very deep boreholes, the tension that a continuous cable would bear is greater than the tension authorized. The solution is therefore to have intermediate supports of sections of acceptable length.

Le document US-A-4.325.438 décrit un moyen pour allonger un câble reliant une sonde à la surface du sol. Le dispositif comporte une longueur de câble en réserve dans un organe déplacé par traction dans la nouvelle tige ajoutée.Document US-A-4,325,438 describes a means for lengthening a cable connecting a probe to the surface of the ground. The device has a length of cable in reserve in a member moved by traction in the new rod added.

La présente invention concerne un système pour effectuer des mesures et/ou des interventions dans un puits foré ou en cours de forage et comportant en combinaison :

  • un train de tiges s'étendant dans ledit puits,
  • un ensemble fixé à l'extrémité du train de tiges et comportant un raccord de liaison,
  • une sonde comportant des moyens de mesures et/ou d'interventions, ladite sonde étant située dans l'espace intérieur dudit train de tiges et liée audit ensemble par l'intermédiaire dudit raccord de liaison,
  • un tronçon de câble de longueur finie comportant des conducteurs électriques dont l'une extrémité est fixée à la sonde et l'autre extrémité est fixée à un support, la distance entre ledit support et ladite sonde étant fixée par ladite longueur finie dudit tronçon,
  • un support déplaçable en direction de la surface et du fond dans au moins une portion de l'espace intérieur de la garniture, ledit support comportant des moyens de solidarisation audit train de tiges, lesdits moyens de solidarisation étant télécommandés depuis la surface,
  • un premier connecteur électrique intermédiaire solidaire dudit support,
  • un second connecteur électrique intermédiaire comportant des moyens de coopération avec ledit premier connecteur intermédiaire dans l'espace intérieur du train de tiges,
  • un câble comportant des conducteurs électriques reliés électriquement d'un coté à la surface et de l'autre au second connecteur intermédiaire fixé mécaniquement à l'extrémité du câble, ledit câble étant déplaçable dans au moins une portion du train de tiges.
The present invention relates to a system for carrying out measurements and / or interventions in a well drilled or during drilling and comprising in combination:
  • a drill string extending in said well,
  • an assembly fixed to the end of the drill string and comprising a connection fitting,
  • a probe comprising means for measurement and / or intervention, said probe being located in the interior space of said drill string and connected to said assembly by means of said connection fitting,
  • a section of cable of finite length comprising electrical conductors, one end of which is fixed to the probe and the other end of which is fixed to a support, the distance between said support and said probe being fixed by said finished length of said section,
  • a support movable in the direction of the surface and the bottom in at least a portion of the interior space of the lining, said support comprising means for securing to said drill string, said securing means being remotely controlled from the surface,
  • a first intermediate electrical connector secured to said support,
  • a second intermediate electrical connector comprising means of cooperation with said first intermediate connector in the interior of the drill string,
  • a cable comprising electrical conductors electrically connected on one side to the surface and on the other to the second intermediate connector mechanically fixed to the end of the cable, said cable being movable in at least a portion of the drill string.

Le raccord peut comporter des moyens de verrouillage de ladite sonde (25).The connector may include means for locking said probe (25).

Le support solidarisé sur une zone quelconque du canal intérieur du train de tiges peut maintenir sensiblement tendu ledit tronçon.The support secured to any zone of the inner channel of the drill string can keep said section substantially taut.

Le support peut comporter sur son extrémité supérieure des moyens de repêchage au câble.The support may have cable recovery means at its upper end.

Le train de tiges peut comporter un raccord spécial muni d'une ouverture latérale à travers laquelle ledit câble est placé.The drill string may include a special connector provided with a side opening through which said cable is placed.

Le raccord peut comporter un système d'orientation angulaire de ladite sonde.The connector may include a system for angular orientation of said probe.

L'ensemble peut comporter des moyens de forage directionnels et des moyens de contrôle de la position desdits moyens de forage depuis la surface.The assembly may include directional drilling means and means for controlling the position of said drilling means from the surface.

L'ensemble peut comporter d'autres moyens de mesure et/ou d'intervention reliés électriquement à un premier connecteur solidaire audit ensemble et en ce que ladite sonde comporte un second connecteur adapté à se connecter avec le premier.The assembly may include other measurement and / or intervention means electrically connected to a first connector integral with said assembly and in that said probe comprises a second connector adapted to connect with the first.

L'un au moins du second connecteur intermédiaire ou de la sonde peut comporter un lest tel des barres de charge et/ou un dispositif de pompage dans le canal du train de tiges.At least one of the second intermediate connector or of the probe may include a ballast such as load bars and / or a pumping device in the channel of the drill string.

Le support peut comporter un arbre solidaire d'un coté audit premier connecteur électrique et de l'autre à un tronçon de câble comportant des conducteurs électriques, un corps coaxial audit arbre ledit corps pouvant se déplacer en translation entre deux positions extrêmes relativement audit arbre, dans une première position le support peut être ancré, dans la seconde position le support peut être libre d'être déplacé et un système de verrouillage peut solidariser ledit corps audit arbre dans la seconde position.The support may include a shaft secured on one side to said first electrical connector and on the other to a section of cable comprising electrical conductors, a body coaxial with said shaft, said body being able to move in translation between two extreme positions relative to said shaft, in a first position the support can be anchored, in the second position the support can be free to be moved and a locking system can secure said body to said shaft in the second position.

Le système de verrouillage peut être télécommandé électriquement et peut être réversible.The locking system can be remote controlled electrically and can be reversible.

Le corps peut comporter des patins de friction.The body may include friction pads.

Le support peut comporter des coins d'ancrage inopérants quand ledit corps est en seconde position, lesdits coins peuvent être adaptés à ancrer le support dans l'espace intérieur du train de tiges par la coopération de moyens d'expansion lorsque ledit corps est en première position et lorsque les moyens d'expansion sont solidaires de l'arbre, les coins peuvent être solidaires du corps ou inversement.The support can include inoperative anchoring corners when said body is in second position, said corners can be adapted to anchor the support in the interior space of the drill string by the cooperation of expansion means when said body is in first position and when the expansion means are integral with the shaft, the corners may be integral with the body or vice versa.

Le système selon l'invention peut être utilisé à l'enregistrement de mesures et/ou à des interventions ponctuelles dans un puits pétrolier, tout en ayant la possibilité de faire des ajouts de tiges et/ou tourner l'ensemble du train de tiges et ledit ensemble entre chaque mesure et/ou intervention.The system according to the invention can be used for recording measurements and / or for occasional interventions in an oil well, while having the possibility of making rod additions and / or turning the entire drill string and said set between each measurement and / or intervention.

La présente invention sera mieux comprise et ses avantages apparaîtront plus nettement à la description qui suit d'exemples nullement limitatifs illustrés par les figures ci-annexées, parmi lesquelles :

  • la figure 1 représente un ensemble de forage fixé à l'extrémité d'un train de tiges et relié à la surface par une liaison électrique,
  • la figure 1A représente l'ensemble avant la connexion,
  • la figure 2 représente une autre étape de la connexion,
  • la figure 2A représente l'étape précédente à la connexion du connecteur intermédiaire,
  • la figure 3 représente une réalisation du support des connecteurs intermédiaires,
  • les figures 4A et 4B représentent une autre réalisation du support des connecteurs intermédiaires.
  • la figure 5 représente la configuration selon l'invention,
The present invention will be better understood and its advantages will appear more clearly on the following description of nonlimiting examples illustrated by the appended figures, among which:
  • FIG. 1 represents a drilling assembly fixed to the end of a drill string and connected to the surface by an electrical connection,
  • FIG. 1A represents the assembly before connection,
  • FIG. 2 represents another step of the connection,
  • FIG. 2A represents the previous step at the connection of the intermediate connector,
  • FIG. 3 represents an embodiment of the support for the intermediate connectors,
  • Figures 4A and 4B show another embodiment of the support of the intermediate connectors.
  • FIG. 5 represents the configuration according to the invention,

La présente invention concerne la configuration de la figure 5.The present invention relates to the configuration of FIG. 5.

La figure 5 représente un puits 1 dans lequel se trouve un train de tiges 2 à l'extrémité duquel est assemblé un ensemble 3 comportant un raccord 26. Le raccord 26 comporte un guidage et un centrage de la sonde pour qu'elle puisse fonctionner convenablement. Ce raccord peut comporter également un ancrage mécanique conventionnel par exemple celui décrit dans le brevet FR-2501777 déjà cité et éventuellement un système d'orientation angulaire de ladite sonde type Mule-shoe.FIG. 5 represents a well 1 in which there is a drill string 2 at the end of which is assembled an assembly 3 comprising a connector 26. The connector 26 includes a guide and a centering of the probe so that it can function properly . This connection can also include a conventional mechanical anchoring, for example that described in the patent FR-2501777 already cited and possibly a system for angular orientation of said Mule-shoe type probe.

Dans la réalisation préférentielle, l'ensemble 3 ne comporte pas de moyens de mesure et/ou d'intervention.In the preferred embodiment, the assembly 3 does not include measurement and / or intervention means.

Une sonde 25 comportant des moyens de mesure et/ou d'intervention est fixée mécaniquement sur l'extrémité inférieure d'un tronçon de câble 6 comportant des conducteurs électriques. L'extrémité supérieure de ce tronçon comporte un premier connecteur intermédiaire 8 solidaire d'un support 7 qui solidarise ce premier connecteur intermédiaire dans le canal intérieur du train de tiges.A probe 25 comprising measuring and / or intervention means is mechanically fixed to the lower end of a section of cable 6 comprising electrical conductors. The upper end of this section has a first intermediate connector 8 secured to a support 7 which secures this first intermediate connector in the inner channel of the drill string.

Un second connecteur intermédiaire 9 fixé à l'extrémité d'un câble 10 est connecté sur le premier connecteur intermédiaire. Le câble 10 comporte des conducteurs électriques, sort de l'extrémité supérieure du train de tige pour passer sur des poulies avant d'être enroulé sur un treuil 11. Les conducteurs électriques de ce câble sont raccordés à un joint électrique tournant autour de l'axe du tambour de treuil pour être reliés à une cabine de contrôle 12.A second intermediate connector 9 fixed to the end of a cable 10 is connected to the first intermediate connector. The cable 10 has electrical conductors, leaves the upper end of the rod train to pass on pulleys before being wound on a winch 11. The electrical conductors of this cable are connected to an electrical joint rotating around the axis of the winch drum to be connected to a control cabin 12.

Une tête de circulation équipée du conduit 14 permet de pomper le fluide de forage dans le canal intérieur du train de tiges, d'alimenter le moteur de fond pour actionner l'outil de forage et de nettoyer l'annulaire des débris de forage. La tête de circulation comporte une étanchéité annulaire 13 adaptée au câble 10. Cette tête est bien connue de l'art antérieur. Dans la configuration de la figure 5, la sonde comportant des moyens de mesure et d'intervention sont reliés électriquement à la surface par le tronçon de câble 6, les deux connecteurs intermédiaires et le câble 10. On peut alors opérer pratiquement sur la longueur de tiges se trouvant au-dessus du plancher de forage.A circulation head equipped with the conduit 14 makes it possible to pump the drilling fluid into the interior channel of the drill string, to supply the downhole motor to actuate the drilling tool and to clean the ring finger of the drilling debris. The circulation head has an annular seal 13 adapted to the cable 10. This head is well known in the prior art. In the configuration of FIG. 5, the probe comprising measurement and intervention means are electrically connected to the surface by the section of cable 6, the two intermediate connectors and the cable 10. It is then possible to operate practically over the length of rods located above the drilling floor.

Les figures 1, 1A, 2, 2A, 3, 4A et 4B concernent la mise en place ou le retrait du tronçon 6, du support 7, de la connexion de la sonde 25 et du raccord 26, des connecteurs intermédiaires 8 et 9, des tiges câblées. La coopération de l'extrémité de la sonde et du raccord 26 peuvent être un simple guidage, un ancrage mécanique, un guidage angulaire ou même une coopération électrique si les deux éléments 25 et 26 coopérants entre eux comportent une paire de connecteurs 4 et 5.FIGS. 1, 1A, 2, 2A, 3, 4A and 4B relate to the installation or removal of the section 6, of the support 7, of the connection of the probe 25 and of the connector 26, of the intermediate connectors 8 and 9, wired rods. The cooperation of the end of the probe and of the connector 26 can be a simple guidance, a mechanical anchoring, an angular guidance or even an electrical cooperation if the two elements 25 and 26 cooperating with each other have a pair of connectors 4 and 5.

La description qui suit concerne ce dernier cas toutefois cette description s'applique parfaitement s'il n'y avait pas une paire de connecteurs électiques 4 et 5. Dans ces conditions la sonde 25 joue un rôle équivalent au second connecteur 5 et le raccord 26 le rôle du premier connecteur 4, hormis la fonction de coopération électrique des connecteurs 4 et 5.The description which follows relates to the latter case, however this description applies perfectly if there were not a pair of electrical connectors 4 and 5. Under these conditions the probe 25 plays an equivalent role to the second connector 5 and the connector 26 the role of the first connector 4, apart from the electrical cooperation function of connectors 4 and 5.

La figure 1 représente un puits 1 dans lequel se trouve un train de tiges 2 à l'extrémité duquel est assemblé un ensemble 3 comportant un premier connecteur 4 solidaire audit ensemble 3. L'ensemble comporte des moyens de mesures et d'interventions reliés électriquement au premier connecteur 4.FIG. 1 represents a well 1 in which there is a drill string 2 at the end of which is assembled an assembly 3 comprising a first connector 4 secured to said assembly 3. The assembly comprises means of measurements and interventions connected electrically to the first connector 4.

Un second connecteur 5 connecté sur le connecteur 4 est fixé mécaniquement sur l'extrémité inférieure d'un tronçon de câble 6 comportant des conducteurs électriques. L'extrémité supérieure de ce tronçon comporte un premier connecteur intermédiaire 8 solidaire d'un support 7 qui solidarise ce premier connecteur intermédiaire dans le canal intérieur du train de tiges. La connexion des connecteurs 4 et 5 est verrouillée par un système mécanique qui sera décrit plus loin.A second connector 5 connected to the connector 4 is mechanically fixed to the lower end of a section of cable 6 comprising electrical conductors. The upper end of this section has a first intermediate connector 8 secured to a support 7 which secures this first intermediate connector in the inner channel of the drill string. The connection of connectors 4 and 5 is locked by a mechanical system which will be described later.

Un second connecteur intermédiaire 9 fixé à l'extrémité d'un câble 10 est connecté sur le premier connecteur intermédiaire. Le câble 10 comporte des conducteurs électrique, son de l'extrémité supérieure du train de tige pour passer sur des poulies avant d'être enroulé sur un treuil 11. Les conducteurs électriques de ce câble sont raccordés à un joint électrique tournant autour de l'axe du tambour de treuil pour être reliés à une cabine de contrôle 12.A second intermediate connector 9 fixed to the end of a cable 10 is connected to the first intermediate connector. The cable 10 comprises electrical conductors, sound from the upper end of the rod train to pass over pulleys before being wound on a winch 11. The electrical conductors of this cable are connected to an electrical joint rotating around the axis of the winch drum to be connected to a control cabin 12.

Une tête de circulation équipée du conduit 14 permet de pomper le fluide de forage dans le canal intérieur du train de tiges, d'alimenter le moteur de fond pour faire tourner l'outil de forage et de nettoyer l'annulaire des débris de forage. La tête de circulation est adapté à faire une étanchéité annulaire 13 autour du câble 10. Cette tête est bien connue de l'art antérieur. Dans la configuration de la figure 1, les moyens de mesures et d'interventions sont reliés électriquement à la surface par les deux paires de connecteurs, le tronçon de câble 6 et le câble 10. On peut alors opérer pratiquement sur la longueur de tiges se trouvant au-dessus du plancher de forage.A circulation head equipped with the conduit 14 makes it possible to pump the drilling fluid into the inner channel of the drill string, to supply the downhole motor to make turn the drilling tool and clean the ring finger of drilling debris. The circulation head is suitable for making an annular seal 13 around the cable 10. This head is well known in the prior art. In the configuration of FIG. 1, the measurement and intervention means are electrically connected to the surface by the two pairs of connectors, the cable section 6 and the cable 10. It is then possible to operate practically on the length of rods lying above the drilling floor.

Concernant l'extrémité supérieure du train de tiges, on ne sortira pas du cadre de cette invention s'il s'agit d'une tige d'entraînement surmontée de la tête d'injection classique mais équipée d'un moyen d'étanchéité 13 à la sortie et autour du câble 10, également si l'on utilise une tête d'injection motorisée qui remplace à la fois la tige d'entraînement et la tête d'injection, ladite tête d'injection motorisée comportant évidemment le moyen d'étanchéité 13 autour du câble.Regarding the upper end of the drill string, it will not depart from the scope of this invention if it is a drive rod surmounted by the conventional injection head but equipped with a sealing means 13 at the outlet and around the cable 10, also if a motorized injection head is used which replaces both the drive rod and the injection head, said motorized injection head obviously comprising the means of seal 13 around the cable.

Dans cette réalisation l'ensemble 3 comportant un connecteur 4 peut être notamment constitué par :

  • des outils de diagraphies,
  • des outils de test de formation, comme une garniture de DST comportant un packer, une vanne sur le canal du train de tige et des capteurs de pression,
  • des outils d'échantillonnage comme un RFT de la Société Schlumberger,
  • des outils de mesures et d'interventions sur les équipements de puits en production,
  • des outils de perforation,
  • des outils avec ou sans moteur de fond pour le reforage de packer, de vannes, etc,
  • des moyens de forage avec ou sans moteur de fond et comportant des moyens de mesure et/ou d'intervention notamment des capteurs de localisation dudit ensemble.
In this embodiment, the assembly 3 comprising a connector 4 can in particular be constituted by:
  • logging tools,
  • training test tools, such as a DST packing comprising a packer, a valve on the stem train channel and pressure sensors,
  • sampling tools such as a Schlumberger RFT,
  • measurement and intervention tools for well equipment in production,
  • punching tools,
  • tools with or without downhole motor for re-drilling of packers, valves, etc.,
  • drilling means with or without downhole motor and comprising measurement and / or intervention means, in particular location sensors of said assembly.

Tous ces ensembles sont reliés à la surface par la liaison électrique et présentent l'avantage d'avoir la possibilité de transmissions ou de commandes directes.All these assemblies are connected to the surface by the electrical connection and have the advantage of having the possibility of direct transmissions or commands.

Dans le cas d'un ensemble de forage comportant un outil de forage, éventuellement un moteur de fond, des capteurs de localisation, il peut être avantageux d'avoir des outils déviateurs comme raccord coudé et stabilisateur à géométrie variable pouvant être contrôlés grâce à la liaison électrique.In the case of a drilling assembly comprising a drilling tool, possibly a downhole motor, location sensors, it may be advantageous to have deflection tools such as elbow connector and stabilizer with variable geometry which can be controlled by means of the electrical connection.

Le support 7 du premier connecteur intermédiaire 8 est solidarisé avec le train de tige conformément aux deux principes fonctionnels suivants:

  • 1)- soit il est mis en place sensiblement proche de la surface (figure 2), c'est-à-dire que dans ce cas la longueur du train de tige correspond sensiblement à la longueur du tronçon de câble 6,
  • 2)- soit le train de tiges est assemblé jusqu'à la cote où l'on a besoin de la liaison électrique pour raccorder ledit ensemble. On descend alors ensemble dans le canal intérieur des tiges le tronçon de câble 6 connecté au câble 10 (figure 1A) par la connexion des connecteurs intermédiaires 8 et 9, pour effectuer la connexion des connecteurs 4 et 5 et la solidarisation du support 7 sur le canal intérieur du train de tiges.
The support 7 of the first intermediate connector 8 is secured to the rod train in accordance with the following two functional principles:
  • 1) - either it is placed substantially close to the surface (FIG. 2), that is to say that in this case the length of the rod train corresponds substantially to the length of the cable section 6,
  • 2) - either the drill string is assembled to the level where the electrical connection is needed to connect said assembly. We then descend together into the inner channel of the rods the section of cable 6 connected to the cable 10 (FIG. 1A) by the connection of the intermediate connectors 8 and 9, in order to connect the connectors 4 and 5 and the connection of the support 7 to the inner channel of the drill string.

Dans le premier cas, les opérations débutent par la descente dans le puits 1 de l'ensemble 3 et de son premier connecteur 4 au bout d'une longueur de train de tiges (figure 2). Lorsque ledit ensemble a atteint une profondeur déterminée, par exemple en forage lorsque l'on est près du fond, on visse un raccord 15 sur le sommet des tiges et on constitue le tronçon de câble 6 de la manière suivante : on fixe mécaniquement le second connecteur 5 sur l'extrémité d'une longueur de câble enroulée sur un treuil de logging, on descend ce câble dans le train de tiges et on effectue la connexion des connecteurs 4 et 5 soit par gravité soit par pompage comme décrit dans le brevet FR-2501777, on maintient le poids du câble par des colliers au-dessus du raccord 15, on coupe le câble sensiblement au-dessus du raccord et on fixe mécaniquement le premier connecteur intermédiaire sur l'extrémité supérieure du tronçon.In the first case, the operations begin with the descent into the well 1 of the assembly 3 and of its first connector 4 at the end of a length of drill string (FIG. 2). When said assembly has reached a determined depth, for example in drilling when one is near the bottom, a connection 15 is screwed on the top of the rods and the cable section 6 is formed as follows: the second is mechanically fixed connector 5 on the end of a length of cable wound on a logging winch, this cable is lowered into the drill string and the connectors 4 and 5 are connected either by gravity or by pumping as described in the patent FR -2501777, the weight of the cable is maintained by collars above the connector 15, the cable is cut substantially above the connector and the first intermediate connector is mechanically fixed on the upper end of the section.

Le premier connecteur intermédiaire est solidarisé à un support 7 comportant une chemise 19, ledit support est ensuite solidarisé avec le raccord 15.The first intermediate connector is secured to a support 7 comprising a jacket 19, said support is then secured to the connector 15.

La figure 3 détaille le support 7 et le raccord 15.FIG. 3 details the support 7 and the connector 15.

Pour constituer le tronçon 6, on peut également suivre un autre mode opératoire : avant de visser le raccord 15, on descend dans le train de tiges le connecteur 5 au bout d'un câble et à l'aide d'un treuil. On coupe et on supporte le câble au niveau de la tige supérieure puis on fixe mécaniquement tout en reliant électriquement le câble du tronçon 6 au connecteur 8 solidaire de la chemise 19, laquelle est déjà mise en place dans le raccord 15. On soulève l'ensemble raccord 15, chemise 19 et tronçon 6 par l'intermédiaire d'un treuil et du filetage 17 puis on visse le filetage 16 sur la tige supérieure du train de tiges.To constitute the section 6, one can also follow another operating mode: before screwing the connector 15, the connector 5 is lowered into the drill string at the end of a cable and using a winch. The cable is cut and supported at the level of the upper rod, then it is mechanically fixed while electrically connecting the cable of the section 6 to the connector 8 secured to the jacket 19, which is already put in place in the connector 15. assembly fitting 15, liner 19 and section 6 via a winch and thread 17, then thread 16 is screwed onto the upper rod of the drill string.

Bien entendu, une fois que ledit tronçon 6 sera fabriqué et équipé de ces connecteurs, il est utilisable pour un autre forage. La longueur du train de tige sera adaptée à la longueur dudit tronçon. En général, on utilisera les mêmes tiges pour obtenir la même longueur de train de tiges.Of course, once said section 6 is manufactured and equipped with these connectors, it can be used for another drilling. The length of the rod train will be adapted to the length of said section. In general, the same rods will be used to obtain the same length of drill string.

Au-dessus dudit raccord 15 on assemble d'autres tiges pour suivre le déplacement de l'ensemble 3, lorsque l'on désire relier électriquement l'ensemble 3 à la surface, on effectue la connexion du second connecteur intermédiaire 9 sur le premier connecteur intermédiaire 8. La figure 2A illustre cette connexion qui se fait suivant les mêmes techniques que pour les connecteurs 4 et 5. Chaque fois qu'il faudra exécuter une opération rendue impossible compte tenu de la présence du câble coaxial 10, il suffira d'abord de désancrer le second connecteur intermédiaire 9, de remonter à la surface le câble 10 puis d'opérer. On peut ainsi notamment rajouter des tiges de manière conventionnelle pour appronfondir le forage, faire tourner l'ensemble de la garniture à partir d'un moyen de rotation de surface tel une table de rotation ou une tête d'injection motorisée.Above said connector 15 other rods are assembled to follow the movement of the assembly 3, when it is desired to electrically connect the assembly 3 to the surface, the second intermediate connector 9 is connected to the first connector intermediate 8. FIG. 2A illustrates this connection which is made using the same techniques as for connectors 4 and 5. Whenever it is necessary to execute an operation made impossible given the presence of the coaxial cable 10, it will suffice first to undock the second intermediate connector 9, to raise the cable 10 to the surface and then to operate. It is thus possible in particular to add rods in a conventional manner to deepen the borehole, to rotate the whole of the lining from a surface rotation means such as a rotation table or a motorized injection head.

Bien entendu, les déplacements peuvent se faire aussi bien à la descente qu'à la remontée du train de tiges.Of course, the movements can be made both on the descent and on the ascent of the drill string.

La figure 3 illustre une réalisation d'un système de raccord et de support 7 du premier connecteur intermédiaire 8. Le tronçon de câble 6 est fixé mécaniquement au connecteur 8 par une noix 32. Les conducteurs du câble 6 sont reliés au connecteur 8 par les conducteurs 31. Un raccord 15 comporte des moyens de fixation inférieur 16 et supérieur 17 audit train de tiges. Des bras de suspension 18 bloquent le déplacement axial vers le bas d'une chemise 19 par la coopération avec un épaulement 20 du raccord 15. Les bras 18 sont adaptés à laisser libre la circulation du fluide dans l'annulaire ainsi crée par l'extérieur de la chemise 19 et l'intérieur dudit raccord 15. Les bras sont solidarisés au raccord 15 par des moyens 30. Un moyen de verrouillage 21, par exemple constitué par au moins une vis cisaillable, solidarise le raccord 15 et la chemise 19 par l'intermédiaire des bras 18. Le premier connecteur intermédiaire 8 est solidaire de la chemise 19. Une traction appliquée sur la chemise et supérieure à la résistance au cisaillement de la vis 21, libère la chemise vers le haut en permettant la remontée de la chemise, du premier connecteur intermédiaire et du tronçon 6. Cet exemple n'est pas limitatif, on peut également équiper la chemise 19 de doigts de verrouillage télécommandés à partir de la surface comme moyen de verrouillage 21. Le second connecteur intermédiaire 9 connecté sur le premier est verrouillé par le moyen de doigts 22 solidaires de la chemise, lesdits doigts coopérant avec une pièce de retenue 23 solidaire du second connecteur intermédiaire. Cette pièce de retenue 23 peut libérer le second connecteur quand celle-ci est rompue ou être effaçable par télécommande à partir de la surface d'une motorisation située au-dessus du connecteur intermédiaire 9. L'extrémité supérieure de la chemise 19 comporte un dispositif 24 adapté à coopérer avec un outil de repêchage ou overshot (non représenté ici) descendu à l'intérieur du train de tige pour repêcher la chemise, son premier connecteur intermédiaire et l'ensemble du tronçon de câble 6. On peut également accrocher un overshot sur la chemise 19 par l'intermédiaire des doigts 22.FIG. 3 illustrates an embodiment of a connection and support system 7 of the first intermediate connector 8. The cable section 6 is mechanically fixed to the connector 8 by a nut 32. The conductors of the cable 6 are connected to the connector 8 by the conductors 31. A connector 15 includes lower 16 and upper 17 fixing means to said drill string. Suspension arms 18 block the axial downward movement of a jacket 19 by cooperation with a shoulder 20 of the connector 15. The arms 18 are adapted to allow free circulation of the fluid in the annular thus created by the outside of the jacket 19 and the inside of said fitting 15. The arms are secured to the fitting 15 by means 30. A means locking 21, for example constituted by at least one shearable screw, secures the connector 15 and the liner 19 by means of the arms 18. The first intermediate connector 8 is integral with the liner 19. A traction applied to the liner and higher to the shear strength of the screw 21, releases the jacket upwards allowing the jacket, the first intermediate connector and the section 6 to rise. This example is not limiting, the shirt 19 can also be fitted with fingers locking device remotely controlled from the surface as locking means 21. The second intermediate connector 9 connected to the first is locked by means of fingers 22 secured to the jacket, the Said fingers cooperating with a retaining part 23 secured to the second intermediate connector. This retaining piece 23 can release the second connector when it is broken or be erasable by remote control from the surface of a motorization located above the intermediate connector 9. The upper end of the jacket 19 includes a device 24 adapted to cooperate with a recovery tool or overshot (not shown here) lowered inside the rod train to recover the jacket, its first intermediate connector and the entire cable section 6. It is also possible to hang an overshot on the shirt 19 by means of the fingers 22.

On ne sortira pas du cadre de cette invention si le support 7 coopère directement avec le moyen de raccordement des tiges entre elles, tels les raccords mâle et femelle, sans ajout d'un raccord intermédiaire 15. Il suffit que les bras 18 soient adaptés à être solidarisé aux tiges lorsque les filetages male et femelle sont vissés entre eux.It will not go beyond the scope of this invention if the support 7 cooperates directly with the means for connecting the rods to each other, such as the male and female fittings, without adding an intermediate fitting 15. It suffices that the arms 18 are adapted to be secured to the rods when the male and female threads are screwed together.

Dans le deuxième cas, (figure 1A) la connexion entre les connecteurs intermédiaires se fait en surface et on descend dans l'intérieur du train de tiges le connecteur 5, le tronçon 6, le support 7 et son connecteur 8 connecté avec le connecteur 9, à l'aide du câble 10 et du treuil 11. La connexion des connecteurs 4 et 5 se fait comme décrit plus haut. On télécommande la solidarisation du support 7 sur le train de tiges à partir de la surface. La réalisation du support 7 est illustrée par les figures 4A et 4B.In the second case, (Figure 1A) the connection between the intermediate connectors is made on the surface and we descend into the interior of the drill string the connector 5, the section 6, the support 7 and its connector 8 connected with the connector 9 , using cable 10 and winch 11. The connection of connectors 4 and 5 is as described above. The fastening of the support 7 on the drill string from the surface is remote-controlled. The production of the support 7 is illustrated by FIGS. 4A and 4B.

Sur la figure 4A, le support 7 est représenté dans l'état où il est descendu dans la canalisation 2. Il comporte un premier connecteur 8 solidaire d'une chemise 19. La chemise 19 est identique à celle décrite sur la figure 3. La chemise 19 est solidaire d'un arbre 33 à l'extrémité duquel est fixé le tronçon de câble 6 par le moyen d'une noix 32. Des conducteurs 31 relient électriquement les conducteurs du tronçon de câble 6 au connecteur intermédiaire 8. Autour de l'arbre 33 est disposé un corps 34 comportant des patins de frictions 35 et des coins d'ancrage 36. Ce corps est en appui inférieur sur un épaulement 37 solidaire de l'arbre 33. Le corps 34 est verrouillé en position d'appui sur l'épaulement 37 par la coopération d'un doigts 39 d'un système de verrouillage 38 solidaire de l'arbre et d'un trou 43 du corps 34. Chaque coins d'ancrage 36 peut pivoter autour d'un axe 40 perpendiculaire à l'axe longitunal du support. Des ressorts (non représentés) maintiennent les coins refermés autour de l'arbre. Un moyen d'expansion 41 des coins d'ancrage est solidaire de l'arbre. Les patins de friction 35 sont poussés radialement par des ressorts 42. Ces ressorts 42 fournissent la force de contact nécessaire entre la canalisation et les patins pour avoir une friction longitudinale suffisante, de plus, ils permettent aux patins de se rétracter au passage des sections de diamètre réduit au niveau des raccordements des tubulaires.In FIG. 4A, the support 7 is shown in the state in which it is lowered into the pipe 2. It comprises a first connector 8 secured to a jacket 19. The jacket 19 is identical to that described in FIG. jacket 19 is integral with a shaft 33 at the end of which the cable section 6 is fixed by means of a nut 32. Conductors 31 electrically connect the conductors of the cable section 6 to the intermediate connector 8. Around the 'shaft 33 is disposed a body 34 comprising friction pads 35 and anchoring corners 36. This body is in lower support on a shoulder 37 secured to the shaft 33. The body 34 is locked in the support position on the shoulder 37 by the cooperation of a finger 39 of a locking system 38 secured to the shaft and a hole 43 of the body 34. Each anchoring corner 36 can pivot around an axis 40 perpendicular to the longitudinal axis of the support. Springs (not shown) keep the corners closed around the shaft. An expansion means 41 of the anchoring corners is integral with the shaft. The friction pads 35 are pushed radially by springs 42. These springs 42 provide the necessary contact force between the pipe and the pads to have sufficient longitudinal friction, in addition, they allow the pads to retract as the sections of reduced diameter at the tubular connections.

Le support 7 du tronçon 6 est connecté à la surface par le câble 10 équipé à son extrémité inférieure du second connecteur intermédiaire 9. Le verrouillage de ce connecteur 9 se fait par la coopération des doigts 22 et d'un pièce de retenue 23 solidaire du second connecteur 9.The support 7 of the section 6 is connected to the surface by the cable 10 fitted at its lower end with the second intermediate connector 9. The locking of this connector 9 is effected by the cooperation of the fingers 22 and of a retaining piece 23 secured to the second connector 9.

Le système de verrouillage 38 est commandé électriquement à partir de la surface par le moyen du câble 10 relié à l'arbre par les deux connecteurs. Il est avantageux que ce verrou soit réversible, c'est-à-dire que l'on puisse déverrouiller ou verrouiller par commande à distance notamment à partir du câble 10. Un tel verrou est connu et peut être réalisé notamment à l'aide d'une motorisation agissant sur le doigts 39. Mais dans cette invention, on pourra dans certains cas se contenter d'un système à déverrouillage par rupture du doigts 39, notamment par explosif. Dans une autre réalisation, les coins peuvent être solidaires de l'arbre, tandis que le moyen d'expansion est solidaire du corps.The locking system 38 is electrically controlled from the surface by means of the cable 10 connected to the shaft by the two connectors. It is advantageous that this lock is reversible, that is to say that one can unlock or lock by remote control in particular from the cable 10. Such a lock is known and can be achieved in particular using 'A motor acting on the fingers 39. But in this invention, we can in some cases be satisfied with an unlocking system by breaking the fingers 39, in particular by explosive. In another embodiment, the corners may be integral with the shaft, while the expansion means is integral with the body.

La figure 4B montre ledit support dans son état ancré dans la canalisation 2. Le système de verrou 38 a été commandé pour être déverrouillé puis au moyen du câble 10 on laisse coulisser l'arbre d'une distance H. Le coulissement relatif entre le corps et l'arbre est obtenu grâce aux patins de friction qui maintiennent sensiblement immobile le corps 34 par rapport à la canalisation et par l'action d'une force de déplacement de l'arbre vers le bas. Cette force peut être notamment fournie par le poids de l'arbre, le poids de lest solidaire du second connecteur 9, le poids du tronçon 6 et/ou la tension appliquée sur le tronçon 6 lorsque son extrémité est ancrée dans l'ensemble 3. Il faut noter que dans les puits inclinés ou l'ancrage de la sonde 25 ou du connecteur 5 sur l'ensemble 3 est en général indispensable, le support 7 suivant la réalisation de la figure 4A peut être ancré sans l'action prépondérante de la gravité. Il suffit de tendre le tronçon pour l'allonger d'une longueur supérieure à H, de déverrouiller ensuite le corps de l'arbre avant de relâcher la tension pour amener le support 7 dans l'état représenté sur la figure 4B.FIG. 4B shows said support in its state anchored in the pipe 2. The lock system 38 was ordered to be unlocked then by means of the cable 10 the shaft is allowed to slide by a distance H. The relative sliding between the body and the shaft is obtained by means of the friction pads which keep the body 34 relatively stationary relative to the pipe and by the action of a downward displacement force of the shaft. This force can be provided in particular by the weight of the shaft, the weight of ballast secured to the second connector 9, the weight of the section 6 and / or the tension applied to the section 6 when its end is anchored in the assembly 3. It should be noted that in the inclined wells or the anchoring of the probe 25 or of the connector 5 on the assembly 3 is generally essential, the support 7 according to the embodiment of FIG. 4A can be anchored without the preponderant action of the gravity. It is enough to tension the section to lengthen it by a length greater than H, then unlock the body of the shaft before releasing the tension to bring the support 7 into the state shown in FIG. 4B.

Dans l'état représentée sur la figure 4B, le déplacement relatif de la longueur H entre l'arbre et le corps fait coopérer les moyens d'expansion 41 et les coins d'ancrage. La forme conique des moyens d'expansion fait pivoter les coins autour des axes 40 jusqu'à ce que ceux-ci soient appliqués sur la paroi de la canalisation. La force de déplacement telle que décrit plus haut, maintient l'ancrage du support 7 dans la canalisation. La forme extérieure et l'angle de pivotement des coins permettent l'ancrage du support sur des sections de la canalisation de diamètres différents. En effet, les tubulaires utilisé, tiges de forages, casing, tubing, etc...présentent souvent des variations de diamètre intérieur notamment aux raccords. Le présent support peut être ancré à quelque niveau que ce soit dans une canalisation ayant des variations de diamètre interne.In the state shown in FIG. 4B, the relative displacement of the length H between the shaft and the body causes the expansion means 41 and the anchoring corners to cooperate. The conical shape of the expansion means pivots the corners around the axes 40 until these are applied to the wall of the pipe. The displacement force as described above maintains the anchoring of the support 7 in the pipeline. The external shape and the angle of pivoting of the corners allow the anchoring of the support on sections of the pipe of different diameters. In fact, the tubulars used, drill rods, casing, tubing, etc., often have variations in internal diameter, particularly at the fittings. The present support can be anchored at any level in a pipe having variations in internal diameter.

Pour remonter le câble 10 et son connecteur 9, il suffit de casser la pièce de retenue 23 ou de commander son effacement. Bien entendu dans le premier cas, il faut que la résistance à la rupture de la pièce 23 soit plus faible que la force de désancrage dudit support. Cette force étant au moins égale à celle dénommée plus haut comme force de déplacement.To reassemble the cable 10 and its connector 9, it suffices to break the retaining part 23 or to order its erasure. Of course in the first case, it is necessary that the breaking strength of the part 23 is lower than the disengagement force of said support. This force being at least equal to that referred to above as the displacement force.

La désolidarisation ou désancrage du support se fait en descendant à nouveau le câble 10 et son connecteur 9 équipé d'une pièce 23 de résistance à la rupture plus grande que la force d'ancrage. Cette résistance devant être aussi plus grande que la force nécessaire à désancrer le tronçon 6 de l'ensemble 3, dans le cas où celui-ci n'est pas télécommandé. Si la pièce de retenue est effaçable par télécommande, on s'évitera cette manoeuvre du câble 10.The separation or disengagement of the support is done by lowering again the cable 10 and its connector 9 equipped with a part 23 of resistance to rupture greater than the anchoring force. This resistance must also be greater than the force necessary to disengage the section 6 of the assembly 3, in the case where it is not not remote controlled. If the retaining part can be erased by remote control, this operation of the cable 10 will be avoided.

On ne sortira pas du cadre de cette invention si les support suivant les réalisations de la figure 3 et 4A comportent des moyens électroniques relevables avec les dits supports pour notamment amplifier ou aider à la transmission d'informations entre la sonde 25 ou l'ensemble 3 et la surface. Ces moyens électroniques peuvent se situer à l'extrémité supérieure dudit tronçon 6 ou à l'extrémité inférieure du câble 10.It will not depart from the scope of this invention if the supports according to the embodiments of FIG. 3 and 4A include electronic means which can be raised with the said supports in particular to amplify or help the transmission of information between the probe 25 or the assembly 3 and the surface. These electronic means can be located at the upper end of said section 6 or at the lower end of cable 10.

Que ce soit dans le cas du principe 1 ou 2, le support 7 est éventuellement adapté à pouvoir maintenir sensiblement tendu le tronçon 6, la connexion des connecteurs 4 et 5 étant verrouillée notamment suivant le même principe décrit figure 3 pour les connecteurs 8 et 9.Whether in the case of principle 1 or 2, the support 7 is possibly adapted to be able to keep section 6 substantially taut, the connection of connectors 4 and 5 being locked in particular according to the same principle described in FIG. 3 for connectors 8 and 9 .

Dans le cadre de cette invention, on a la possibilité de dégager entièrement l'intérieur du train de tiges de tous les éléments coaxiaux. En effet, que l'on utilise la réalisation de la figure 3 ou de la figure 4, par télécommande et/ou par traction sur le câble 10 on désolidarise le support 7 de l'intérieur du train de tiges, puis on déconnecte les connecteurs 4 et 5 avant de remonter tous les câbles par le moyen du treuil 11.In the context of this invention, there is the possibility of completely disengaging the interior of the drill string from all the coaxial elements. In fact, whether using the embodiment of FIG. 3 or of FIG. 4, by remote control and / or by pulling on the cable 10, the support 7 is separated from the inside of the drill string, then the connectors are disconnected. 4 and 5 before reassembling all the cables by means of the winch 11.

Egalement, il est possible de remonter le câble 10 et son connecteur 9 avant de descendre un outil de repêchage adapté à s'accrocher sur le dispositif 24 ou 22, ledit dispositif 24 équipant également la réalisation suivant la figure 4A ou 4B mais non représenté ici. La garniture de repêchage désancre le support 7 pour le remonter au jour avec le tronçon 6 après avoir déconnecté les connecteurs 4 et 5. L'utilisation d'une telle garniture de repêchage peut autoriser des efforts mécaniques, notamment de traction, plus importants. Avant de déconnecter les connecteurs 8 et 9, on a pu déverrouiller la connexion des connecteurs 4 et 5.Also, it is possible to reassemble the cable 10 and its connector 9 before lowering a recovery tool adapted to hang on the device 24 or 22, said device 24 also equipping the embodiment according to FIG. 4A or 4B but not shown here. . The repechage lining detaches the support 7 in order to bring it back up to date with the section 6 after having disconnected the connectors 4 and 5. The use of such a repechage lining can authorize greater mechanical forces, in particular traction. Before disconnecting connectors 8 and 9, we were able to unlock the connection of connectors 4 and 5.

Dans cette invention, il sera possible de remplacer la fonction de connexion et de liaison électrique fournit par le connecteur 9 et le câble 10, en utilisant des tiges câblées comme décrites dans le document FR-2607975. L'extrémité inférieure d'une première tige câblée est adaptée à se connecter électriquement sur le premier connecteur intermédiaire 8 et mécaniquement sur l'extrémité supérieure du train de tiges ou du filetage 17 du raccord 15, s'il existe. Pour poursuivre les opérations, il suffit de continuer d'assembler des tiges câblées. L'assemblage reliant à la fois mécaniquement et électriquement le train de tiges au fond. En surface, la dernière tige câblée est raccordée à une tête d'injection adaptée à relier les conducteurs de la tige à la cabine de contrôle 12 par l'intermédiaire d'un joint électrique rotatif ayant le même axe que la tige. Ladite tête d'injection peut surmonter un tige d'entraînement câblée ou être motorisée.In this invention, it will be possible to replace the electrical connection and connection function provided by the connector 9 and the cable 10, using wired rods as described in the document FR-2607975. The lower end of a first wired rod is adapted to connect electrically to the first intermediate connector 8 and mechanically to the upper end of the drill string or of the thread 17 of the connector 15, if there is one. To continue operations, simply continue to assemble wired rods. The assembly connecting both mechanically and electrically the drill string at the bottom. On the surface, the last wired rod is connected to an injection head adapted to connect the conductors of the rod to the control booth 12 by means of a rotary electrical joint having the same axis as the rod. Said injection head can overcome a wired drive rod or be motorized.

Cette dernière disposition permet de tourner l'ensemble du train de tige et de faire des ajouts, sans avoir à remonter une longueur de câble électrique.This last arrangement makes it possible to rotate the entire rod train and to make additions, without having to wind up a length of electric cable.

Bien entendu, cette solution peut être mixte avec l'utilisation du câble 10 notamment en utilisant au-dessus de tiges câblées un raccord d'adaptation comportant un connecteur intermédiaire similaire au premier connecteur intermédiaire 8. La liaison s'effectue sur ce connecteur selon la présente invention. Les tiges câblées connues laissent libre le passage intérieur, il sera donc possible de remonter ledit tronçon à travers ces tiges en utilisant un outil de repêchage et un support 7 adapté.Of course, this solution can be mixed with the use of the cable 10 in particular by using above the wired rods an adapter fitting comprising an intermediate connector similar to the first intermediate connector 8. The connection is made on this connector according to the present invention. The known wired rods leave the interior passage free, it will therefore be possible to reassemble said section through these rods using a recovery tool and a suitable support 7.

La descente de la sonde 25 se fait de manière identique au connecteur 5, c'est-à-dire par gravité ou par pompage.The descent of the probe 25 takes place in an identical manner to the connector 5, that is to say by gravity or by pumping.

Bien entendu, la sonde 25 est adaptée à passée à travers le canal du train de tiges, éventuellement des tiges câblées et du raccord 15 s'il existe.Of course, the probe 25 is adapted to pass through the channel of the drill string, possibly of the wired rods and of the connector 15 if it exists.

La sonde 25 peut comporter un système de coulisse et barre de charge facilitant le réglage en longueur du tronçon de câble 6.The probe 25 may include a slide system and load bar facilitating the length adjustment of the cable section 6.

Le câble 10 peut passer à travers un raccord à fenêtre latérale et remonter à la surface par l'annulaire puits-train de tiges. Cette utilisation est intéressante dans le cas où les opérations ne nécessitent pas ou plus de rotation éventuelle de l'ensemble du train de tiges. Avantageusement, on utilisera un raccord à fenêtre latérale en deux parties ne nécessitant pas un enfilage d'une extrémité du câble à travers la fenêtre.Cable 10 can pass through a fitting with a side window and rise to the surface by the annular well-drill string. This use is advantageous in the case where the operations do not require or more possible rotation of the entire drill string. Advantageously, a two-part side window connection will be used which does not require threading of one end of the cable through the window.

Dans une variante avantageuse de l'invention, l'ensemble 3 comporte des moyens de mesure et/ou d'intervention non reliés électriquement par la liaison électrique fournit par le tronçon 6 et le câble 10. Ces moyens peuvent notamment comporter des moyens de transmission par ondes de pression ou électromagnétiques.In an advantageous variant of the invention, the assembly 3 comprises measurement and / or intervention means which are not electrically connected by the electrical connection provided by the section 6 and the cable 10. These means may in particular comprise transmission means by pressure or electromagnetic waves.

Dans une autre variante, qui n'exclut pas la précédente, des moyens de mesure et/ou intervention sont reliés électriquement à un premier connecteur 4 solidaire dudit ensemble et dans ce cas la sonde 25 comportera également à son extrémité un second connecteur 5 adapté à se connecter avec le premier.In another variant, which does not exclude the previous one, measurement and / or intervention means are electrically connected to a first connector 4 secured to said assembly and in this case the probe 25 will also include at its end a second connector 5 suitable for connect with the first.

Bien entendu, on ne sortira pas du cadre de cette invention si la liaison électrique est constituée par plusieurs tronçons identiques à celui référencé 6 décrit plus haut. En effet, l'ensemble du dispositif et de la méthode d'utilisation sont équivalents, qu'il y ait un ou plusieurs tronçons.Of course, it will not depart from the scope of this invention if the electrical connection is constituted by several sections identical to that referenced 6 described above. Indeed, the whole device and the method of use are equivalent, whether there is one or more sections.

Claims (14)

  1. System for carrying out measuring and/or servicing operations in a well bore (1) or during drilling having in combination:
    - a drill string extending into the said well bore,
    - an assembly (3) fastened to the end of the drill string (2) and having a connecting sub (26),
    - a sonde (25) having measuring and/or servicing means, the said sonde being located in the interior space of the said drill string and linked to the said assembly be means of the said connecting sub
    - a section of cable (6) of a given length having electric conductors, one end of which is joined to the sonde and the other end of which is joined to a support (7), the distance between the said support and the said sonde being determined by the said given length of the cable section,
    - a support (7) that is displaceable in the direction of the surface and the bottom in at least one portion of the interior space of the string, the said support having means for the fixing thereof with the drill string (2), the said fixing means being remotely controlled from the surface,
    - a first intermediate electric connector (8) integral with the said support,
    - a second intermediate electric connector (9) having means to co-operate with the first intermediate connector (8) in the interior space of the drill string,
    - a cable (10) having electric conductors electrically linked on one side to the surface and on the other to the second intermediate connector mechanically fastened to the end of the cable, the said cable being displaceable in at least one portion of the drill string.
  2. System as claimed in claim 1, characterised in that the said connecting sub (26) has means for locking the said sonde (25).
  3. System as claimed in one of the previous claims, characterised in that the said support (7) anchored on any zone of the interior channel of the drill string maintains the cable section (6) essentially taut.
  4. System as claimed in one of the previous claims, characterised in that the said support has means on its upper end (24) for recovering the cable.
  5. System as claimed in one of the previous claims, characterised in that the drill string has a special side-entry sub through which the cable is run.
  6. System as claimed in one of the previous claims, characterised in that the said connecting sub has a system of angular orientation for the sonde.
  7. System as claimed in one of the previous claims, characterised in that the assembly (3) has means for directional drilling and means for controlling the position of the said drilling means from the surface.
  8. System as claimed in one of the previous claims, characterised in that the said assembly has other measuring and/or servicing means electrically linked to a first connector (4) integral with the said assembly and in that the said sonde has a second connector (5) designed to couple with the first connector.
  9. System as claimed in one of the previous claims, characterised in that at least either the second intermediate connector or the sonde has a weighting means, such as load bars, and/or a device for pumping into the drill string channel.
  10. System as claimed in one of the previous claims, characterised in that the said support has a shaft (33) joined on one side to the first electrical connector (8) and on the other to a section of cable (6) having electric conductors, a body (34) coaxial with the said shaft, the said body being capable of displacement in translation between two end positions relative to the said shaft, in that in a first position the support is locked, in that in the second position, the support is released for displacement and in that a locking system (38) joins the said body to the said shaft in the second position.
  11. System as claimed in claim 10, characterised in that the said locking system is electrically remotely controlled and in that the said locking system is reversible.
  12. System as claimed in one of claims 10 or 11, characterised in that the said body has friction pads (35).
  13. System as claimed in one of claims 10 to 12, characterised in that the said support has anchoring wedges (36) that are in the rest position when the said body is in the second position, in that the said wedges are designed to anchor the support in the interior space of the drill string by co-operating with extension means (41) when the said body is in the first position, and in that if the extension means are integral with the shaft, the wedges are integral with the body or vice versa.
  14. Use of the system as claimed in one of the previous claims to record periodic measuring and/or servicing operations in an oil well, providing the possibility of adding pipes and/or rotating the drill string assembly and the said assembly between each measuring and/or servicing operation.
EP92401993A 1991-08-02 1992-07-09 System for carrying out measurements or interventions in a drilled well or while drilling Expired - Lifetime EP0526294B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9109916 1991-08-02
FR9109916A FR2679958B1 (en) 1991-08-02 1991-08-02 SYSTEM, SUPPORT FOR PERFORMING MEASUREMENTS OR INTERVENTIONS IN A WELLBORE OR DURING DRILLING, AND USES THEREOF.

Publications (2)

Publication Number Publication Date
EP0526294A1 EP0526294A1 (en) 1993-02-03
EP0526294B1 true EP0526294B1 (en) 1996-03-06

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Application Number Title Priority Date Filing Date
EP92401993A Expired - Lifetime EP0526294B1 (en) 1991-08-02 1992-07-09 System for carrying out measurements or interventions in a drilled well or while drilling

Country Status (5)

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US (1) US5353872A (en)
EP (1) EP0526294B1 (en)
CA (1) CA2075076A1 (en)
FR (1) FR2679958B1 (en)
NO (1) NO923035L (en)

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Also Published As

Publication number Publication date
NO923035L (en) 1993-02-03
NO923035D0 (en) 1992-07-31
US5353872A (en) 1994-10-11
EP0526294A1 (en) 1993-02-03
FR2679958B1 (en) 1997-06-27
FR2679958A1 (en) 1993-02-05
CA2075076A1 (en) 1993-02-03

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