[go: up one dir, main page]

EP0874947B1 - Kernbohrverfahren und kernbohrwerkzeug zur durchführung des verfahrens - Google Patents

Kernbohrverfahren und kernbohrwerkzeug zur durchführung des verfahrens Download PDF

Info

Publication number
EP0874947B1
EP0874947B1 EP97900512A EP97900512A EP0874947B1 EP 0874947 B1 EP0874947 B1 EP 0874947B1 EP 97900512 A EP97900512 A EP 97900512A EP 97900512 A EP97900512 A EP 97900512A EP 0874947 B1 EP0874947 B1 EP 0874947B1
Authority
EP
European Patent Office
Prior art keywords
piston
core
fluid
internal space
inner barrel
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
EP97900512A
Other languages
English (en)
French (fr)
Other versions
EP0874947A1 (de
Inventor
Philippe Fanuel
Rune Holt
Cor Kenter
Marco Brignoli
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.)
Halliburton Energy Services Inc
Original Assignee
Halliburton Energy Services Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Halliburton Energy Services Inc filed Critical Halliburton Energy Services Inc
Publication of EP0874947A1 publication Critical patent/EP0874947A1/de
Application granted granted Critical
Publication of EP0874947B1 publication Critical patent/EP0874947B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
    • E21B25/08—Coating, freezing, consolidating cores; Recovering uncontaminated cores or cores at formation pressure
    • 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
    • E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors

Definitions

  • the present invention relates to a coring process, in particular in the field oil tanker, comprising a coring proper in the by means of a core barrel comprising at least one inner tube, an outer tube and a crown.
  • the object of the present invention is to solve this problem and to provide a coring process which preserves carrots obtained in these formations from characteristics as close as possible to those formations in the state they were in before coring.
  • the coring process of the invention includes the features of claim 1.
  • the above corer includes the features of claim 5.
  • Figure 1 shows schematically in longitudinal section, broken, one end anterior of a core barrel, according to an embodiment of the invention, during coring.
  • Figure 2 shows schematically, in longitudinal section, broken, one end anterior of another embodiment of the core barrel of the invention, in a position ready for coring.
  • Figure 3 shows schematically in longitudinal section, with broken edges, the core barrel of the figure 1 or 2 at the place of the tube connection inside and outside.
  • Figure 4 shows schematically in longitudinal section, broken, anterior end of another embodiment of the invention, in a position ready for coring.
  • Figure 5 shows schematically in longitudinal section, with broken edges, the core barrel of the Figure 4 at the location of the inner tube connection and exterior, according to one embodiment.
  • Figure 6 shows schematically in longitudinal section, with broken edges, the core barrel of the Figure 4 at the location of the inner tube connection and exterior, according to another embodiment.
  • the core barrel 1 according to the invention and illustrated as an example in the drawings is intended coring, for example in the field of prospecting petroleum or natural gas.
  • the aforementioned core barrel 1 further includes elastically compressible means 13, arranged in connection with the internal space 6 so to be able to accumulate and restore energy from, pressurization of the introduced fluid. This bet under pressure can result from at least one compression of this fluid by the action of the piston 8 pushed into the internal space 6 as the core 7 enters it.
  • elastically compressible means 13 could be constituted for example by a chamber (not shown) filled with a compressible gas.
  • the core barrel 1 comprises further means 14 for adjusting a fluid leak introduced.
  • These adjustment means 14 are arranged so that fluid introduced into the internal space 6 can escape as the carrot 7 grows there piston 8 and so that depending on the leak regulated for example by an orifice of reduced section, the pressure of the fluid introduced into the internal space 6 increases to a value corresponding to a force of substantially axial compression F applied by the piston 8 on the top 7A of the core 7, this force F being between selected limits notably in depending on the material of the carrot 7.
  • the elastically compressible means 13 preferably include, on the opposite side 15 of the piston 8 compared to core 7 (during core drilling), a auxiliary piston 16 and, between it and piston 8, a compressible elastic element 17 which is advantageously a compression spring 17.
  • the auxiliary piston 16 is arranged to slide in space internal 6 and preferably present at least one seal annular 18 for its tightness with respect to the wall of the inner tube 5.
  • a face 19 of the auxiliary piston 16, facing towards the bottom 10 is intended to receive the above pressure and is sized to provide the minus part of the force F applied to the vertex 7A of the carrot 7. If necessary, the additional part of force F can come from a face 20 of the piston 8 facing the bottom 10 of the inner tube 5.
  • the piston 8 may have, on the bottom side 10, a rod 23 coaxial with the inner tube 5 and the auxiliary piston 16 may have an annular shape and be slidably mounted on the coaxial rod 23. This may include stop means 24 located at the distance from the piston 8 and determining an extreme position remote from the auxiliary piston 16 relative to the piston 8. At least one annular seal 25 can be arranged between the auxiliary piston 16 and the coaxial rod 23 to prevent fluid from escaping internal space control 6.
  • the spring 17 can be mounted around the coaxial rod 23 as shown Figures 1, 2 and 4.
  • the piston 8 may include the means for leakage setting 14 and channels 27 associated therewith and arranged to link the internal space 6, for the fluid, with the top 7A of the carrot and, at from there, with an annular gap 28 between the carrot 7 being formed (figure 1) and the tube interior 5 by means of these adjustment means leak 14.
  • the leakage adjustment means 14 of the Figure 1 include a ball 29 pressed against a seat valve 30 by a compression spring 31 whose force on ball 29 can be adjusted by a set of screw and nut 32, so as to obtain pressure desired in the internal space 6 before a leak of fluid takes place, and therefore a compressive force desired on vertex 7A.
  • a cap 33 protects the adjustment assembly 32.
  • the leakage adjustment means 14 of the Figure 2 have a calibrated or adjustable spring 31 by the use of thicknesses 34.
  • the channels 27 consist of an axial duct 27A upstream of the ball 29 with respect to the direction of exit of the fluid to the opening of the ball 29 and, downstream thereof, of a or of radial conduits 27B opening into a conduit annular 27C which is connected to one or more conduits radials 27D opening to the outside of the piston 8.
  • the piston 8 can be made so that coring start position (figure 2), it presents a portion 38 which protrudes from the crown 3. This portion 38 has the front end 39 of the piston 8 intended to cooperate with the top 7A of the carrot. At the location of this end 39 it can be provided in the piston 8, for the means for introducing fluid in the interior space 6, a filling orifice 40 provided for example with a ball and a spring non-return valve 41, a pipe 42 connected to the orifice of filling 40 and passing through the piston 8 in the form a radial pipe 42A, an annular pipe 42B, one or more longitudinal pipes 42C and one or more radial lines 42D opening for example in the axial duct 27A and, at through the rod 23, in the internal space 6.
  • a filling orifice 40 provided for example with a ball and a spring non-return valve 41
  • a pipe 42 connected to the orifice of filling 40 and passing through the piston 8 in the form a radial pipe 42A, an annular pipe 42B
  • a screw 43 can be used to plug the filling port 40 so to protect it.
  • a radial position (figure 2) of this orifice 40 is favorable for example because then a filling means (not shown), used for inject fluid into at least part of the space internal 6, screwed on the orifice 40 does not tend to turn the piston 8 in the internal space during this screwing.
  • the fluid introduced into the internal space 6 ( Figures 1 to 3) before coring may be different who can be sent during the coring, to from a surface tank (not shown), at through the usual nozzles 44 of the crown 3 by through a longitudinal pipe 45 annular formed between the inner tube 5 and the tube exterior 2.
  • the fluid thus injected into space internal 6 can be chosen for example for its properties carrot protection and / or lubrication 7 in progress and penetration in this internal space 6.
  • the core barrel 1 of the invention can also include (Figure 3), on the bottom side 10 of the inner tube 5 or internal space 6, a safety valve 46 arranged for example so as to open for bleed air from internal space 6 to time of filling it or to limit to a maximum pressure chosen that prevails during the filling or during coring or also after this one.
  • the embodiment of Figure 3 is such that during filling, only the strength of a valve spring holds it against its seat while during coring, the fluid pressure core drilling sent via the longitudinal pipe 45 adds, by its action on the valve 46, a force important to that of the spring.
  • the valve security 46 When the valve security 46 is open, it connects the internal space 6 and a space or pipe 45 between the outer 2 and inner 5 tubes.
  • Figure 3 also shows means of link 47 arranged so that the inner tube 5 is carried coaxially by the outer tube 2 and can rotate independently of it around their axis longitudinal 48 joint.
  • the connecting means 47 are also arranged to guide towards the pipeline longitudinal 45 the coring fluid from the tank located on the ground surface.
  • the coring method of the invention can now be explained using the core barrel 1 of the invention which comprises at least the inner tube 5, the outer tube 2 and the crown 3.
  • the method of the invention comprises in in addition, during at least most of the core drilling, application of a compressive force F substantially axial on the top 7A of the carrot being training.
  • This compressive force F is included between limits chosen in particular according to the core material 7.
  • This compressive force F is preferably deleted after completing the coring and at the latest just before taking out the core 7 of the inner tube 5.
  • the compression force F is produced by installing in the internal space 6 of the inner tube 5 the piston 8 of which a face 8A can be placed on the top 7A of the carrot 7, preferably by means of an element 49 by elastic example, absorbing irregularities of apex surface 7A.
  • the fluid thus introduced into the internal space 6 is practically under pressure from the environment of the crown 3 (outside and in the coring hole).
  • the piston 8 As the core 7 enters the inner tube 5, it pushes the piston 8 which consequently compresses the fluid at a pressure within a pressure range chosen, determined for example by a calibrated leak fluid through the leakage adjusting means 14.
  • the fluid compressed in the internal space 6 acts on the face 19 of the auxiliary piston 16 and slides this one along the rod 23 and compresses by this movement spring 17 to accumulate energy and to push the piston 8 against the core 7 at the same time.
  • the fluid pressure can also act on a part from the face 20 of the rod 23 so as to help push the piston 8 against the carrot 7.
  • the one included in the hollow of the rod 23 repels ball 29, from a pressure threshold (calibrated leak 14) and can flow through channels 27 in longitudinal grooves 52 around the periphery of the piston 8. From there, the fluid can partly go back along the spring 17 and, for the most part, be pushed to the top 7A of carrot 7 and into interstice 28 and beyond it, so that coat and / or lubricate the carrot 7 as it is made and that it enters the inner tube 5. Excess fluid from the internal space 6 can mix with the fluid leaving the nozzles 44 and be evacuated through the latter.
  • Figures 4 to 6 show another form for making the core barrel 1 of the invention.
  • a tube median 53 possibly in several sections, is arranged coaxially between the outer tubes 2 and interior 5.
  • a first annular longitudinal channel 54 is then formed by a space between the outer tubes 2 and median 53 and it connects for coring the nozzles 44 of the crown 3 and a conduit 55 for coring fluid supply from the tank above ground.
  • a second longitudinal channel annular 56 is formed by a space between the median tubes 53 and interior 5 and is in communication for fluid, for example through splines 57, on the one hand with the bottom 10 of the tube interior 5 and, on the other hand, (at the anterior end 4) with the circumference of the carrot 7 near the exit 57A splines 57.
  • FIGS. 4 to 6 presents, compared to that of the previous figures, the advantage that the coring fluid which must escape from internal space 6 cannot be prevented by obstruction of the annular space 28 between the core 7 and the inner tube 5 unlike what might be the case in the embodiment of Figure 1.
  • the leakage adjusting means 14 are arranged in said communication for the fluid between the bottom 10 and the second longitudinal channel 56.
  • the piston 8 can consequence be simplified and include only the means for introducing fluid 9.
  • the leakage adjusting means 14 can also be used as a safety valve 46 with leak through the same longitudinal channel 56.
  • the embodiment of Figure 6 differs from that of figure 5 by the fact that the safety valve 46 is separated from the adjusting means leakage 14.
  • the channels 27 are also in communication with a room 58 and, from there, through the valve safety 46 (thus located downstream of the adjustment means leak 14 for fluid leaving the internal space 6), with one or more radial conduits 59 in communication for the fluid with the longitudinal channel 54.
  • an obstruction prevents the fluid from leaving the second longitudinal channel 56 at the anterior end 4, this one can escape, by the safety valve 46, by the first longitudinal channel 54 and by the nozzles 44, with the coring fluid from the supply pipe 55.
  • a pressure relief means 60 towards the open air for example in the form of a needle screw 60, arranged so that it can be actuated by an operator when the inner tube 5 (FIG. 3) or, if necessary, this and the middle tube 53 fixed one to the other (as shown then in the figure 6) is or respectively are at least partially removed of the outer tube 2, after coring, so take out the finished core 7. So a pressure residual fluid blocked in the internal space 6 between the carrot 7, the bottom 10 and the pressed ball 29 by spring 31 can be removed using this medium 60 before releasing and removing the carrot 7 from internal space.
  • another needle screw 61 is provided to eliminate a prevailing fluid pressure, before removing from inner tube 5 the core 7, in the chamber 58, the conduits 27 and the second longitudinal channel 56 at the following a blockage thereof.
  • the skilled person is able to calculate, according to their interactions, the springs to use and depending on operating pressures reigning in a core hole and in the coring sent from the ground, the pressures to be produced in the core barrel 1 of the invention.
  • the corer 1 of the invention can be fitted with a blocking system 62 with a frustoconical ring split, known in the art and schematically in the Figures 1, 2 and 4.
  • conduits, channels, conduits, pipes, grooves, grooves, etc. aforementioned may have different forms of those given above by way of example.

Landscapes

  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Earth Drilling (AREA)
  • Measurement Of Radiation (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Claims (13)

  1. Kernbohrverfahren unter Verwendung eines Kembohrgeräts, umfassend mindestens eine innere Röhre (5), eine äußere Röhre (2), eine Bohrkrone (3), ein in der inneren Röhre (5) vorgesehenes und insbesondere auf die Spitze (7a) eines sich bildenden Bohrkems (7) Druck ausübendes Fluidum, sowie ein in der inneren Röhre (5) vorgesehener Kolben (8),
    dadurch gekennzeichnet, dass es eine Ausübung dieses Druckes auf die Spitze (7a) beinhaltet unter Zwischenschaltung des Kolbens (8), der sich koaxial und dicht in der inneren Röhre (5) bewegen kann unter der Wirkung des Fluidums, um auf der Spitze (7a) zur Anlage zu kommen und auf diese eine Kompressionskraft (F) auszuüben, zumindest während der Dauer des Kernbohrens, wobei der Druck des Fluidums insbesondere in Abhängigkeit des Materials, in dem der Bohrkem erzeugt wird, ausgewählt wird.
  2. Kernbohrverfahren nach Anspruch 1, dadurch gekennzeichnet, dass man
    auf dem Kolben (8) einen Energiestau aufbaut, der aus dem Druck des Fluidums stammt, und dann,
    wenn der Druck des Fluidums sich vermindert, eine Wiedergabe der angestauten Energie bewerkstelligt wird in Form einer zumindest teilweisen Aufrechterhaltung der Kompressionskraft ((F) auf der Spitze (7A) des Bornkems (7).
  3. Kernbohrverfahren nach Anspruch 2, dadurch gekennzeichnet, dass:
    zu Beginn des Kembohrens das Fluidum, das in die innere Röhre (5) eingeführt wird, praktisch den Druck der Umgebung des Bohrkerns (3) aufweist, und
    soweit der Bohrkern (7) in die innere Röhre (5) eintritt, dieser den Kolben (8) verschiebt, der dadurch das Fluidum auf einen Druck in einem Bereich komprimiert, der bestimmt wird durch eine kalibrierte Öffnung (14) für das Fluidum (7).
  4. Kernbohrverfahren nach Anspruch 3, dadurch gekennzeichnet, dass mindestens ein Teil des Fluidums, das durch die kalibrierte Öffnung (14) entweicht, um den Bohrkem (7) geführt wird, um diesen während seiner Eintrittsbewegung in die innere Röhre (5) zu umgeben und/oder zu schmieren.
  5. Kernbohrgerät, insbesondere für das Gebiet der Erdölförderung, umfassend:
    eine äußere Röhre (2),
    eine Kernbohrkrone (3), die von einem Ende der äußeren Röhre (2) gehalten wird, um die Krone (3) in Rotation zu versetzen, wobei sich dieses Ende im Hinblick auf die Vortriebsrichtung des Kernbohrgeräts (1) während eines Kernbohrens im vorderen Bereich befindet,
    eine innere Röhre (5), die sich in der äußeren Röhre (2) befindet und einen Innenraum (6) aufweist, um dort einen Bohrkem (7) aufzunehmen,
    einen Kolben (8), der im Innenraum (6) vorgesehen ist, um dort verschoben zu werden, und um auf dem Boden eines Kernbohrloches bzw. auf der Spitze (7A) des sich bildenden und in die innere Röhre (5) eintretenden Bohrkems (7) zur Anlage zu kommen , und
    Mittel (9) zum Einleiten eines Fluidums in den Innenraum (6) zwischen dem Kolben (8) und einem Boden (10) der Innenröhre (5), die sich an deren hinteren Enden befinden,
    dadurch gekennzeichnet, dass sie ferner umfasst:
    zu dem Kolben (8) eine Fläche (20), die gegen den Boden (10) der inneren Röhre (5) gewand ist und dem Druck des Fluidums unterworfen wird, eine gegenüberliegende Fläche (8A), die dazu bestimmt ist, am Boden des Kernbohrloches und auf der Spitze (7A) zur Anlage zu kommen, sowie eine Dichtung um den Kolben (8) zwischen diesen beiden Flächen,
    elastisch verformbare Mittel (13), die in Verbindung mit dem Innenraum (6) vorgesehen sind, um eine Energie, die von einem Unterdrucksetzen des eingeführten Fluidums stammt, anzustauen und wiederzugeben zumindest im Anschluss an eine Kompression des letzeren durch den Kolben (8), der durch den Bohrkem (7) in den Innenraum (6) geschoben wird, und
    Steuerungsmittel (14) einer Öffnung für das eingeführte Fluidum, die derart vorgesehen sind, dass das in den Innenraum (6) eingeführte Fluidum daraus entweichen kann soweit der Bohrkern (7) dort den Kolben (8) verschiebt, und derart, dass in Abhängigkeit der gesteuerten Öffnung der Druck des eingeführten Fluidums in dem Innenraum (6) bis zu einem Wert steigt, der einer axialen Kompressionskraft (F) entspricht, die ausgeübt wird durch den Kolben (8) auf die Spitze (7A) des Bohrkems (7) und in einem Bereich liegt, der in Abhängigkeit vom Material des Bohrkems (7) gewählt wird.
  6. Kernbohrgerät nach Anspruch 5, dadurch gekennzeichnet, dass:
    die elastisch verformbaren Mittel (13) auf der im Hinblick auf den Bohrkern (7) dem Koiben (8) gegenüberliegenden Seite (15), einen Hilfskolben (16) umfassen, der zur Verschiebung im Innenraum (6) vorgesehen ist, sowie ein elastisch verformbares Element (17), vorzugsweise eine Feder (17), die zwischen dem Kolben (8) und dem Hilfskolben (17) angeordnet ist, und
    der Hilfskolben (16) auf der Seite, die dem Kolben gegenüberliegt, eine Fläche (19) aufweist, die dazu bestimmt ist, den vorgenannten Druck aufzunehmen und die dimensioniert ist um mindestens einen Teil der oben genannten Kraft (F) aufzunehmen, wobei gegebenenfalls der komplementäre Teil dieser Kraft (F) von einer Fläche (20) des Kolbens (8) stammt, die in Richtung des Bodens (10) der inneren Röhre gerichtet ist.
  7. Kernbohrgerät nach Anspruch 6, dadurch gekennzeichnet, dass :
    der Kolben (8) auf der Seite des Bodens (10) der inneren Röhre (5) einen Stift (23) umfaßt, der mit dieser koaxial verläuft und
    der Hilfskolben (16) kreisförmig ist und derart montiert wird, um auf dem koaxialen Stift (23) in Richtung des Kolbens (8), aus einer Position verschoben zu werden, die beabstandet von dem Kolben (8) liegt und bestimmt wird von Arretiermitteln (24), die vom Kolben (8) beabstandet auf dem koaxialen Stift (23) vorliegen, und in Richtung der letzteren.
  8. Kernbohrgerät nach irgendeinem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass der Kolben (8) Steuermittel der Öffnung (14) umfaßt, sowie Kanäle (27), die diesen zugeordnet sind und vorgesehen werden um den Innenraum (6) mit der Spitze (7A) des Bohrkerns (7) zu verbinden und von dort mit einem kreisförmigen Zwischenraum (28) zwischen dem sich bildenden Bohrkern (7) und der inneren Röhre (5) unter Zwischenschaltung der Steuermittel für die Öffnung (14).
  9. Kernbohrgerät nach irgendeinem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass es umfaßt
    eine mittlere Röhre (53), die koaxial zwischen der äußeren Röhre (2) und der inneren Röhre (5) angeordnet ist,
    ein erster ringförmiger Längskanal (54), der gebildet wird durch einen Raum zwischen der äußeren Röhre (2) und der mittleren Röhre (53) und der die Zugänge (44) des Bohrkerns (3) verbindet sowie ein Kernbohrfluidumzulaufkanal (55) von einem Behälter auf der Bodenoberfläche,
    ein zweiter ringförmiger Längskanal (56), der gebildet wird durch einen Raum zwischen der mittleren Röhre (53) und der inneren Röhre (5) und der für das Fluidum in Verbindung steht einerseits mit dem Böden (10) der inneren Röhre (5) und andererseits mit dem äußeren Umfang des Bohrkerns (7) in der Krone (3) und gegebenenfalls von dort aus mit einem ringförmigen Raum (28) zwischen dem Bohrkem (7) und der inneren Röhre (5) und dadurch, dass
    mindestens die vorgenannten Steuermittel der Öffnung (14) vorgesehen sind in der Verbindung des Fluidums zwischen dem Boden (10) der inneren Röhre (5) und dem zweiten Längskanal (56).
  10. Kernbohrgerät nach irgendeinem der Ansprüche 5 bis 9, dadurch gekennzeichnet, dass der Kolben (8) an der Stelle seines Endes (39), das zur Zusammenwirkung mit der Spitze (7A) des Bohrkerns (7) bestimmt ist, eine Auffüllöffnung (40) umfaßt und, daran angepaßt, einen Gang (42) durch den Kolben (8), um durch die Öffnung (40) und den Gang (42), ein Fluidum zumindest in einen Teil des Innenraums (6) vor einer Kernbohrung einspritzen zu können, wenn der Kolben (8) sich praktisch an der Stelle des vorderen Endes (4) des Innenraums (6) befindet.
  11. Kernbohrgerät nach irgendeinem der Ansprüche 5 bis 10, dadurch gekennzeichnet, dass das Fluidum, das in den Innenraum (6) eingeführt wird, verschieden ist vom eigentlichen Kernbohrfluidum.
  12. Kernbohrgerät nach irgendeinem der Ansprüche 5 bis 11, dadurch gekennzeichnet, dass es auf dem Boden des Innenraums (6), ein Sicherheitsventil (46) umfaßt, das vorgesehen ist, um sich zu öffnen, um Luft aus dem Innenraum (6) bei einer Auffüllung des letzeren abzulassen und/oder sich bei einem gewählten Maximaldruck in diesem Innenraum (6) zu öffnen und dass, wenn es offen ist, eine Verbindung schafft zwischen dem Innenraum (6) und einem ringförmigen Raum für das Fluidum zwischen der äußeren Röhre (2) und der inneren Röhre (5), und gegebenenfalls zwischen der äußeren Röhre (2) und der mittleren Röhre (53), gegebenenfalls unter Zwischenschaltung der Steuermittel für den Auslass (14).
  13. Kernbohrgerät nach irgendeinem der Ansprüche 5 bis 12, dadurch gekennzeichnet, dass es, in Verbindung mit dem Boden (10) des Innenraums (6), ein Druckablaßmittel (60) zur freien Luft umfaßt, das vorgesehen wird, um in Aktion zu treten, wenn die innere Röhre (5) oder gegebenenfalls die innere Röhre (5) und die mittlere Röhre (53), die ineinander befestigt sind zumindest teilweise aus der äußeren Röhre (2) nach einem Kernbohren herausgezogen wird/werden.
EP97900512A 1996-01-15 1997-01-15 Kernbohrverfahren und kernbohrwerkzeug zur durchführung des verfahrens Expired - Lifetime EP0874947B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
BE9600033A BE1009968A5 (fr) 1996-01-15 1996-01-15 Procede de carottage et carottier pour sa mise en oeuvre.
BE9600033 1996-01-15
PCT/BE1997/000005 WO1997026439A1 (fr) 1996-01-15 1997-01-15 Procede de carottage et carottier pour sa mise en oeuvre

Publications (2)

Publication Number Publication Date
EP0874947A1 EP0874947A1 (de) 1998-11-04
EP0874947B1 true EP0874947B1 (de) 2003-08-20

Family

ID=3889471

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97900512A Expired - Lifetime EP0874947B1 (de) 1996-01-15 1997-01-15 Kernbohrverfahren und kernbohrwerkzeug zur durchführung des verfahrens

Country Status (7)

Country Link
US (1) US6164389A (de)
EP (1) EP0874947B1 (de)
BE (1) BE1009968A5 (de)
CA (1) CA2242922C (de)
DE (1) DE69724230T2 (de)
NO (1) NO316131B1 (de)
WO (1) WO1997026439A1 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6216804B1 (en) * 1998-07-29 2001-04-17 James T. Aumann Apparatus for recovering core samples under pressure
US6412575B1 (en) 2000-03-09 2002-07-02 Schlumberger Technology Corporation Coring bit and method for obtaining a material core sample
US6719070B1 (en) * 2000-11-14 2004-04-13 Baker Hughes Incorporated Apparatus and methods for sponge coring
JP3434800B2 (ja) * 2001-01-31 2003-08-11 海洋科学技術センター 地殻コア試料の採取方法、並びにこれに用いる抗菌性高分子ゲルおよびゲル材料
JP4037658B2 (ja) * 2002-02-12 2008-01-23 独立行政法人海洋研究開発機構 地殻コア試料の採取方法、並びにこれに用いる抗菌性高分子ゲルおよびゲル材料
US7055626B2 (en) * 2002-03-15 2006-06-06 Baker Hughes Incorporated Core bit having features for controlling flow split
US7913775B2 (en) * 2007-12-27 2011-03-29 Schlumberger Technology Corporation Subsurface formation core acquisition system using high speed data and control telemetry
US9506307B2 (en) 2011-03-16 2016-11-29 Corpro Technologies Canada Ltd. High pressure coring assembly and method
US9567813B2 (en) * 2013-07-18 2017-02-14 Baker Hughes Incorporated Coring tools exhibiting reduced rotational eccentricity and related methods
WO2015038143A1 (en) * 2013-09-13 2015-03-19 Halliburton Energy Services, Inc. Sponge pressure equalization system
US10072471B2 (en) 2015-02-25 2018-09-11 Baker Hughes Incorporated Sponge liner sleeves for a core barrel assembly, sponge liners and related methods
CN109025879B (zh) * 2018-08-13 2023-06-09 四川大学 保压筒密封结构
US11131147B1 (en) * 2020-04-29 2021-09-28 Coreall As Core drilling apparatus and method for converting between a core drilling assembly and a full-diameter drilling assembly
CN116929829B (zh) * 2023-07-18 2024-08-23 北京城建勘测设计研究院有限责任公司 一种地质勘察的岩心取样装置及取样方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2147896A (en) * 1937-08-27 1939-02-21 Reed Roller Bit Co Core taking apparatus
US2633336A (en) * 1948-12-13 1953-03-31 Reed Roller Bit Co Core drilling apparatus
US2713473A (en) * 1953-06-29 1955-07-19 Jack E Talbot Cleanable core barrel
US3207240A (en) * 1961-10-31 1965-09-21 Tiefbohr Messdienst Leutert & Apparatus for the drilling of and the protection of drill cores in deep-welldrilling operations
US3548958A (en) * 1969-07-30 1970-12-22 Exxon Production Research Co Pressure core barrel
US3818997A (en) * 1972-11-06 1974-06-25 Christensen Diamond Prod Co Apparatus and method for situ sharpening of bore hole bits
US4479557A (en) * 1983-07-13 1984-10-30 Diamond Oil Well Drilling Co. Method and apparatus for reducing field filter cake on sponge cores
US5360074A (en) * 1993-04-21 1994-11-01 Baker Hughes, Incorporated Method and composition for preserving core sample integrity using an encapsulating material

Also Published As

Publication number Publication date
CA2242922C (en) 2004-05-25
DE69724230D1 (de) 2003-09-25
NO316131B1 (no) 2003-12-15
WO1997026439A1 (fr) 1997-07-24
EP0874947A1 (de) 1998-11-04
NO983237D0 (no) 1998-07-14
US6164389A (en) 2000-12-26
DE69724230T2 (de) 2004-06-09
BE1009968A5 (fr) 1997-11-04
NO983237L (no) 1998-09-02
CA2242922A1 (en) 1997-07-24

Similar Documents

Publication Publication Date Title
EP0874947B1 (de) Kernbohrverfahren und kernbohrwerkzeug zur durchführung des verfahrens
EP0883731B1 (de) Kernbohrwerkzeug
EP3025060B1 (de) Dichtungsvorrichtung für kolben
FR2778956A1 (fr) Ressort a gaz incorporant un organe de securite
CA2762767C (fr) Amortisseur et atterrisseur equipe d'un tel amortisseur
BE1009966A3 (fr) Carottier.
FR2557219A1 (fr) Dispositif a verin pneumatique muni d'un mecanisme de blocage
FR2560632A1 (fr) Appareil de mise en place d'outils de forage, de completion ou de reconditionnement de puits et appareil a vanne a graisseur
EP2394080A1 (de) Vorrichtung zur selektiven blockierung eines durchflusses
EP1360392B1 (de) Sicherheitsventil für ölbohrlöcher
CA1330756C (fr) Vanne de securite pour puits petrolier, autorisant un fonctionnement en debit artificiel
WO2017009463A1 (fr) Dispositif de protection d'un pion dégradable pour système d'isolation dans une barrière annulaire
WO2017009460A1 (fr) Dispositif d'isolation pour puits avec un disque de rupture
EP0257455B1 (de) Dichtungskörper für Rohrprüfpresse mittels Flüssigkeitsdruck
FR2779194A1 (fr) Dispositif a fluide compressible
EP3708899A1 (de) Hahn, unter druck stehender fluid-behälter und verfahren zum füllen und entnehmen
EP0326493B1 (de) Vorrichtung zur Entlastung einer Bohrlochkopf-Druckschleuse für ein Kohlenwasserstofflager oder einen unterirdischen Gasbehälter
FR2576966A1 (fr) Ensemble de securite annulaire pour puits petrolier, en particulier a double zone de production
WO1992006816A1 (fr) Procede et dispositif pour la mise en place d'un joint torique dans une gorge
EP1072856B1 (de) Füllstandanzeiger für die Rücklaufbremse einer grosskalibrigen Waffe
FR2463353A1 (fr) Dispositif d'injection de lubrifiant pour canalisations d'alimentation d'appareillages pneumatiques
FR2618901A1 (fr) Procede et dispositif permettant d'effectuer l'epreuve hydraulique de corps tubulaires metalliques
FR2708069A1 (fr) Joint d'étanchéité statique.
FR2766229A1 (fr) Sonde pour essai de chargement du sol par dilatation d'un cylindre - moyens de montage et mise en oeuvre
FR2708070A1 (fr) Joint d'étanchéité en statique et en dynamique.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19980810

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE FR GB IT NL

17Q First examination report despatched

Effective date: 20001114

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: HALLIBURTON ENERGY SERVICES, INC.

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: HALLIBURTON ENERGY SERVICES, INC.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): BE DE FR GB IT NL

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 69724230

Country of ref document: DE

Date of ref document: 20030925

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20031027

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20040524

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20060131

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070115

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20131227

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20140131

Year of fee payment: 18

Ref country code: NL

Payment date: 20140108

Year of fee payment: 18

Ref country code: BE

Payment date: 20140127

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20131223

Year of fee payment: 18

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150131

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69724230

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20150801

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20150115

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150801

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150115

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150801

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20150930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150202