CN201460778U - Expansion pipe type tail pipe hanger - Google Patents
Expansion pipe type tail pipe hanger Download PDFInfo
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- CN201460778U CN201460778U CN2009201102986U CN200920110298U CN201460778U CN 201460778 U CN201460778 U CN 201460778U CN 2009201102986 U CN2009201102986 U CN 2009201102986U CN 200920110298 U CN200920110298 U CN 200920110298U CN 201460778 U CN201460778 U CN 201460778U
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- 238000005553 drilling Methods 0.000 claims abstract description 30
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims 1
- 239000002184 metal Substances 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 5
- 230000005484 gravity Effects 0.000 abstract description 4
- 239000003208 petroleum Substances 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 19
- 238000000034 method Methods 0.000 description 12
- 238000007789 sealing Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 11
- 239000000725 suspension Substances 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 210000000664 rectum Anatomy 0.000 description 8
- 239000004568 cement Substances 0.000 description 7
- 208000034656 Contusions Diseases 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
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Abstract
An expansion pipe type tail pipe hanger is applied to tail pipe hanging construction of petroleum drilling well completion. The pipe joint mainly comprises a feeding joint, a central pipe, a screw cap, a floating valve, a releasing sleeve, an expansion pipe, a tieback sleeve, an expansion cone, a floating valve closing sleeve, a drill rod rubber plug and a releasing top sleeve. The lower part of the feeding joint is connected with the central pipe through internal threads. The lower end of the releasing barrel is connected with the upper end of the spline sleeve by a spline. The lower end of the spline housing is in threaded connection with an expansion pipe. The outer wall of the expansion pipe is provided with an annular boss. The lower end of the expansion pipe is connected with the upper end of the tie-back cylinder. An expansion device assembly is connected within the tieback cartridge and at the lower end of the center tube. The outer walls of the tail pipe rubber plug hanging seat and the screw cap are sleeved with a float valve closing sleeve. The float valve closing sleeve is connected with an expansion cone. The floating valve closing sleeve is connected with the screw cap through a pin. The expansion pipe outer wall has the metal boss, accomplishes through the interference fit of metal boss and outer sleeve pipe and hangs and set, does not receive gravity and slips eccentric influence like conventional liner hanger.
Description
Technical field
The utility model relates to the petroleum drilling technology field, and particularly a kind of special tool of drilling completion tail tube hanging is a kind of extension hanger
Background technology
The extension hanger that general drilling completion is used is mechanical type or fluid pressure type, drilling rod union tail hanger and tail pipe are gone into after well puts in place, utilize mechanical action or hydraulic way that slip insert on the hanger is opened and be adjacent on outer protective casing inwall, slip insert can hang tail pipe weight.Generally extension hanger hang finish after cementing well.Present mechanical type or fluid pressure type extension hanger can be divided into sealing and two kinds of blow-by again in function: after (1) can realize that the hanger of top seal is finished cementing, can continue action, the distortion realization by rubber parts is to the sealing of suspended portion; (2) extension hanger that can not realize sealing function for realizing the sealing on top, must be given up the central tube of drilling rod and hanger after finishing suspension and cementing, is lowered to the packer instrument again with top seal.No matter be that mechanical type or fluid pressure type extension hanger are easy to the top seal inefficacy behind the certain hour under arms,, influenced development effectiveness and subsequent job because the tail pipe cement sheath also can't reach sealing effectiveness through after the long period.In addition, conventional mechanical formula and fluid pressure type extension hanger have designed more component of machine for satisfying suspension and setting function at radial structure, cause the interior latus rectum of hanger little, and some restrictions are received in fashionable meeting under the instrument.Other conventional tail pipe hanger is sat in horizontal well and is hung difficulty.General extension hanger design has left-hand thread to be used to give up, so can not just change in the well cementation process, otherwise may cause tail pipe to come off, and then may cause drilling rod to thread off as counter-rotating; It is slip insert and wall collisions that the conventional tail pipe hanger is gone into well, damages easily, and owing to gravitate, the relative pit shaft axis of slip insert is asymmetric state, destroys suspension easily simultaneously, and structural reliability is poor.The conventional tail pipe hanger often will be thrown plug and pitching after the cementing, the cementing head complexity, and the operation complexity, also more complicated of technology hangs, sets and give up.
The utility model content
The purpose of this utility model provides a kind of expansion tube type liner hanger, realizes following purpose: (1) guarantee tail pipe be lowered to put in place after, can in the well cementation process, rotate tubing string and up and down tubing string, improve annular space cement paste flowability, improve cementing quality.(2) realize good self seal, save this link of sealing of packer instrument, guarantee to hang Duan Gengda latus rectum and better sealing effectiveness.(3) by expansion tube type liner hanger realize more simple and reliable cementing, operation technique hangs, sets and give up.(4) substitute conventional fluid pressure type and mechanical type extension hanger or rotary liner hanger, the reliability of construction operation improves cementing quality in the completion practice of complicated wells such as solution inclined shaft, horizontal well, satisfies the needs of complicated completions such as inclined shaft, horizontal well.
The technical solution adopted in the utility model is: expansion tube type liner hanger, mainly by send into joint, central tube, nut, float valve assembly, tail pipe plug hanging seat, tail pipe plug, the tube of giving up, spline housing, key, cut off nail, expansion tube, tieback tube, expansion cone, float valve cuts out cover, pin, shear pin, drilling rod plug and the top cover of giving up is formed.Sending into joint has centre bore, and sending into joint top has internal thread, is used to connect top rod; It is characterized in that: sending into the joint bottom has external screw thread, sends into the joint lower external thread and connects the tube of giving up, and sends into the joint lower internal thread and connects the central tube upper end.Central tube is used to connect the nut of sending into joint and lower end of upper end, is the mandrel that expansion cone is slided simultaneously.
Give up tube for cylindric, a lower end outer wall of giving up has spline, spline housing upper end inwall has spline, a lower end employing spline of giving up connects the spline housing upper end. and a lower end outer wall of giving up is connected by spline is chimeric with the spline housing upper end, be used to transmit rotation torque, can rotate the bottom tubing string. spline housing is cylindric, and there is screw thread the spline housing lower end. the be threaded upper end of expansion tube, spline housing lower end.
Give up top cover of an annulus cylindricality is arranged on the inwall of tube of giving up, and the top cover of giving up cuts off nail and fixes with giving up to adopt between the tube.Give up the tube and spline housing between fix by key.The outer wall of top cover of giving up withstands key, prevents that key from returning.Bond energy connects give up tube and spline housing, can bear the gravity of the whole tubing strings in bottom.
Tieback tube upper end is threaded in the lower end of expansion tube.The tieback tube is that stairstepping is cylindric, and the effect of tieback tube is that the bottom connects the well cementation casing string; Another effect of tieback tube is to bring the expansion gear assembly of central tube lower end into down-hole, and protection expansion gear assembly.Expansion tube is cylindric, and the expansion tube top and bottom have the structure of connecting thread to be known by the technician, and the publication that is used for the expansion tube under the oil well is more, is not described in detail.But on the outer wall of metal expansion pipe, annular boss is arranged, in disclosed patent, do not relate to.The key of this patent is that annular boss on the expansion tube outer wall and internal surface of sleeve pipe form interference fit after relying on expansion tube to expand, and realizes hanging tail pipe.
Be connected with the expansion gear assembly in the tieback tube and in the lower end of central tube, the expansion gear assembly comprises that expansion cone, float valve close cover, nut, tail pipe plug hanging seat and float valve.Wherein the nut outer wall is stepped, and nut has centre bore, and nut upper end inwall has screw thread, and nut outer wall bottom is an external screw thread.Nut upper end internal thread is connected the lower end of central tube.Nut lower external thread union tail plug hanging seat upper end, there is pressure guide hole at the middle part of tail pipe plug hanging seat, it is that the fluid pressure in the central tube is delivered to the big bottom of expansion cone face that pressure guide hole mainly acts on, and as not opening this hole, then hydraulic coupling can't be imported to the big bottom of expansion cone face.The lower end of tail pipe plug hanging seat connects a tail pipe plug by shear pin.The plug skirt section of tail pipe plug is divided in the tieback tube.The tail pipe plug is the downhole tool that the oil well cementation is often used, because its plug skirt and internal surface of sleeve pipe are interference fit, the tail pipe plug is a conventional components in the drilling liner cementing construction, the cement in the casing string of effect cleaning bottom.
On the outer wall of tail pipe plug hanging seat and nut, be with float valve and close cover.Float valve cuts out cover has step for cylindric inwall, and float valve cuts out cover inwall step seat on the upper surface of nut.Float valve close cover by dowel fixes on the outer wall of nut.Float valve cuts out the cover bottom and is fixed with float valve, the position of float valve is by the pressure guide hole at tail pipe plug hanging seat middle part, circular cover on the float valve can be combined closely with pressure guide hole top under the torsion spring effect, realize the separation of top rod and central tube endoporus fluid space and bottom tail pipe fluid space, float valve under the effect of torsion spring with the valve plate gland on pressure guide hole, pressure guide hole is closed.
Float valve cuts out the set upper side external screw thread and connects an expansion cone, and the expansion cone centre bore is enclosed within on the outer wall of central tube.The profile of expansion cone is a truncated cone.The expansion cone upper end diameter less than lower end diameter and expansion cone lower end diameter greater than expansion tube inner diameter 9-13 millimeter.The expansion cone slip that can make progress under the fluid pressure effect, the expansion cone outer wall carries out hole enlargement to expansion tube.
Float valve close the cover with nut between be connected by pin, pin can not cut off in circulating mud and cementing process.Promptly only reach the expansion pressure reduction of design, and the pressure reduction that circulating mud and cementing cause up and down in expansion cone hour is cut off in pump pressure.When pin was not cut off, float valve cuts out cover made float valve be in open mode; After pin was cut off, expansion cone began up, and to up, it is spacing no longer to be closed cover by float valve, torsion spring is installed on the float valve float valve cuts out under expansion cone drives for float valve.
The open similar products of described float valve are more, storm valve and casing valve generally all adopt valve board structure, valve plate is axially erect along tubing string during opening, and interstage sleeve is spacing to it simultaneously, under certain condition, interstage sleeve moves to certain position, valve plate is no longer formed spacing, this moment valve plate can under the torsion spring effect, rotate to the axial normal direction of tubing string from vertical state, combine with valve seat, close the pressure guide hole at tail pipe plug hanging seat middle part, promptly fluid pressure passes the passage of body to tail pipe.
Described key is a cuboid, and the rectangle dowel hole is arranged on the barrel of giving up, and the tube of will giving up earlier during installation packages the location with spline housing; Key is put into from the rectangle dowel hole on the tube of giving up, put into the top cover of giving up from a lower end of giving up, the top cover of giving up by in the dowel hole that is pressed on the spline housing, penetrates pin with key, promptly finishes the assembling of this key.
The described tube upper end internal thread of giving up is to adopt rectangular thread or trapezoidal thread, its with send into joint formation and be connected the bottom tubing string weight of following fashionable suspended tubes post.When down-hole accidents such as generation bit freezing, by raising and decentralizing the unfreezing of drilling tool method, the tube upper end internal thread of at this moment giving up only plays the outstanding bottom tubing string of holding; When failing unfreezing must take to give up the time, the cooperation by key and keyway realizes giving up.
After expansion tube is inflated, and there is enough frictional force to hang tail pipe between the internal surface of sleeve pipe, the annular boss on the described expansion tube outer wall, width is between the 3-15 millimeter, height is between the 2-5 millimeter, and the interval between per two annular boss is between the 100-200 millimeter.The cross section of the annular boss on the expansion tube outer wall can be a rectangle, also can be triangle or trapezoidal.
The principle and the use of summary expansion tube type liner hanger.Consult Fig. 1 and Fig. 2.
1, drilling rod union tail hanger, tail pipe are gone into well to projected depth, this moment the drilling rod plug to be arranged in cementing head standby;
2, ground turn on pump, circulating mud;
3, cementing discharges drilling rod plug 17 and replaces cement from cementing head; Drilling rod plug 17 is rendered in the drilling rod by cementing head, so generally claim the drilling rod plug, effect one is the cement that replaces in the drilling rod, when it arrives the position of tail pipe plug 6 and 6 cooperations of tail pipe plug, cuts off shear pin 16 in addition.
4, drilling rod plug 17 enters the endoporus of tail pipe plug 6 from drill pipe bore until it under the effect of displacement fluid, and surface pump voltage rise this moment height is cut off shear pin 16, and pump pressure descends;
5, ground continues to suppress,
6, the cement in the combination plug cleaning tail pipe that forms of tail pipe plug 6 and drilling rod plug 17 arrives the float collar position of tail pipe up to this combination plug, and with its bruising; After combination plug and the float collar bruising, pump pressure raises, and along with fluid pressure raises, expansion cone 13 drives float valve and closes and overlap 14 pin 15 cut off under the fluid pressure effect, and float valve 4 cuts out; After float valve 4 cuts out, central tube cuts out with the centre bore that the bottom tail pipe is connected, the upper space fluid pressure continues to raise, promoting expansion cone 13 until fluid pressure upwards slides on central tube 2 and expansion tube 11 internal diameters is carried out hole enlargement, metal boss after expanding on expansion tube 11 outer walls and outer protective casing form interference fit, and final suspension of tail pipe and sealing are provided;
7, continue to suppress the upper end that advances to expansion tube 11 until expansion cone 13, withstand the top cover 18 of giving up, cut off until cutting off nail 10, key 9 falls into the path part on the top cover 18 of giving up, and removes the annexation of giving up between tube 7 and the spline housing 8, until pressure release;
8, carry drilling rod on, the drilling rod band sends into joint 1, the tube 7 of giving up, central tube 2, the top cover 18 of giving up, expansion cone 13, float valve are closed parts such as cover 14, float valve 4, tail pipe plug hanging sleeve 5 and gone out well, finishes whole operation procedures.
Principal character of the present utility model is:
1, only need to throw in a drilling rod plug 17, can make the cemented up slurry after, the top plug, for mud, bruising, hang, slip out of the hand, circulate and finish continuously, and in the well cementation process, can rotate and the reciprocate casing post;
2, when drilling rod plug 17 and 6 combinations of tail pipe plug and with the float collar bruising after, float valve 4 cuts out, and has avoided in expansion tube 11 expansion processes, whole casing string bears high pressure;
3, expansion cone 13 is upwards slided along central tube 2, and expansion tube 11 is carried out hole enlargement;
4, give up the chimeric spline of design between tube 7 and the spline housing 8 can provide moment of torsion for rotation tubing string behind the cementing job, and the rotation tubing string can improve cementing quality.
The beneficial effects of the utility model:
1, the utility model expansion tube type liner hanger can satisfy the needs of complicated completions such as inclined shaft, horizontal well.It is slip insert and wall collisions that the conventional tail pipe hanger is gone into well, damages easily, and owing to gravitate, the relative pit shaft axis of slip insert is asymmetric state, destroys suspension easily simultaneously, and structural reliability is poor.Be processed with the metal boss on the expansion tube in the utility model expansion tube type liner hanger, be lowered in the process not fragile, finish by the interference fit of metal boss and outer layer sleeve simultaneously and hang and set, be subjected to gravity and slips Influence from Eccentric unlike the conventional tail pipe hanger.
2, expansion tube type liner hanger can guarantee tail pipe be lowered to put in place after, in the well cementation process rotation and up and down tubing string, improve annular space cement paste flowability, the raising cementing quality.General extension hanger design has left-hand thread to be used to give up, so can not just change in the well cementation process, otherwise may cause tail pipe to come off, and then may cause drilling rod to thread off as counter-rotating.Give up in expansion tube type liner hanger tube and spline housing design has spline fitted, and as shown in Figure 3, just tube post and up and down tubing string in well cementing operation are realized the better effect of cementing the well;
3, can guarantee to hang Duan Gengda latus rectum and better sealing effectiveness.When tubing strings such as use conventional mechanical formula or fluid pressure type extension hanger suspension tail pipe, screen casing, because the restriction of the radial dimension of hanger actuating mechanism own, after finishing suspension, the interior latus rectum of hanger maximum is often very little, to a certain extent because the latus rectum of hanger is little, its also corresponding being restricted of interior latus rectum of tubing strings such as the tail pipe that hangs or screen casing.For reducing of the restriction of conventional tail pipe hanger to internal diameter size, internal diameter after increase hanging makes things convenient for entering of subsequent job instrument, the utility model with expansion tube as hanger, its lower end is connected other completion tubular column, realized the latus rectum bigger than the conventional tail pipe hanger.Expansion tube type liner hanger carries out hole enlargement by expansion cone to expansion tube simultaneously, makes expansion tube be fitted in outer protective casing inwall, by the direct vulcanized rubber of metal boss in sealing, can make sealing and hang more reliable.
4, by expansion tube type liner hanger realize more simple and reliable cementing, operation technique hangs, sets and give up.The conventional tail pipe hanger often will be thrown plug and pitching after the cementing, the cementing head complexity, and the operation complexity, also more complicated of technology hangs, sets and give up.When adopting this expansion tube type liner hanger cementing, only need to throw a drilling rod plug, need not pitching, so the structure of cementing head is simpler.Cementing, bruising, expansion tube expand, the operation of giving up need not any pause, the pressure release of directly giving up to the end, and technology is simpler.
5, the technical characterstic of expansion tube type liner hanger can make it substitute conventional fluid pressure type and mechanical type extension hanger and rotary liner hanger, and is particularly more reliable in the completion practice of complicated wells such as inclined shaft, horizontal well.
Description of drawings
Fig. 1 is the utility model expansion tube type liner hanger the first half structural profile schematic diagram.
Fig. 2 is the utility model expansion tube type liner hanger the latter half structural profile schematic diagram.
Fig. 3 is the schematic cross section of Fig. 2.
Fig. 4 a is tube 7 the schematic perspective view of giving up; Fig. 4 b is the schematic perspective view of spline housing;
Fig. 4 c is the schematic perspective view of key 9.
Among the figure, 1. send into joint, 2. central tube, 3. nut, 4. float valve, 5. tail pipe plug hanging seat, 6. tail pipe plug, 7. give up tube, 8. spline housing, 9. key, 10. cut off nail, 11. expansion tubes, 12. tieback tubes, 13. expansion cone, 14. float valves cut out cover, 15. pins, 16. shear pin, 17. drilling rod plugs, 18. give up pushes up cover.
The specific embodiment
Embodiment 1: with one 9
5/
8The sleeve pipe that " hangs 7 in the protective casing ", employed expansion tube type liner hanger is an example, and utility model is described in further detail. the external diameter of expansion cone 13 is 195mm, and promptly after operation was finished, the internal diameter of expansion tube 11 was 195mm.
Consult Fig. 1.The utility model expansion tube type liner hanger, mainly by send into joint 1, central tube 2, nut 3, float valve assembly 4, tail pipe plug hanging seat 5, tail pipe plug 6, the tube 7 of giving up, spline housing 8, key 9, cut off nail 10, expansion tube 11, tieback tube 12, expansion cone 13, float valve close cover 14, pin 15, shear pin 16, drilling rod plug 17 and the top cover 18 of giving up is formed.Sending into joint 1 has centre bore, and sending into joint 1 top has internal thread, can connect top rod during construction.
Sending into joint 1 bottom has the rectangle external screw thread, and the rectangle internal thread is adopted in tube 7 upper ends of giving up, and sends into joint 1 lower external thread and connects the tube 7 of giving up, and sends into joint 1 lower internal thread and connects central tube 2 upper ends.About 2000 millimeters of the length of central tube 2,80 millimeters of external diameters, wall thickness 7.Central tube 2 is used to connect the nut of sending into joint 1 and lower end 3 of upper end, still is the slip mandrel of expansion cone 13 simultaneously.
Give up tube 7 for cylindric, and the tube 7 lower end outer walls of giving up have spline, and spline housing 8 upper end inwalls have spline, and tube 7 lower ends of giving up adopt spline to connect spline housing 8 upper ends.Consult Fig. 3.The tube 7 lower end outer walls of giving up are connected by spline is chimeric with spline housing 8 upper ends.Spline housing 8 is cylindric, and there is screw thread spline housing 8 lower ends.The be threaded upper end of expansion tube 11, spline housing 8 lower ends.
1500 millimeters of the length of expansion tube 11,187 millimeters of internal diameters.10 annular boss are arranged on expansion tube 11 outer walls, and the width of annular boss is 8 millimeters, highly is 3 millimeters, is spaced apart 120 millimeters between per two annular boss.The cross section of the annular boss on expansion tube 11 outer walls is a rectangle.
The annulus cylindricality top cover 18 of giving up is arranged on tube 7 the inwall of giving up, and the top cover 18 of giving up adopts 2 to cut off nail 10 fixing with giving up between the tube 7, and 3-5 ton axial compression can be cut off to cut off and be followed closely 10.Give up fixing between tube 7 and the spline housing 8 by 8 keys 9.Key 9 is the cuboid key, and lower plane has circular arc on the key 9.The tube of giving up has the rectangle dowel hole on 7 walls.In the position of spline housing 8 inwall corresponding keys 9 annular groove is arranged.The outer wall of top cover 18 of giving up withstands key 9, prevents that key 9 from returning.The outer end of 8 keys 9 is in the annular groove of spline housing 8 inwalls.Key 9 can connect give up tube 7 and spline housing 8, can bear the gravity of the whole tubing strings in bottom.
Consult Fig. 2.Be connected with a cover expansion gear assembly in tieback tube 12 and in the lower end of central tube 2, the expansion gear assembly includes expansion cone 13, float valve cuts out cover 14, nut 3, tail pipe plug hanging seat 5 and float valve 4.Wherein nut 3 outer walls are stepped, and nut 3 has centre bore, and nut 3 upper end inwalls have screw thread, and nut 3 outer wall bottoms are external screw threads.Nut 3 upper end internal threads are connected the lower end of central tube 2.Nut 3 lower external thread union tail plug hanging seats 5 upper ends, the middle part of tail pipe plug hanging seat 5 is evenly equipped with 2 pressure guide holes, and the lower end of tail pipe plug hanging seat 5 connects a tail pipe plug 6 by 2 shear pins 16.The plug skirt section of tail pipe plug 6 is divided in tieback tube 12.
On the outer wall of tail pipe plug hanging seat 5 and nut 3, be with a float valve and close cover 14.Float valve cuts out cover 14 has step for cylindric inwall, and float valve cuts out and overlaps 14 inwall step seats on the upper surface of nut 3.Float valve cuts out cover 14 and is fixed on the outer wall of nut 3 by pin 15.Float valve cuts out cover 14 bottoms and is fixed with float valve 4, and the position of float valve 4 is at the pressure guide hole at tail pipe plug hanging seat 5 middle parts.
Float valve cuts out cover 14 upper external screw threads and connects an expansion cone 13, and expansion cone 13 centre bores are enclosed within on the outer wall of central tube 2.The profile of expansion cone 13 is a truncated cone.Expansion cone 13 upper end diameter are 195 millimeters less than lower end diameter and expansion cone 13 lower end diameter, and expansion cone 13 upper end diameter are 182 millimeters.
Float valve close the cover 14 with nut 3 between be connected by 2 pins 15.
After operation was finished, the internal diameter of expansion tube 11 was 195mm, the interior latus rectum after finishing much larger than the suspension of conventional tail pipe hanger.The utility model has been compared greater advantage with the conventional mechanical formula with fluid pressure type extension hanger and rotary liner hanger, owing to can obtain more large diameter, application of the present utility model can make things convenient for the follow-up well operations of going into, and better suspension and sealing effectiveness are arranged simultaneously.
When drilling rod plug 17 is the expansion tube type liner hanger suspending construction, from the well head input with drilling fluid to descending, can arrive the top of tail pipe plug 6, play other pumping action.
Embodiment 2: with embodiment 1 difference be the section triangle of the annular boss on expansion tube 11 outer walls.
Embodiment 3: with embodiment 1 difference be that the cross section of the annular boss on expansion tube 11 outer walls is trapezoidal.
Claims (5)
1. expansion tube type liner hanger, mainly by sending into joint (1), central tube (2), nut (3), float valve assembly (4), tail pipe plug hanging seat (5), tail pipe plug (6), give up tin (7), spline housing (8), key (9), cut off nail (10), expansion tube (11), tieback tube (12), expansion cone (13), float valve cuts out cover (14), pin (15), shear pin (16), the drilling rod plug (17) and the top cover (18) of giving up are formed, send into joint (1) centre bore is arranged, send into joint (1) top internal thread is arranged, it is characterized in that: sending into joint (1) bottom has external screw thread, send into joint (1) lower external thread and connect the tube (7) of giving up, send into joint (1) lower internal thread and connect central tube (2) upper end;
Give up tube (7) for cylindric, tube (7) lower end outer wall of giving up has spline, spline housing (8) upper end inwall has spline, tube (7) lower end employing spline of giving up connects spline housing (8) upper end, the tube 7 lower end outer walls of giving up are connected by spline is chimeric with spline housing 8 upper ends, spline housing (8) is cylindric, and there is screw thread spline housing (8) lower end, the be threaded upper end of expansion tube (11), spline housing (8) lower end;
On the inwall of tube (7) of giving up, there is an annulus cylindricality to give up and pushes up cover (18), the top cover (18) of giving up cuts off nail (10) and fixes with giving up to adopt between the tube (7), giving up fixingly by key (9) between tube (7) and the spline housing (8), the top of giving up is overlapped 18 outer wall and is withstood key 9;
Expansion tube 11 is cylindric, and there is connecting thread expansion tube 11 top and bottom, on expansion tube (11) outer wall annular boss is arranged, tieback tube (12) upper end that is threaded in the lower end of expansion tube (11), and tieback tube (12) is that stairstepping is cylindric;
In tieback tube (12) and in the lower end of central tube (2), be connected with the expansion gear assembly, the expansion gear assembly comprises expansion cone (13), float valve cuts out cover (14), nut (3), tail pipe plug hanging seat (5) and float valve (4), wherein nut (3) outer wall is stepped, nut (3) has centre bore, nut (3) upper end inwall has screw thread, nut (3) outer wall bottom is an external screw thread, nut (3) upper end internal thread is connected the lower end of central tube (2), nut (3) lower external thread union tail plug hanging seat (5) upper end, there is pressure guide hole at the middle part of tail pipe plug hanging seat (5), the lower end of tail pipe plug hanging seat (5) connects a tail pipe plug (6) by shear pin (16), and the plug skirt section of tail pipe plug (6) is divided in tieback tube (12);
On the outer wall of tail pipe plug hanging seat (5) and nut (3), be with float valve and close cover (14), float valve cuts out cover (14) has step for cylindric inwall, float valve cuts out cover (14) inwall step seat on the upper surface of nut (3), float valve cuts out cover (14) and is fixed on the outer wall of nut (3) by pin (15), float valve cuts out cover (14) bottom and is fixed with float valve (4), and the position of float valve (4) is by the pressure guide hole at tail pipe plug hanging seat (5) middle part;
Float valve cuts out cover (14) upper external screw thread and connects an expansion cone (13), expansion cone (13) centre bore is enclosed within on the outer wall of central tube (2), the profile of expansion cone (13) is a truncated cone, expansion cone (13) upper end diameter less than lower end diameter and expansion cone (13) lower end diameter greater than expansion tube (11) inner diameter 9-13 millimeter;
Between cutting out cover (14) and nut (3), float valve is connected by pin (15).
2. expansion tube type liner hanger according to claim 1 is characterized in that: described key (9) is a cuboid, on tube (7) wall of giving up the rectangle dowel hole is arranged.
3. expansion tube type liner hanger according to claim 1 is characterized in that: described tube (7) the upper end internal thread of giving up is to adopt rectangular thread or trapezoidal thread.
4. expansion tube type liner hanger according to claim 1, it is characterized in that: the annular boss on described expansion tube (11) outer wall, the width of annular boss is between the 3-15 millimeter, and height is between the 2-5 millimeter, and the interval between per two annular boss is between the 100-200 millimeter.
5. according to claim 1,2,3 or 4 described expansion tube type liner hangers, it is characterized in that: the cross section of the annular boss on expansion tube (11) outer wall is rectangle, triangle or trapezoidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201102986U CN201460778U (en) | 2009-07-30 | 2009-07-30 | Expansion pipe type tail pipe hanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201102986U CN201460778U (en) | 2009-07-30 | 2009-07-30 | Expansion pipe type tail pipe hanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201460778U true CN201460778U (en) | 2010-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009201102986U Expired - Lifetime CN201460778U (en) | 2009-07-30 | 2009-07-30 | Expansion pipe type tail pipe hanger |
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| Country | Link |
|---|---|
| CN (1) | CN201460778U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337848A (en) * | 2010-07-22 | 2012-02-01 | 中国石油天然气股份有限公司 | Locking mechanism for expansion cone |
| CN102373892A (en) * | 2011-12-03 | 2012-03-14 | 中国石油集团西部钻探工程有限公司 | Expansion liner hanger |
| CN101614117B (en) * | 2009-07-30 | 2012-05-30 | 中国石油天然气股份有限公司 | Expansion pipe type tail pipe hanger |
| CN103726803A (en) * | 2013-12-20 | 2014-04-16 | 安东石油技术（集团）有限公司 | Oil-gas well tail pipe hanger protecting device |
| CN104747109A (en) * | 2013-12-31 | 2015-07-01 | 中国石油化工集团公司 | Pressurization expansion mechanism used for expansion hanger |
| CN103758476B (en) * | 2014-01-03 | 2016-04-06 | 中国石油天然气股份有限公司 | Non-cementing expansion type liner hanger |
| CN105604508A (en) * | 2015-12-18 | 2016-05-25 | 中国石油天然气股份有限公司 | Liner hanger |
| CN106401564A (en) * | 2016-06-07 | 2017-02-15 | 华北科技学院 | Measuring device for rapidly sealing coal seam drill hole during drilling |
| CN109736733A (en) * | 2019-02-01 | 2019-05-10 | 中国地质科学院勘探技术研究所 | A device for lowering an expansion pipe |
| CN111271016A (en) * | 2020-04-02 | 2020-06-12 | 广州海洋地质调查局 | A reentrant cone feeding device for ocean drilling |
| RU2738052C1 (en) * | 2020-07-17 | 2020-12-07 | Акционерное общество "Научно-производственное предприятие "Бурсервис" | Device for lowering suspension and cementing shank in well |
-
2009
- 2009-07-30 CN CN2009201102986U patent/CN201460778U/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101614117B (en) * | 2009-07-30 | 2012-05-30 | 中国石油天然气股份有限公司 | Expansion pipe type tail pipe hanger |
| CN102337848A (en) * | 2010-07-22 | 2012-02-01 | 中国石油天然气股份有限公司 | Locking mechanism for expansion cone |
| CN102373892A (en) * | 2011-12-03 | 2012-03-14 | 中国石油集团西部钻探工程有限公司 | Expansion liner hanger |
| CN102373892B (en) * | 2011-12-03 | 2014-04-30 | 中国石油集团西部钻探工程有限公司 | Expansion liner hanger |
| CN103726803B (en) * | 2013-12-20 | 2016-07-20 | 安东石油技术（集团）有限公司 | Oil/gas Well extension hanger preventer |
| CN103726803A (en) * | 2013-12-20 | 2014-04-16 | 安东石油技术（集团）有限公司 | Oil-gas well tail pipe hanger protecting device |
| CN104747109A (en) * | 2013-12-31 | 2015-07-01 | 中国石油化工集团公司 | Pressurization expansion mechanism used for expansion hanger |
| CN103758476B (en) * | 2014-01-03 | 2016-04-06 | 中国石油天然气股份有限公司 | Non-cementing expansion type liner hanger |
| CN105604508A (en) * | 2015-12-18 | 2016-05-25 | 中国石油天然气股份有限公司 | Liner hanger |
| CN105604508B (en) * | 2015-12-18 | 2018-04-06 | 中国石油天然气股份有限公司 | Liner hanger |
| CN106401564A (en) * | 2016-06-07 | 2017-02-15 | 华北科技学院 | Measuring device for rapidly sealing coal seam drill hole during drilling |
| CN106401564B (en) * | 2016-06-07 | 2023-08-08 | 华北科技学院 | Measuring device for drilling while drilling quick sealing coal seam |
| CN109736733A (en) * | 2019-02-01 | 2019-05-10 | 中国地质科学院勘探技术研究所 | A device for lowering an expansion pipe |
| CN111271016A (en) * | 2020-04-02 | 2020-06-12 | 广州海洋地质调查局 | A reentrant cone feeding device for ocean drilling |
| RU2738052C1 (en) * | 2020-07-17 | 2020-12-07 | Акционерное общество "Научно-производственное предприятие "Бурсервис" | Device for lowering suspension and cementing shank in well |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20100512 Effective date of abandoning: 20090730 |