CN206376815U - Tail pipe suspension packer - Google Patents
Tail pipe suspension packer Download PDFInfo
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- CN206376815U CN206376815U CN201621395302.4U CN201621395302U CN206376815U CN 206376815 U CN206376815 U CN 206376815U CN 201621395302 U CN201621395302 U CN 201621395302U CN 206376815 U CN206376815 U CN 206376815U
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- central pipe
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- 239000000725 suspension Substances 0.000 title claims description 27
- 229920001971 elastomer Polymers 0.000 claims description 38
- 230000009471 action Effects 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 8
- 229920006172 Tetrafluoroethylene propylene Polymers 0.000 claims description 5
- 238000012856 packing Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 19
- 239000004576 sand Substances 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003129 oil well Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 210000004210 tooth component Anatomy 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model provides a tail pipe hangs packer, wherein, the coaxial cover of outer center tube is located on the inner center tube, outer center tube and inner center tube are connected to interior outer pipe connection spare, the top connection is connected with the upper end of inner center tube, piston assembly, the packing element, the cone, slips and release cover top-down overlap in proper order and establish on the outer wall of outer center tube, the cone has one to be used for the upper portion complex inclined plane with the slips, the upper portion of slips sets up on the inclined plane of cone, cam piece cover is located on the outer wall of outer center tube, the first end of connecting rod is connected with piston assembly's upper end, the position that the distance was provided with the cam piece on the outer center tube is preset apart from the department and still is provided with the bottom shape assorted recess with the cam piece, the recess is used for holding cam piece when the deblocking.
Description
Technical Field
The utility model relates to the field of mechanical technology, especially, relate to a tail pipe hangs packer.
Background
In the process of exploiting oil and gas wells, the damage of sand production of the oil wells is great. Therefore, how to effectively prevent sand and ensure the production of an oil layer in the oil extraction process becomes a technical problem which needs to be solved urgently.
At present, aiming at a carbonate well region of a Tarim oil field, during oil extraction, sand grains formed by sand grain migration or reservoir collapse in a reservoir of the carbonate well enter an oil pipe, the oil pipe is blocked, even a part of electric pumps of an electric pump pumping well are damaged, and the problems of reduction of oil extraction output, even production halt and the like are caused.
However, there is currently no effective way to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a tail pipe hangs packer to realize the sand control and improve oil well production efficiency.
The utility model provides a tail pipe hangs packer, include: the device comprises an upper joint, an inner central pipe, an outer central pipe, a connecting rod, a piston assembly, a rubber cylinder, a cone, a slip, an inner pipe and outer pipe connecting piece, a cam block and a release sleeve; wherein,
the outer central pipe is coaxially sleeved on the inner central pipe, the lower ends of the outer central pipe and the inner central pipe are connected through the inner and outer pipe connecting pieces, the upper joint is connected with the upper end of the inner central pipe, and the piston assembly, the rubber cylinder, the cone, the slips and the release sleeve are sequentially sleeved on the outer wall of the outer central pipe from top to bottom; the cone is provided with an inclined plane used for being matched with the upper part of the slip, and the upper part of the slip is arranged on the inclined plane of the cone; the lower part of the slip is used for connecting a tail pipe; the cam block is sleeved on the outer wall of the outer central pipe and is used for connecting the outer central pipe with the release sleeve; the first end of the connecting rod is connected with the upper end of the piston assembly and is used for transmitting the pressure in the inner central tube to the piston assembly, the piston assembly extrudes the rubber cylinder and the cone after receiving the force transmitted by the connecting rod, and the slips are used for being supported under the action of the inclined surface of the cone and then are hung on the inner wall of the sleeve; the outer center tube is provided with a groove matched with the bottom shape of the cam block at a preset distance away from the position where the cam block is arranged, and the groove is used for containing the cam block during deblocking.
In the above liner hanging packer, the piston assembly comprises: a cylinder sleeve, an upper piston and a lower piston; wherein,
the cylinder sleeve is sleeved on the outer wall of the outer central pipe, the upper piston is arranged in a cavity between the cylinder sleeve and the outer wall of the outer central pipe, the lower piston is arranged in the cavity and extends out of the cavity, the upper piston is connected with the lower piston, and one end of the lower piston, which extends out of the cavity, is in contact with the rubber cylinder.
In the above liner hanging packer, the piston assembly further comprises: the locking ring is arranged on the outer wall of the outer central pipe between the upper piston and the lower piston, first sawteeth are arranged on the contact surface of the locking ring and the outer wall of the outer central pipe, second sawteeth are arranged at the corresponding position of the outer wall of the outer central pipe, and the first sawteeth are matched with the second sawteeth, so that the lower piston can only move downwards.
In the above tail pipe suspension packer, the piston assembly further comprises a pin for connecting the cylinder sleeve and the lower piston.
In the above liner suspension packer, the liner suspension packer further comprises: the hydraulic anchor spherical tooth assembly is sleeved on the inner central pipe, and the lower end of the hydraulic anchor spherical tooth assembly is connected with the second end of the connecting rod.
In the above liner hanging packer, the hydraulic anchor button assembly comprises: the hydraulic anchor button seat is sleeved on the inner central tube, the button pressing plate, the button and the spring are arranged in the cavity of the hydraulic anchor button seat, the button pressing plate is used for fixing the button on the inner wall of the hydraulic anchor button seat, and the spring is used for providing resilience force for the button.
In the above tail pipe suspension packer, the tail pipe suspension packer further comprises a bushing, the bushing is sleeved on the outer wall of the outer central pipe, the rubber sleeve is sleeved on the bushing, and a part of the cone is sleeved on the bushing.
In the above-mentioned liner hangs packer, liner hangs packer includes 3 the slips, liner hangs packer still includes: and the slip retaining ring is arranged between the slip and the release sleeve and is used for fixing 3 slips.
In the above liner hanging packer, the inner and outer pipe connecting members are pins.
In the above tail pipe suspension packer, the rubber sleeve is made of tetrafluoroethylene-propylene rubber.
The utility model provides a tail pipe hangs packer through setting up top connection, interior center tube, outer center tube, connecting rod, piston assembly, packing element, cone, slips, interior outer tube connecting piece, cam piece and release cover, wherein, outer center tube coaxial sleeve locates on the interior center tube, the lower extreme of outer center tube and interior center tube passes through interior outer tube connecting piece to be connected, the top connection is connected with the upper end of interior center tube, piston assembly, packing element, cone, slips and release cover are established on the outer wall of outer center tube in proper order from top to bottom; the cone is provided with an inclined plane used for being matched with the upper part of the slip, and the upper part of the slip is arranged on the inclined plane of the cone; the lower part of the slip is used for connecting a tail pipe; the cam block is sleeved on the outer wall of the outer central pipe and is used for connecting the outer central pipe with the release sleeve; the first end of the connecting rod is connected with the upper end of the piston assembly and is used for transmitting the pressure in the inner central pipe to the piston assembly, the piston assembly extrudes the rubber cylinder and the cone after receiving the force transmitted by the connecting rod, and the slips are used for being supported under the action of the inclined surface of the cone and then are hung on the inner wall of the sleeve; the position that is provided with the cam piece apart from on the outer center tube is preset apart from the department still be provided with the bottom shape assorted recess of cam piece, the recess is used for holding cam piece when the deblocking, has realized following technological effect: firstly, a tail pipe can be suspended through the tail pipe suspension packer, so that the tail pipe suspension operation cost is reduced; secondly, after the tail pipe suspension separator is seated, the suspended tail pipe can prevent silt in the open hole section from entering an oil pipe, further prevent the silt from blocking the oil pipe and damaging an electric pump, improve the production efficiency of an oil well and reduce the production cost; thirdly, the tail pipe suspension packer can realize deblocking by arranging a cam block, a deblocking sleeve and a groove, and the deblocking requirement is met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a tail pipe suspension packer provided by an embodiment of the present invention;
fig. 2 is an application scenario schematic diagram of a tail pipe suspension packer provided by the embodiment of the present invention.
Reference numerals:
1: an upper joint;
2: a hydraulic anchor ball toothholder;
3: an inner center tube;
4: a connecting rod;
5: a screw;
6: a spring: (ii) a
7: pressing a ball tooth into a sheet;
8: spherical teeth;
9: cylinder liner: (ii) a
10: an upper piston;
11: an outer center tube;
12: a locking ring;
13: a pin;
14: a lower piston;
15: a bushing;
16: a rubber cylinder;
17: a cone;
18: slips;
19: a slip retainer ring;
20: an inner and outer pipe coupling;
21: a cam block;
22: releasing the sleeve;
23: a screw;
24: a groove;
100: hanging a packer by a tail pipe;
200: a sleeve;
300: an open hole section;
400: a tail pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The terms "first," "second," "third," and "fourth," etc. in the description and claims of this invention and in the above-described drawings (if any), are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Moreover, the terms "comprises," "comprising," and any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or acts is not necessarily limited to those steps or acts explicitly listed, but may include other steps or acts not expressly listed or inherent to such process, method, article, or apparatus.
The technical solution of the present invention will be described in detail with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Fig. 1 is the utility model discloses tail pipe hangs the structural schematic diagram of packer that the embodiment provided. Fig. 2 is an application scenario schematic diagram of a tail pipe suspension packer provided by the embodiment of the present invention.
In actual use, as shown in fig. 2, the tailpipe suspension packer 100 provided by the present invention is suspended with a tailpipe 400. The liner hanger packer 100 is set at a preset location in the casing 200. The liner 400 is located in the open hole section 300. During completion, a casing 200 is disposed in the upper portion of the open hole section 300.
In actual use, the liner hanger packer 100 with the liner 400 suspended therein is lowered through a release string to a preset position in the casing 200 and the liner hanger packer 100 is set in the casing 200. At this point, the liner 400, which is located below the liner hanger packer 100, is located just in the open hole section 300. Alternatively, the tail pipe 400 may be a screen provided with sand control holes. Thus, during subsequent oil recovery, crude oil can enter the tail pipe 400 through the sand control holes on the tail pipe 400, and silt in the open hole segment 300 is filtered out of the tail pipe 400 by the tail pipe 400 and cannot enter the tail pipe 400. Meanwhile, the tail pipe hanging packer 100 which is set in the casing 200 can seal the annulus between the tail pipe hanging packer 100 and the casing 200, so that silt in the open hole section 300 can not enter an oil pipe through a gap between the casing 200 and the tail pipe hanging packer 100, the problems of blocking of the oil pipe and damage of an electric pump are effectively avoided, the sand prevention effect is achieved, and the production of an oil layer is guaranteed. In summary, the liner hanger packer 100 provided in this embodiment has a fixing effect on the liner 400, that is, the liner 400 connected to the liner hanger packer is hung in the open hole 300 by setting the liner hanger packer 100 in the casing 200, so that the cost of liner 400 hanging operation is reduced, and the sand prevention purpose is achieved.
As shown in FIG. 1, the utility model provides a tail pipe hangs packer includes: the upper joint 1, the inner central pipe 3, the outer central pipe 11, the connecting rod 4, the piston assembly, the rubber cylinder 16, the cone 17, the slips 18, the inner pipe connector 20, the outer pipe connector 20, the cam block 21 and the release sleeve 22.
Wherein, outer center tube 11 is coaxially nested on inner center tube 3, and the lower ends of outer center tube 11 and inner center tube 3 are connected through inner and outer tube connecting piece 20. The upper joint 1 is connected with the upper end of an inner central tube 3. In this embodiment, when the liner is used as a suspended packer, the position close to the wellhead is the upper position, and the position far from the wellhead is the lower position. The outer central tube 11 and the inner central tube 3 are both hollow round tubes. One end of the upper joint 1 is connected with the upper end of the inner central pipe 3, and the other end of the upper joint 1 is used for connecting a releasing tubular column. The connection mode of the upper joint 1 and the upper end of the inner central tube 3 can be a threaded connection. Alternatively, the inner and outer tube couplings 20 are pins.
The piston assembly, the rubber cylinder 16, the cone 17, the slips 18 and the release sleeve 22 are sequentially sleeved on the outer wall of the outer central pipe 11 from top to bottom. The cone 17 has an inclined surface for cooperating with an upper portion of the slips 18, and the upper portion of the slips 18 is disposed on the inclined surface of the cone 17. The lower portion of the slips 18 are used to connect tailpipes. The cam block 21 is sleeved on the outer wall of the outer central tube 11 and is used for connecting the outer central tube 11 with the release sleeve 22. A first end of the connecting rod 4 is connected to the upper end of the piston assembly for transmitting the pressure in the inner centre tube 3 to the piston assembly. The piston assembly presses the rubber cylinder 16 and the cone 17 after receiving the force transmitted by the connecting rod 4. The slips 18 are intended to be supported and then to sit on the casing inner wall by the inclined surface of the cone 17. The outer center tube 11 is further provided with a groove 24 matched with the bottom shape of the cam block at a preset distance away from the position where the cam block 21 is arranged, and the groove 24 is used for accommodating the cam block 21 during unsealing.
The connecting rod 4 can be connected with the inner central tube 3, and transmits the pressure in the inner central tube 3 to the piston assembly, so that the piston assembly extrudes the rubber cylinder 16 after being stressed. The cone 17 is a part which is wider at the upper part and gradually narrows at the lower part, so that a slope is formed. A portion of the slips 18 are disposed on and movable relative to the inclined surface. The rubber cylinder 16 can move downwards on the outer wall of the outer central tube 11 along the axial direction of the outer central tube 11 under the action of the piston assembly and expand to be in contact with the inner wall of the casing to realize packing. The cone 17 can move on the outer wall of the outer central tube 11 along the axial direction of the outer central tube 11 under the action of the rubber cylinder 16. After the cone 17 moves downwards, the slips 18 can be supported and set in the casing under the action of the inclined surface of the cone 17, so that the rubber cylinder 16 can be completely set, and the tail pipe hanging operation is realized.
The slips 18 may be secured by screws 23. The screw 23 may be a socket head cap screw.
Optionally, the rubber tube 16 is made of tetrafluoroethylene-propylene rubber (AFLAS).
The AFLAS rubber cylinder can resist high temperature and can realize setting under a high-temperature environment. The application range and the reliability of the tail pipe suspension packer are improved.
Optionally, the piston assembly comprises: cylinder liner 9, upper piston 10 and lower piston 14. Wherein, the cylinder sleeve 9 is sleeved on the outer wall of the outer central tube 11. The upper piston 10 is arranged in a cavity between the cylinder liner 9 and the outer wall of the outer central tube 11, and the lower piston 14 is arranged in the cavity and extends out of the cavity. The upper piston 10 is connected to a lower piston 14. The end of the lower piston 14 extending out of the cavity is in contact with the rubber cylinder 16. The connection of the upper piston 10 and the lower piston 14 may be a threaded connection. Both the upper piston 10 and the lower piston 14 are movable in a cavity between the cylinder jacket 9 and the outer wall of the outer central tube 11.
The piston assembly further includes: a locking ring 12. A locking ring 12 is disposed on the outer wall of the outer center tube 11 between the upper piston 10 and the lower piston 14. In this implementation, the lower piston 14 is a narrow-top, wide-bottom part, and the upper part is at a distance from the outer center tube 11, i.e. there is a step on the lower piston 14. The lower piston 14 is connected to the upper piston 10 through the upper portion. A gap is formed between the upper piston 10 and the lower piston 14, and a locking ring 12 is disposed on the outer wall of the outer center tube 11 at the gap. The surface of the locking ring 12 contacting with the outer wall of the outer central tube 11 is provided with first saw teeth, the corresponding position of the outer wall of the outer central tube 11 is provided with second saw teeth, and the first saw teeth and the second saw teeth are matched, so that the lower piston can only move downwards.
The first saw tooth and the second saw tooth are arranged to ensure that the setting state of the rubber barrel 16 and the setting state of the slips 18 cannot be released.
The piston assembly also includes a pin 13. The pin 13 is used to connect the cylinder liner 9 with the lower piston 14.
The pin 13 can prevent the piston 14 from moving to cause early setting under abnormal conditions, and the reliability of the tail pipe hanging packer operation is improved.
Optionally, the liner hanging packer further comprises: the hydraulic anchor button tooth component is sleeved on the inner central tube 3, and the lower end of the hydraulic anchor button tooth component is connected with the second end of the connecting rod 4.
The hydraulic anchor button subassembly includes: a hydraulic anchor ball toothholder 2, a ball tooth pressing sheet 7, a ball tooth 8 and a spring 6. The hydraulic anchor ball tooth seat 2 is sleeved on the inner central tube 3 and provides a support and a sealed pressure cavity for the ball tooth 8. The ball tooth pressing sheet 7, the ball tooth 8 and the spring 6 are all arranged in the cavity of the hydraulic anchor ball tooth holder 2. The button pressing plate 7 is used for fixing the button 8 on the inner wall of the hydraulic anchor button seat 2. The spring 6 is used to provide a resilient force to the button 8. The button plate 7 can be fixed in the hydraulic anchor button seat 2 by means of screws 5. Alternatively, the screw 5 may be a socket head cap screw.
The hydraulic anchor button assembly can prevent the tail pipe from hanging the packer to jump upwards, and the reliability of operation is improved.
After the hydraulic anchor button assembly is arranged, the pressure in the inner central tube 3 is finally transmitted to the inside of the cylinder sleeve 9 through the through hole of the upper joint 1, the pressure transmitting hole of the hydraulic anchor button seat 2 and the connecting rod 4, the upper piston 10 is pushed to move downwards, and the upper piston 10 drives the lower piston 14 and the locking ring 12 to move downwards. The lower piston 14 drives the rubber cylinder 16 to move downwards and expand to set. The rubber cylinder 16 drives the cone 17 to move downwards. The slips 18 are supported by the inclined face of the cone 17, set within the casing.
The liner hanger packer also includes a liner 15. The bushing 15 is sleeved on the outer wall of the outer center tube 11. The rubber sleeve 16 is sleeved on the lining 15. A portion of the cone 17 is fitted over the liner 15.
The friction between the rubber sleeve 16 and the cone 17 on the outer wall of the outer central tube 11 can be reduced by arranging the bushing 15, the outer central tube 11 is protected, the service life of the outer central tube 11 is prolonged, the cost is saved, and the operation reliability is improved.
In one possible implementation, the liner hanger packer includes 3 slips 18. The liner hanger packer also includes a slip retainer 19. A slip retainer ring 19 is disposed between the slips 18 and the release sleeve 22 for holding 3 slips 18. The slips 18 are provided with serrations on the outside to allow setting in the casing by the serrations when strung open.
The slip retainer 19 is provided to allow 3 slips 18 to be a unified entity when supported. Of course, the number of slips 18 may be other numbers, and the embodiment is not limited thereto.
The setting and unsetting process of the liner hanging packer provided by the embodiment is described in detail as follows:
setting: and (4) running the tail pipe suspension packer with the suspended tail pipe into a preset position of the casing pipe through the releasing pipe column. Thereafter, the pressure in the inner pipe 3 may be build up by injecting pressure into the inner pipe 3. The pressure in the inner central tube 3 is transmitted to a cavity between the cylinder sleeve 9 and the outer wall of the outer central tube 11 through the through hole of the upper joint 1, and then through the pressure transmission hole of the hydraulic anchor ball tooth holder 2 and the connecting rod 4. This pressure may push the upper piston 10 downward. The upper piston 10 pushes the lock ring 12 and the lower piston 14 downward. The lower piston 14 pushes and presses the rubber cylinder 16 and the cone 17 at the lower end of the rubber cylinder 16 to move downwards. When the lower piston 14 pushes and presses the rubber cylinder 16, the rubber cylinder 16 can be expanded under pressure so as to be set in the casing. When the cone 17 moves downwards, the inclined surface of the cone 17 presses the slips 18, and the slips 18 are spread under the action of the inclined surface of the cone 17, so that the slips are hung in the sleeve. The locking ring 12 is provided with saw teeth which can only move in one direction, so that the setting of the rubber cylinder 16 and the setting and hanging state of the slips 18 can not be released.
Under the condition that the tail pipe suspension separator is in a setting state, tail pipe suspension can be realized, and the cost of tail pipe suspension operation is reduced. And because the tail pipe can prevent sand, the tail pipe hanging separator can prevent sand in a setting state, so that sand is prevented from entering an oil pipe, the oil pipe is prevented from being blocked and the electric pump is prevented from being damaged, and normal production of an oil layer is ensured.
And (3) deblocking process: the upper joint 1 and the inner central pipe 3 connected with the upper joint 1 are lifted by the releasing pipe column. In the set condition, the outer pipe 11 is integrated with the slips 18, at which point the inner pipe 3 moves upwards and the outer pipe 11 cannot move. Therefore, the lifting force will cause relative displacement between the inner pipe 3 and the outer pipe 11, and the inner and outer pipe joints 20 connecting the two will shear. After the inner and outer pipe couplings 20 are sheared, the inner center pipe 3 continues to move upward. At this time, the cam block 21 connecting the outer central tube 11 and the release sleeve 22 will fall into the groove 24 at the lower part of the inner central tube 3, so as to release the constraint relationship between the outer central tube 11 and the release sleeve 22, and the release sleeve 22 can move downwards at this time, so that the slip retainer ring 19, the slip 18, the cone 17 and the rubber barrel 16 at the upper part can all move downwards, and the unlocking and the releasing can be realized.
After deblocking, the tail pipe can be moved.
The tail pipe suspension packer provided by the embodiment is characterized in that an upper joint, an inner central pipe, an outer central pipe, a connecting rod, a piston assembly, a rubber cylinder, a cone, a slip, an inner pipe and outer pipe connecting piece, a cam block and a release sleeve are arranged, wherein the outer central pipe is coaxially sleeved on the inner central pipe, the lower ends of the outer central pipe and the inner central pipe are connected through the inner pipe and outer pipe connecting piece, the upper joint is connected with the upper end of the inner central pipe, and the piston assembly, the rubber cylinder, the cone, the slip and the release sleeve are sequentially sleeved on the outer wall of the outer; the cone is provided with an inclined plane used for being matched with the upper part of the slip, and the upper part of the slip is arranged on the inclined plane of the cone; the lower part of the slip is used for connecting a tail pipe; the cam block is sleeved on the outer wall of the outer central pipe and is used for connecting the outer central pipe with the release sleeve; the first end of the connecting rod is connected with the upper end of the piston assembly and is used for transmitting the pressure in the inner central pipe to the piston assembly, the piston assembly extrudes the rubber cylinder and the cone after receiving the force transmitted by the connecting rod, and the slips are used for being supported under the action of the inclined surface of the cone and then are hung on the inner wall of the sleeve; the position that is provided with the cam piece apart from on the outer center tube is preset apart from the department still be provided with the bottom shape assorted recess of cam piece, the recess is used for holding cam piece when the deblocking, has realized following technological effect: firstly, a tail pipe can be suspended through the tail pipe suspension packer, so that the tail pipe suspension operation cost is reduced; secondly, after the tail pipe suspension separator is seated, the suspended tail pipe can prevent silt in the open hole section from entering an oil pipe, further prevent the silt from blocking the oil pipe and damaging an electric pump, improve the production efficiency of an oil well and reduce the production cost; thirdly, the tail pipe suspension packer realizes deblocking through setting up a cam block, deblocking the sleeve and a groove, and meets deblocking requirements.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A liner suspension packer, comprising: the device comprises an upper joint, an inner central pipe, an outer central pipe, a connecting rod, a piston assembly, a rubber cylinder, a cone, a slip, an inner pipe and outer pipe connecting piece, a cam block and a release sleeve; wherein,
the outer central pipe is coaxially sleeved on the inner central pipe, the lower ends of the outer central pipe and the inner central pipe are connected through the inner and outer pipe connecting pieces, the upper joint is connected with the upper end of the inner central pipe, and the piston assembly, the rubber cylinder, the cone, the slips and the release sleeve are sequentially sleeved on the outer wall of the outer central pipe from top to bottom; the cone is provided with an inclined plane used for being matched with the upper part of the slip, and the upper part of the slip is arranged on the inclined plane of the cone; the lower part of the slip is used for connecting a tail pipe; the cam block is sleeved on the outer wall of the outer central pipe and is used for connecting the outer central pipe with the release sleeve; the first end of the connecting rod is connected with the upper end of the piston assembly and is used for transmitting the pressure in the inner central tube to the piston assembly, the piston assembly extrudes the rubber cylinder and the cone after receiving the force transmitted by the connecting rod, and the slips are used for being supported under the action of the inclined surface of the cone and then are hung on the inner wall of the sleeve; the outer center tube is provided with a groove matched with the bottom shape of the cam block at a preset distance away from the position where the cam block is arranged, and the groove is used for containing the cam block during deblocking.
2. The liner hanger packer of claim 1, wherein the piston assembly comprises: a cylinder sleeve, an upper piston and a lower piston; wherein,
the cylinder sleeve is sleeved on the outer wall of the outer central pipe, the upper piston is arranged in a cavity between the cylinder sleeve and the outer wall of the outer central pipe, the lower piston is arranged in the cavity and extends out of the cavity, the upper piston is connected with the lower piston, and one end of the lower piston, which extends out of the cavity, is in contact with the rubber cylinder.
3. The liner hanger packer of claim 2, wherein the piston assembly further comprises: the locking ring is arranged on the outer wall of the outer central pipe between the upper piston and the lower piston, first sawteeth are arranged on the contact surface of the locking ring and the outer wall of the outer central pipe, second sawteeth are arranged at the corresponding position of the outer wall of the outer central pipe, and the first sawteeth are matched with the second sawteeth, so that the lower piston can only move downwards.
4. The liner hanger packer of claim 3, wherein the piston assembly further comprises a pin for connecting the cylinder liner to the lower piston.
5. The liner hanger packer of any one of claims 1-4, further comprising: the hydraulic anchor spherical tooth assembly is sleeved on the inner central pipe, and the lower end of the hydraulic anchor spherical tooth assembly is connected with the second end of the connecting rod.
6. The liner hanger packer of claim 5, wherein the hydraulic anchor button assembly comprises: the hydraulic anchor button seat is sleeved on the inner central tube, the button pressing plate, the button and the spring are arranged in the cavity of the hydraulic anchor button seat, the button pressing plate is used for fixing the button on the inner wall of the hydraulic anchor button seat, and the spring is used for providing resilience force for the button.
7. The liner hanger packer according to any one of claims 1-4, further comprising a liner sleeve disposed over the outer wall of the outer base pipe, the rubber sleeve disposed over the liner sleeve, and a portion of the cone disposed over the liner sleeve.
8. The liner hanger packer of claim 7, wherein the liner hanger packer includes 3 of the slips, the liner hanger packer further comprising: and the slip retaining ring is arranged between the slip and the release sleeve and is used for fixing 3 slips.
9. The liner hanger packer of claim 1, wherein the inner and outer tubular connectors are pins.
10. The liner hanging packer as claimed in claim 1, wherein the rubber sleeve is made of tetrafluoroethylene-propylene rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621395302.4U CN206376815U (en) | 2016-12-19 | 2016-12-19 | Tail pipe suspension packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621395302.4U CN206376815U (en) | 2016-12-19 | 2016-12-19 | Tail pipe suspension packer |
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| CN206376815U true CN206376815U (en) | 2017-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621395302.4U Active CN206376815U (en) | 2016-12-19 | 2016-12-19 | Tail pipe suspension packer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112761561A (en) * | 2019-10-21 | 2021-05-07 | 中国石油化工股份有限公司 | Suspension device for tail pipe |
| CN113530483A (en) * | 2021-07-03 | 2021-10-22 | 任丘市华北石油华坤钻采机械有限公司 | Novel liner hanger |
-
2016
- 2016-12-19 CN CN201621395302.4U patent/CN206376815U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112761561A (en) * | 2019-10-21 | 2021-05-07 | 中国石油化工股份有限公司 | Suspension device for tail pipe |
| CN113530483A (en) * | 2021-07-03 | 2021-10-22 | 任丘市华北石油华坤钻采机械有限公司 | Novel liner hanger |
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