CN211230368U - Packer capable of repeatedly setting - Google Patents
Packer capable of repeatedly setting Download PDFInfo
- Publication number
- CN211230368U CN211230368U CN201920960675.9U CN201920960675U CN211230368U CN 211230368 U CN211230368 U CN 211230368U CN 201920960675 U CN201920960675 U CN 201920960675U CN 211230368 U CN211230368 U CN 211230368U
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- Prior art keywords
- piston
- setting
- sleeve
- wall
- sit
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- 230000000694 effects Effects 0.000 claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims 2
- 230000009471 action Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
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Abstract
A repeatable setting packer relates to the technical field of oilfield downhole tools and comprises a central tube, a rubber cylinder and a setting mechanism, wherein the setting mechanism comprises a setting piston, a piston sleeve, a locking block, a setting sleeve, a lower joint and a setting pin, the setting piston is arranged in the piston sleeve, the lower joint is connected with the lower end of the central tube through threads, the outside of the setting piston is sleeved with an auxiliary piston, the outer wall of the setting piston is provided with a shaft snap spring for limiting the lower side of the auxiliary piston, the side wall of the setting piston is provided with a balance hole for communicating the inner side and the outer side of the setting piston, the axial position of the balance hole is positioned between the setting piston and the auxiliary piston, when the auxiliary piston slides to the upper limit position along the outer wall of the setting piston, the balance hole is still not communicated with the space at the lower side of the auxiliary piston, install the stopper on the inner wall of piston sleeve, the stopper passes through the screw and installs on the inner wall of piston sleeve. The utility model discloses can effectively guarantee the effect that resets.
Description
Technical Field
The utility model belongs to the technical field of the oil field instrument in the pit, especially, relate to a can repeat seat packer.
Background
Repeated deblocking packer is a novel packer commonly used in the oil field, and this kind of packer can realize setting and deblocking many times in the pit, has simplified construction process by a wide margin, and wherein, the utility model patent that patent number is CN201220555698.X discloses a sand control washable well compression packer, and this packer makes the online deblocking of packer through the mode of suppressing to the oil jacket annular space to can set up once more after the deblocking. However, such packers have a few disadvantages: during the deblocking, the piston cover, sit and seal the piston and relieve the drive power that parts such as envelope reset and come from the elastic restoring force of packing element, however, at the deblocking in-process that resets, along with the recovery of packing element elastic deformation, the elastic restoring force that it can provide is littleer and smaller, to the terminal stage that deformation resumes, the elastic restoring force of packing element often is difficult to overcome the frictional force that parts such as piston cover, sit and seal the piston and relieve the envelope reset in-process and received, leads to the packing element can not reset completely at the deblocking in-process. Accordingly, there is a need for improvements to the above-mentioned patents.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem who exists among the background art, the utility model provides a can repeat the setting packer.
The utility model provides a technical problem adopt following technical scheme to realize: the utility model provides a packer capable of repeatedly setting, which comprises a central tube, a rubber cylinder and a setting mechanism, wherein the setting mechanism comprises a setting piston, a piston sleeve, a locking block, a setting sleeve, a lower joint and a setting pin, the setting piston is arranged in the piston sleeve, the piston sleeve and the setting sleeve are connected into a whole through screw threads, the lower joint is connected with the lower end of the central tube through screw threads, the setting sleeve is connected with the lower joint through the setting pin, when setting, the setting piston presses the central tube, the setting piston moves upwards under the pressure action and drives the piston sleeve, the locking block and the setting sleeve to move upwards together, and the setting pin is cut off at the same time, when deblocking, the setting piston moves downwards along the central tube under the pressure action of the oil sleeve annulus and removes the locking state of the locking block, thereby realizing the deblocking of the packer, the outer side sleeve of the setting piston is provided with an auxiliary piston, the outer wall of the setting piston is provided with a shaft-used snap spring for limiting the lower side of the auxiliary, the side wall of the setting piston is provided with a balance hole for communicating the inner side and the outer side of the setting piston, the axial position of the balance hole is positioned between the setting piston and the auxiliary piston, when the auxiliary piston slides to an upper limit position along the outer wall of the setting piston, the balance hole is still not communicated with the space below the auxiliary piston, the inner wall of the piston sleeve is provided with a limiting block, and the limiting block is arranged on the inner wall of the piston sleeve through a screw;
the central pipe is provided with a liquid passing hole, and the axial position of the liquid passing hole is positioned at the lower side of the auxiliary piston.
The utility model has the advantages that: in the utility model, during setting, the pressure entering the central tube acts on the auxiliary piston first, the auxiliary piston moves to the extreme position and then transmits the force to the setting piston, and the setting piston transmits the force to the piston sleeve, thereby pushing the rubber cylinder and realizing setting; when the oil sleeve is unsealed, pressure from the annular space of the oil sleeve firstly passes through the balance hole to reach the upper side of the auxiliary piston and acts on the auxiliary piston, so that the auxiliary piston moves downwards to the lower limit position, at the moment, a combined piston formed by the setting piston and the auxiliary piston continues to move downwards due to the continuous action of the pressure, in the downward process, the lower end of the setting piston is wedged into the inner side of the locking block, so that the locking action of the locking block is relieved, the unsealing is realized, after the unsealing, the elastic restoring force of the rubber cylinder forces the piston sleeve, the setting sleeve and the locking block to move downwards, meanwhile, the combined piston continues to move downwards under the action of the pressure, the lower end of the auxiliary piston abuts against the limiting block and applies downward driving force to the limiting block, and the piston sleeve and. Therefore, the utility model discloses can effectively guarantee the effect that resets.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1-central tube, 2-rubber cylinder, 3-setting piston, 4-auxiliary piston, 5-piston sleeve, 6-locking block, 7-setting sleeve, 8-lower joint, 9-setting pin, 10-limiting block, 11-screw, 12-balance hole, 13-shaft snap spring and 14-liquid passing hole.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
this embodiment includes center tube 1, packing element 2 and setting mechanism, setting mechanism is including setting piston 3, piston sleeve 5, locking piece 6, set up the cover 7, lower clutch 8 and set up seal pin 9, set up the piston 3 in piston sleeve 5, piston sleeve 5 and set up seal sleeve 7 pass through threaded connection and become integrative, lower clutch 8 passes through threaded connection at the lower extreme of center tube 1, set up cover 7 and be connected with lower clutch 8 through setting pin 9, when setting, beat to pressing in the center tube 1, set up piston 3 upwards removal and drive piston sleeve 5 under the pressure effect, locking piece 6 and set up seal sleeve 7 upwards remove together, cut off simultaneously and set up seal pin 9, during the deblocking, set up piston 3 descends and removes the locking state of locking piece 6 along center tube 1 under the pressure effect that comes from the oil jacket annular space, thereby realize the deblocking of packer. The above is the structure existing in the prior art, and is not described in detail herein.
The outer side of the setting piston 3 is sleeved with an auxiliary piston 4, and the auxiliary piston 4 can slide up and down along the outer wall of the setting piston 3. The outer wall of the setting piston 3 is provided with a shaft snap spring 13 for limiting the lower side of the auxiliary piston 4, and when the lower end of the auxiliary piston 4 abuts against the shaft snap spring 13 and continues to bear downward pressure, the setting piston 3 can move downwards under the pushing of the auxiliary piston 4, so that the setting piston 3 and the auxiliary piston 4 form a whole, which is called as a combined piston. The side wall of the setting piston 3 is provided with a balance hole 12 for communicating the inner side and the outer side of the setting piston 3, the axial position of the balance hole 12 is positioned between the setting piston 3 and the auxiliary piston 4, when the auxiliary piston 4 slides to the upper limit position along the outer wall of the setting piston 3, the balance hole 12 is still not communicated with the space below the auxiliary piston 4, namely, the pressure is still sealed at the lower sides of the setting piston 3 and the auxiliary piston 4, thereby ensuring that the setting piston 3 and the auxiliary piston 4 smoothly go upwards in the setting process. Install stopper 10 on the inner wall of piston sleeve 5, stopper 10 passes through screw 11 to be installed on the inner wall of piston sleeve 5, and stopper 10's effect is the power transmission of exerting force with vice piston 4 for piston sleeve 5.
In the utility model, during setting, the pressure entering the central tube 1 acts on the auxiliary piston 4 through the liquid hole 14, the auxiliary piston 4 moves to the extreme position and then transmits the force to the setting piston 3, and the setting piston 3 transmits the force to the piston sleeve 5, thereby pushing the rubber cylinder 2 and realizing setting; when the piston is unlocked, the pressure from the oil sleeve annulus firstly reaches the upper side of the auxiliary piston 4 through the balance hole 12 and acts on the auxiliary piston 4, so that the auxiliary piston 4 moves downwards to the lower limit position, at the moment, due to the continuous action of the pressure, the combined piston formed by the setting piston 3 and the auxiliary piston 4 continues to move downwards, in the downward process, the lower end of the setting piston 3 is wedged into the inner side of the locking block 6, so that the locking effect of the locking block 6 is relieved, the unlocking is realized, after the unlocking is finished, the elastic restoring force of the rubber cylinder 2 forces the piston sleeve 5, the setting sleeve cover 7 and the locking block 6 to move downwards, meanwhile, the combined piston continues to move downwards under the action of the pressure, the lower end of the auxiliary piston 4 abuts against the limiting block 10 and applies downward driving force to the limiting block 10, so that the piston sleeve 5 and the setting sleeve cover. Therefore, the utility model discloses can effectively guarantee the effect that resets.
Claims (1)
1. The utility model provides a can repeatedly sit and seal packer, including center tube (1), packing element (2) and seat and seal the mechanism, it sets up in piston sleeve (5) to sit to seal the mechanism including sitting and sealing piston (3), piston sleeve (5), locking piece (6), sit the cover (7), lower clutch (8) and sit and seal pin (9), it sets up in piston sleeve (5) to sit to seal piston (3), piston sleeve (5) and sitting cover (7) become an organic whole through threaded connection, lower clutch (8) are through threaded connection at the lower extreme of center tube (1), it is connected with lower clutch (8) to sit cover (7) through sitting and sealing pin (9), during the seat, beat pressure in center tube (1), it upwards moves and drives piston sleeve (5) to sit to seal piston (3) under the pressure effect, locking piece (6) and sitting cover (7) upwards move together, simultaneously cut and sit and seal pin (9), during the deblocking, it is down and with the locking state with locking piece (6) along piston sleeve (3) to sit under the pressure effect that comes from the oil jacket annular space down Remove to realize the deblocking of packer, its characterized in that: the outer side of the setting piston (3) is sleeved with an auxiliary piston (4), a shaft clamp spring (13) used for limiting the lower side of the auxiliary piston (4) is installed on the outer wall of the setting piston (3), a balance hole (12) used for communicating the inner side and the outer side of the setting piston (3) is formed in the side wall of the setting piston (3), the axial position of the balance hole (12) is located between the setting piston (3) and the auxiliary piston (4), when the auxiliary piston (4) slides to an upper limit position along the outer wall of the setting piston (3), the balance hole (12) is still not communicated with the space on the lower side of the auxiliary piston (4), a limiting block (10) is installed on the inner wall of the piston sleeve (5), and the limiting block (10) is installed on the inner wall of the piston sleeve (5) through a screw (11);
the central pipe (1) is provided with a liquid passing hole (14), and the axial position of the liquid passing hole (14) is positioned on the lower side of the auxiliary piston (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920960675.9U CN211230368U (en) | 2019-06-25 | 2019-06-25 | Packer capable of repeatedly setting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920960675.9U CN211230368U (en) | 2019-06-25 | 2019-06-25 | Packer capable of repeatedly setting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211230368U true CN211230368U (en) | 2020-08-11 |
Family
ID=71931474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920960675.9U Expired - Fee Related CN211230368U (en) | 2019-06-25 | 2019-06-25 | Packer capable of repeatedly setting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211230368U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302566A (en) * | 2020-10-27 | 2021-02-02 | 大庆泰泽机械加工有限公司 | Packer for controlling setting of air balance cavity |
| CN113586003A (en) * | 2021-08-31 | 2021-11-02 | 张卫东 | Linkage setting shunting leakage finding tool |
-
2019
- 2019-06-25 CN CN201920960675.9U patent/CN211230368U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302566A (en) * | 2020-10-27 | 2021-02-02 | 大庆泰泽机械加工有限公司 | Packer for controlling setting of air balance cavity |
| CN113586003A (en) * | 2021-08-31 | 2021-11-02 | 张卫东 | Linkage setting shunting leakage finding tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200811 |