CN203420663U - Water injection well step-by-step deblocking packer - Google Patents
Water injection well step-by-step deblocking packer Download PDFInfo
- Publication number
- CN203420663U CN203420663U CN201320499627.7U CN201320499627U CN203420663U CN 203420663 U CN203420663 U CN 203420663U CN 201320499627 U CN201320499627 U CN 201320499627U CN 203420663 U CN203420663 U CN 203420663U
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- China
- Prior art keywords
- packer
- deblocking
- piston
- lock
- shear pin
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- Expired - Fee Related
Links
- 238000002347 injection Methods 0.000 title claims abstract description 18
- 239000007924 injection Substances 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 18
- 238000012856 packing Methods 0.000 claims description 13
- 239000003292 glue Substances 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 5
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000011001 backwashing Methods 0.000 abstract 3
- 210000000078 claw Anatomy 0.000 abstract 3
- 230000001681 protective effect Effects 0.000 abstract 1
- 238000011010 flushing procedure Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model discloses a water injection well deblocking packer step by step is designed for realizing that multistage packer is from last to the purpose of deblocking in proper order down. The upper end and the lower end of a central pipe of the packer are respectively connected with a joint, a lock finger claw, a lock sleeve, an outer central pipe, a backwashing piston, a spring and a gasket are sleeved on the central pipe, a rubber cylinder seat, each rubber cylinder and a protective bowl are sleeved on the outer central pipe, the lock finger claw and the upper rubber cylinder seat are connected with the upper end and the lower end of the backwashing sleeve, the upper end and the lower end of the upper outer sleeve are connected with an upper joint and a backwashing sleeve, the lower end of the upper piston sleeve is connected with a lower rubber cylinder seat and a lower piston sleeve, and the lower piston. The packer adopts the locking finger claw to be locked with the locking sleeve in a matching way, so that the packer can be effectively prevented from losing efficacy under the pressure fluctuation of water injection after being set and sealed, and the separate injection effect is ensured. The deblocking shear pins with the diameter smaller than that of the conventional shear pins are adopted, deblocking is carried out on each packer from top to bottom with 30-40KN deblocking force, the deblocking load superposition of a multilayer separate injection well can be overcome, the operation risk is reduced, the reliability of a separate layer water injection process is guaranteed, and the construction quality is improved.
Description
Technical field
The utility model relates to a kind of water injection well gradually deblocking packer, belongs to water injection well for oil technical field.
Background technology
At present, Y341 well packer capable of flushing well can only meet the requirement of the two-layer separate layer water injection string in oil field substantially, and depositing is used multiple-string packer.When the operation of multistage water injection inspection string, a plurality of packers need a deblocking, and the deblocking power of each packer is 5-6 ton, three deblocking power with upper packer need more than 18 tons, add tubing string self gravitation, will approach 30 tons of ultimate tensions of workover rig, site operation risk is larger.
Summary of the invention
The purpose of this utility model is to provide a kind of water injection well gradually deblocking packer, to realize the multiple-string packer object of deblocking successively from top to bottom.
Concrete technology contents of the present utility model is as follows:
Central tube upper external screw thread connects top connection and is sealed by the first sealing ring, and lower end external screw thread is connected with the adapter of pressure guide hole, and adapter bottom external screw thread connects lower contact;
Outer wall cover has lock paw, lock tube, exterior central tube, backwash piston, spring and the pad of lock ring to be enclosed within successively on central tube from top to bottom, and lower piston is enclosed within on adapter; Exterior central tube upper external screw thread connects lock tube, and on exterior central tube, from top to bottom suit is with upper glue tube base, spacer ring, middle packing element, limit packing element, protection bowl and the lower rubber cylinder seat of the second sealing ring successively, and exterior central tube bottom is supported on the interior step of lower rubber cylinder seat; T-shaped circle, stop collar and pressure cap are equipped with in the upper end that is provided with the backwash piston of the 3rd sealing ring and the 4th sealing ring; Shear pin seat is connected lower contact with anticollision ring internal thread;
The backwash set upper side internal thread that is provided with through hole connects lock paw, and lower end internal thread connects upper glue tube base; Upper outside set upper side internal thread connects top connection, and lower end is fixing by deblocking shear pin and backwash cover, and deblocking shear pin diameter is 80% of conventional shear pin diameter; The upper piston set upper side internal thread that is provided with fluid hole connects lower rubber cylinder seat, and lower end internal thread connects lower piston cover, and lower piston cover is fixed by setting shear pin and shear pin seat.
This packer adopts lock paw and lock tube to lock, and can effectively prevent under water injection pressure fluctuation, losing efficacy after packer setting, guarantees dispensing effect.Employing is less than the deblocking shear pin of conventional shear pin diameter, with 30-40KN deblocking power, from top to bottom each packer is carried out to deblocking, can effectively overcome the deblocking load stack of depositing well, reduce operating risk, guarantee the reliability of stratified injection water technology, improve construction quality.
Accompanying drawing explanation
Fig. 1 is water injection well gradually deblocking packer superstructure schematic diagram.
Fig. 2 is water injection well gradually deblocking packer central structure schematic diagram.
Fig. 3 is water injection well gradually deblocking packer substructure schematic diagram.
The specific embodiment
Embodiment:
Referring to figs. 1 through 3 couples of embodiment of the present utility model, further illustrate:
This packer comprises top connection 1, central tube 2, the first sealing ring 3, upper overcoat 4, lock paw 5, deblocking shear pin 6, backwash cover 7, lock ring 8, lock tube 9, upper glue tube base 10, the second sealing ring 11, exterior central tube 12, spacer ring 13, middle packing element 14, limit packing element 15, protection bowl 16, lower rubber cylinder seat 17, upper piston cover 18, stop collar 19, T-shaped circle 20, pressure cap 21, backwash piston 22, the 3rd sealing ring 23, the 4th sealing ring 24, spring 25, pad 26, adapter 27, lower piston 28, lower contact 29, lower piston cover 30, set shear pin 31, shear pin seat 32 and anticollision ring 33:
Central tube 2 upper external screw threads connect top connection 1 and by the first sealing ring 3 sealings, lower end external screw thread is connected with the adapter 27 of pressure guide hole, and adapter 27 bottom external screw threads connect lower contact 29;
Outer wall cover has lock paw 5, lock tube 9, exterior central tube 12, backwash piston 22, spring 25 and the pad 26 of lock ring 8 to be enclosed within successively on central tube 2 from top to bottom, and lower piston 28 is enclosed within on adapter 27; Exterior central tube 12 upper external screw threads connect lock tube 9, on exterior central tube 12, from top to bottom suit is with upper glue tube base 10, spacer ring 13, middle packing element 14, limit packing element 15, protection bowl 16 and the lower rubber cylinder seat 17 of the second sealing ring 11 successively, and exterior central tube 12 bottoms are supported on the interior step of lower rubber cylinder seat 17; T-shaped circle 20, stop collar 19 and pressure cap 21 are equipped with in the upper end that is provided with the backwash piston 22 of the 3rd sealing ring 23 and the 4th sealing ring 24; Shear pin seat 32 is connected lower contact 29 with anticollision ring 33 internal threads;
7 upper end internal threads connection lock paws 5 are overlapped in the backwash that is provided with through hole, and lower end internal thread connects upper glue tube base 10; Upper overcoat 4 upper end internal threads connect top connection 1, and lower end is fixing with backwash cover 7 by deblocking shear pin 6, and deblocking shear pin 6 diameters are 80% of conventional shear pin diameter; The upper piston that is provided with fluid hole overlaps 18 upper end internal threads and connects lower rubber cylinder seat 17, and lower end internal thread connects lower piston cover 30, and lower piston cover 30 is fixing with shear pin seat 32 by setting shear pin 31.
The operating principle of this packer is as follows:
1, set: this packer is hydraulic compression type packer, in the process of going into the well, lock tube 9 and lock paw 5 separately, set shear pin 31 and anticollision ring 33 and can guarantee that packer can not set with sleeve pipe collision midway in backwash cover 7.When this packer is lowered to desired depth, the fluid under pressure injecting from oil pipe flows into along central tube 2, through adapter 27 lower end pressure guide holes, enters.Hydraulic action is on lower piston 28, promoting lower piston overlaps 30 up, cut off setting shear pin 31, promote upper piston cover 18 and lower rubber cylinder seat 17 up, compression limit packing element 15 and middle packing element 14 promote exterior central tube 12 simultaneously and lock tube 9 is up, until lock tube 9 entangles lock paw 5, by lock ring 8, locked, realize the packer setting of anti-rebound formula.
2, anti-flushing well: liquid overlaps 7 through holes from backwash and enters, through central tube 2 and 12 annular spaces promotion backwash piston 22 Compress Springs 25 of exterior central tube, move downward, make the annular space of 12 of central tube 2 and exterior central tubes be communicated with upper piston and overlap 18 fluid holes, form flow channels, realize anti-flushing well.After well-flushing completes, under spring 25 effects, backwash piston 22 moves upward, and promotes the T-shaped circle 20 on pressure cap 21 extruding stop collars 19, realizes the sealing of 17 of backwash piston 22 and lower rubber cylinder seats, thereby closes well-flushing passage.
3, deblocking: upper lifting pipe post, in top connection 1, move, drive on central tube 2 and upper overcoat 4 and move, cut off deblocking shear pin 6, limit packing element 15 and middle packing element 14 friction sleeve pipes; On central tube 2, move, make to lock paw 5 and lose the strong point with lock ring 8, the two separation, each packing element reclaims under self elastic force effect, realizes removing seal for packer.
Claims (1)
1. a water injection well gradually deblocking packer, is characterized in that:
This packer central tube (2) upper external screw thread connects top connection (1) and is sealed by the first sealing ring (3), lower end external screw thread is connected with the adapter (27) of pressure guide hole, and adapter (27) bottom external screw thread connects lower contact (29);
It is upper that outer wall cover has lock paw (5), lock tube (9), exterior central tube (12), backwash piston (22), spring (25) and the pad (26) of lock ring (8) to be enclosed within successively central tube (2) from top to bottom, and lower piston (28) is enclosed within on adapter (27); Exterior central tube (12) upper external screw thread connects lock tube (9), on exterior central tube (12), from top to bottom suit is with upper glue tube base (10), spacer ring (13), middle packing element (14), limit packing element (15), protection bowl (16) and the lower rubber cylinder seat (17) of the second sealing ring (11) successively, and exterior central tube (12) bottom is supported on the interior step of lower rubber cylinder seat (17); T-shaped circle (20), stop collar (19) and pressure cap (21) are equipped with in the upper end that is provided with the backwash piston (22) of the 3rd sealing ring (23) and the 4th sealing ring (24); Shear pin seat (32) is connected lower contact (29) with anticollision ring (33) internal thread;
Backwash cover (7) the upper end internal thread that is provided with through hole connects lock paw (5), and lower end internal thread connects upper glue tube base (10); Upper overcoat (4) upper end internal thread connects top connection (1), and lower end is fixing by deblocking shear pin (6) and backwash cover (7), and deblocking shear pin (6) diameter is 80% of conventional shear pin diameter; Upper piston cover (18) the upper end internal thread that is provided with fluid hole connects lower rubber cylinder seat (17), and lower end internal thread connects lower piston cover (30), and lower piston cover (30) is fixing by setting shear pin (31) and shear pin seat (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320499627.7U CN203420663U (en) | 2013-08-15 | 2013-08-15 | Water injection well step-by-step deblocking packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320499627.7U CN203420663U (en) | 2013-08-15 | 2013-08-15 | Water injection well step-by-step deblocking packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203420663U true CN203420663U (en) | 2014-02-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320499627.7U Expired - Fee Related CN203420663U (en) | 2013-08-15 | 2013-08-15 | Water injection well step-by-step deblocking packer |
Country Status (1)
| Country | Link |
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| CN (1) | CN203420663U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835675A (en) * | 2014-03-18 | 2014-06-04 | 四机赛瓦石油钻采设备有限公司 | Long-rubber-sleeve compression type open hole packer |
| CN104373074A (en) * | 2013-08-15 | 2015-02-25 | 中国石油天然气股份有限公司 | Water injection well step-by-step deblocking packer |
| CN105756608A (en) * | 2014-12-16 | 2016-07-13 | 中国石油天然气股份有限公司 | Packer capable of being unsealed step by step |
| CN107091058A (en) * | 2017-07-04 | 2017-08-25 | 唐山冀东石油机械有限责任公司 | The hydraulic control that moment of torsion can be transmitted starts formula telescoping tube |
| CN110331958A (en) * | 2019-06-12 | 2019-10-15 | 中国石油化工股份有限公司 | A kind of water injection packer |
-
2013
- 2013-08-15 CN CN201320499627.7U patent/CN203420663U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373074A (en) * | 2013-08-15 | 2015-02-25 | 中国石油天然气股份有限公司 | Water injection well step-by-step deblocking packer |
| CN103835675A (en) * | 2014-03-18 | 2014-06-04 | 四机赛瓦石油钻采设备有限公司 | Long-rubber-sleeve compression type open hole packer |
| CN103835675B (en) * | 2014-03-18 | 2017-01-25 | 四机赛瓦石油钻采设备有限公司 | Long-rubber-sleeve compression type open hole packer |
| CN105756608A (en) * | 2014-12-16 | 2016-07-13 | 中国石油天然气股份有限公司 | Packer capable of being unsealed step by step |
| CN105756608B (en) * | 2014-12-16 | 2018-11-16 | 中国石油天然气股份有限公司 | Packer capable of being unsealed step by step |
| CN107091058A (en) * | 2017-07-04 | 2017-08-25 | 唐山冀东石油机械有限责任公司 | The hydraulic control that moment of torsion can be transmitted starts formula telescoping tube |
| CN107091058B (en) * | 2017-07-04 | 2023-09-15 | 唐山冀东石油机械有限责任公司 | Hydraulic control starting telescopic pipe capable of transmitting torque |
| CN110331958A (en) * | 2019-06-12 | 2019-10-15 | 中国石油化工股份有限公司 | A kind of water injection packer |
| CN110331958B (en) * | 2019-06-12 | 2021-08-13 | 中国石油化工股份有限公司 | Water injection packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20140205 Termination date: 20210815 |