CN201661268U - Compensation type pilot-operated water injection packer - Google Patents
Compensation type pilot-operated water injection packer Download PDFInfo
- Publication number
- CN201661268U CN201661268U CN2010200147094U CN201020014709U CN201661268U CN 201661268 U CN201661268 U CN 201661268U CN 2010200147094 U CN2010200147094 U CN 2010200147094U CN 201020014709 U CN201020014709 U CN 201020014709U CN 201661268 U CN201661268 U CN 201661268U
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- CN
- China
- Prior art keywords
- water injection
- packer
- cap
- piston
- slip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a compensation type pilot-operated water injection packer, which comprises an upper adapter, an upper retaining cap, a pilot-operated valve, an adapter sleeve, a rubber barrel, a connecting pipe, a central pipe, a rubber barrel piston, a slip piston, a cylinder sleeve, a slip bowl, an axial slip, a spring, a lower retaining cap and a lower adapter, the slidable connecting pipe is arranged outside the central pipe, the upper retaining cap and the lower retaining cap are respectively screwed on the upper and the lower ends of the connecting pipe, the rubber barrel and a hydraulic anchoring mechanism are arranged outside the middle part of the connecting pipe, and the hydraulic anchoring mechanism comprises the slip piston, the cylinder sleeve, the slip bowl, the axial slip and the spring. The utility model is characterized in that: the expansion and contraction of the rubber barrel of the packer can be hydraulically controlled, meanwhile, the packer has a compensation function, consequently, the rubber barrel of the packer can be prevented from being damaged due to the squirm of a string, and the sealing property of the packer is guaranteed. The utility model is widely applicable to the water injection technique for oil production.
Description
One, technical field
The utility model relates to a kind of oil-field flooding packer, particularly a kind of compensation hydraulic control water injection packer.
Two, background technology
Existing oil-field flooding inflatable packer expands outwardly packing element by the pressure that injects water in the oil pipe usually, realizes the sealing oil casing annular space.But the shortcoming or the deficiency that exist are: (1) water injection well often stops to annotate and recover water filling for some reason, and packing element shrinks, expands easy packing element repeatedly to be reduced application life; (2) packing element normally seals oil casing annular space and during the pressure generation unusual fluctuations of water filling net in the injecting process, water injection string can elongate or shorten and produce wriggling, produce friction shear failure between packing element and the sleeve pipe, cause packer sealing malfunctioning easily, influence the effect of water flooding.
Three, summary of the invention
The purpose of this utility model provides a kind of improved compensation hydraulic control water injection packer, it can be in steady pressure from ground hydraulic control packing element effectively and expand, Seal Oil cover annular space, and can prevent that packer from normally setting the packing element infringement that causes the tubing string wriggling to be brought because of water filling net pressure generation unusual fluctuations under the state, improve packing rubber sleeve application life effectively, guarantee the effect of water flooding.
Compensation hydraulic control water injection packer described in the utility model, by top connection, on keep off cap, pilot operated valve device, adapter sleeve, packing element, tube connector, central tube, packing element piston, slips piston, cylinder sleeve, slip spider, axially slips, spring, keep off cap down, lower contact is formed, central tube is installed slidably tube connector outward, the outer upper and lower end of described tube connector keeps off cap and following retaining cap on the thread connection respectively, outer packing element and the Hydraulic Anchorage mechanism that installs in middle part, it comprises slips piston, cylinder sleeve, slip spider, axial slips and spring.
Wherein, described pilot operated valve device top is provided with screw thread, and inside is provided with cuts off pin; Describedly go up the retaining cap, keep off cap down and be respectively equipped with the pressure transmission hole that connects liquid controling pipe line.
The utility model has the following advantages compared with prior art:
1, packing element adopts ground hydraulic control, is not subjected to water injection well to stop annotating to influence to remain normal effectively sealing state, the application life of improving packer;
2, packer self tool compensate function can prevent that packing element from because of the influence of tubing string wriggling damages, improving the water flooding effect.
Four, description of drawings
Accompanying drawing is the utility model structural representation.
Five, the specific embodiment
Consult accompanying drawing, a kind of compensation hydraulic control water injection packer, comprise central tube 7 and tube connector 6 slidably outward thereof, top connection 1 that central tube 7 upper and lower ends connect respectively and lower contact 15, comprise that also tube connector 6 outer upper and lower ends keep off cap 2 and keep off cap 14 down on the thread connection respectively, outer pilot operated valve device 3, adapter sleeve 4, packing element 5, packing element piston 8, cylinder sleeve 10 and the Hydraulic Anchorage mechanism that installs in middle part, it comprises slips piston 9, slip spider 11, spring 12 and axial slips 13.Tube connector 6 can slide on central tube 7, and sliding distance is greater than the wriggling amount of tubing string in the water injection well.Slips piston 9 adds in the ground hydraulic control to be depressed push card watt seat 11 and moves down, and axially slips 12 outside supporting sleeves prevent wriggling, and packing element 5 expand sealing under ground hydraulic control pressurization simultaneously, and not being subjected to water injection well to stop notes influences and remain normally effective sealing state.When water injection well stopped for some reason to annotate and recovers water filling, water injection string produced wriggling, and central tube is play up and down, and packing element is motionless, realized compensation automatically, prevented the purpose of packing element wriggling.
Claims (3)
1. compensation hydraulic control water injection packer, it is by top connection (1), last retaining cap (2), pilot operated valve device (3), adapter sleeve (4), packing element (5), tube connector (6), central tube (7), packing element piston (8), slips piston (9), cylinder sleeve (10), slip spider (11), spring (12), axial slips (13), under keep off cap (14), lower contact (15) is formed, it is characterized in that: the outer slidably tube connector (6) of installing of described central tube (7), on described tube connector (6) is outer, the lower end keeps off cap (2) and keeps off cap (14) down on the thread connection respectively, the middle part is outer installs packing element (5) and Hydraulic Anchorage mechanism, and it comprises slips piston (9), cylinder sleeve (10), slip spider (11), spring (12) and axial slips (13).
2. compensation hydraulic control water injection packer according to claim 1 is characterized in that described pilot operated valve device (3) top is provided with screw thread, and inside is provided with cuts off pin.
3. compensation hydraulic control water injection packer according to claim 1 and 2 is characterized in that describedly going up retaining cap (2), keeps off cap (14) down and be respectively equipped with the pressure transmission hole that connects liquid controling pipe line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200147094U CN201661268U (en) | 2010-01-05 | 2010-01-05 | Compensation type pilot-operated water injection packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200147094U CN201661268U (en) | 2010-01-05 | 2010-01-05 | Compensation type pilot-operated water injection packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201661268U true CN201661268U (en) | 2010-12-01 |
Family
ID=43231683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200147094U Expired - Fee Related CN201661268U (en) | 2010-01-05 | 2010-01-05 | Compensation type pilot-operated water injection packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201661268U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104695892A (en) * | 2013-12-09 | 2015-06-10 | 中国石油化工股份有限公司 | Independent hydraulic control compression packer |
| CN108222857A (en) * | 2017-04-17 | 2018-06-29 | 中国石油化工股份有限公司 | A kind of injection well pipe column vibration damping abrasionproof compensator and method |
| CN110306948A (en) * | 2019-06-11 | 2019-10-08 | 中国石油大学(北京) | Packer |
| CN110318704A (en) * | 2019-06-20 | 2019-10-11 | 中国石油大学(北京) | Pneumatic packer |
| CN115680551A (en) * | 2021-07-29 | 2023-02-03 | 中国石油天然气股份有限公司 | Load compensation packer |
-
2010
- 2010-01-05 CN CN2010200147094U patent/CN201661268U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104695892A (en) * | 2013-12-09 | 2015-06-10 | 中国石油化工股份有限公司 | Independent hydraulic control compression packer |
| CN104695892B (en) * | 2013-12-09 | 2019-07-05 | 中国石油化工股份有限公司 | A kind of independent hydraulically-controlled type compression packer |
| CN108222857A (en) * | 2017-04-17 | 2018-06-29 | 中国石油化工股份有限公司 | A kind of injection well pipe column vibration damping abrasionproof compensator and method |
| CN108222857B (en) * | 2017-04-17 | 2019-08-20 | 中国石油化工股份有限公司 | A kind of injection well pipe column vibration damping abrasionproof compensator and method |
| CN110306948A (en) * | 2019-06-11 | 2019-10-08 | 中国石油大学(北京) | Packer |
| CN110306948B (en) * | 2019-06-11 | 2020-08-28 | 中国石油大学(北京) | Packer (CN) |
| CN110318704A (en) * | 2019-06-20 | 2019-10-11 | 中国石油大学(北京) | Pneumatic packer |
| CN115680551A (en) * | 2021-07-29 | 2023-02-03 | 中国石油天然气股份有限公司 | Load compensation packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Li Chuizhong Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Li Chuizhong Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20120105 |