CN201991481U - Small-force deblocking packer for flooding well - Google Patents
Small-force deblocking packer for flooding well Download PDFInfo
- Publication number
- CN201991481U CN201991481U CN2011200435221U CN201120043522U CN201991481U CN 201991481 U CN201991481 U CN 201991481U CN 2011200435221 U CN2011200435221 U CN 2011200435221U CN 201120043522 U CN201120043522 U CN 201120043522U CN 201991481 U CN201991481 U CN 201991481U
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- deblocking
- sleeve
- packing element
- central tube
- packer
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Abstract
The utility model discloses a small-force deblocking packer for a flooding well, which is mainly used for solving the problems of large deblocking force, stage limit and easy clamping during overhauling operation of the conventional multi-stage packer. The small-force deblocking packer is characterized in that: a rubber barrel sliding bush (9) is arranged in a rubber barrel (15), and is connected with an outer central pipe (8) outside a central pipe (1); a connecting block (15) is connected outside the lower end of the outer central pipe (8); the upper end of the connecting block (15) is connected with a seat packing piston (7) through a seat packing pin (16); the upper end of the seat packing piston (7) is pressed against the lower end of a rubber barrel pushing sleeve (11); the lower end of the connecting block (15) is connected with a snap spring seat (17) through a seat packing ball; a snap spring (6) is arranged between the step of the snap spring seat (17) and the connecting block (15); and the inner side of the snap spring seat (17) is connected with a deblocking middle sleeve (5) through a deblocking pin (18). The small-force deblocking packer for the flooding well has the characteristics of no limit by the stages of an underground packer, small deblocking force, good sealing effect and avoidance of an unblocking operation phenomenon during overhauling.
Description
Technical field
The utility model relates to the low power deblocking packer of oil recovery field, oil field water injection well used packer, especially water injection well.
Background technology
At oil recovery field, oil field water injection well,, need each oil reservoir packing be come with packer for satisfying the demand of oil field multistage subdivision injection.And the packer that existing separate water injection well adopts is a hydraulic compression type packer.During deblocking, owing to be " parallel connection " deblocking mode, make the increase of deblocking power, thereby the packer progression that connects on the tubing string is restricted, and easily blocks during heavy repair task, difficulty satisfies the deblocking workload demand.
Summary of the invention
Big in order to solve existing multiple-string packer deblocking power, the progression restriction, heavy repair task is the problem of card easily.The utility model provides a kind of water injection well to hang down the power deblocking packer.The low power deblocking packer of this water injection well has and not limited by downhole packer progression, and deblocking power is little, and good sealing effect is avoided the characteristics of the generation of overhaul unfreezing operation phenomenon.
The technical solution of the utility model is: the low power deblocking packer of this water injection well comprises cover, jump ring in central tube, lower contact, lower joint sleeve, lock sleeve, the deblocking, sets piston, exterior central tube, packing element sliding sleeve, balance one way valve, packing element pushing sleeve and packing element spacer ring.There is the packing element pushing sleeve packing element spacer ring lower end, axially be provided with the balance one way valve between packing element pushing sleeve and the exterior central tube, packing element pushing sleeve lower end is externally connected with lock sleeve, annular boss is arranged in the lock sleeve, lower contact is equipped with lower joint sleeve outward in the lock sleeve lower end, be connected with central tube in the lower joint sleeve upper end, the lower joint sleeve lower end have with central tube in the inlet opening that is communicated with; The packing element sliding sleeve places in the packing element and with central tube exterior central tube outward and is connected, the exterior central tube lower end is externally connected with contiguous block, contiguous block upper end is connected with and sets piston by setting pin, set the piston upper end and peak at packing element pushing sleeve lower end, the contiguous block lower end is connected with clip spring seat by setting ball, be equipped with jump ring between clip spring seat stage and the contiguous block, the clip spring seat inboard is connected with in the deblocking by the deblocking pin to be overlapped.
The utlity model has following beneficial effect: the low power deblocking packer of this water injection well mainly improves setting mechanism on existing packer basis, changes " parallel connection " deblocking mode of former packer into " series connection " deblocking mode.Adopt the exterior central tube lower end to be externally connected with contiguous block, contiguous block upper end is connected with and sets piston by setting pin, set the piston upper end and peak at packing element pushing sleeve lower end, the contiguous block lower end is connected with clip spring seat by setting ball, be equipped with jump ring between clip spring seat stage and the contiguous block, the clip spring seat inboard is connected with the structure of overlapping in the deblocking by the deblocking pin.Put on joint in the utilization, it is up to drive central tube and lower joint sleeve, and cover is up in the promotion deblocking, and the deblocking pin is cut off, and setting ball loses constraint, and lock sleeve and jump ring are descending, and packing element discharges.Thereby it is little to reduce deblocking power, downhole packer progression is unrestricted, and avoids the generation of overhaul unfreezing operation phenomenon, improves sealing effectiveness, well solved the difficult problem of water injection well segmentation back packer deblocking, for the meticulous water drive exploitation in oil field provides strong technical support.The low power deblocking packer of this water injection well has and not limited by downhole packer progression thus, and deblocking power is little, the characteristics of good sealing effect.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is Fig. 1 substructure schematic diagrames.
1-central tube among the figure, 2-lower contact, 3-lower joint sleeve, the 4-lock sleeve overlaps in the 5-deblocking, the 6-jump ring, 7-sets piston, 8-exterior central tube, 9-packing element sliding sleeve, 10-balance one way valve, 11-packing element pushing sleeve, 12-packing element spacer ring, the 13-boss, 14-inlet opening, 15-contiguous block, 16-sets pin, 17-clip spring seat, 18-deblocking pin.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 1, the low power deblocking packer of this water injection well comprises and overlaps 5 in central tube 1, lower contact 2, lower joint sleeve 3, lock sleeve 4, the deblocking, jump ring 6, sets piston 7, exterior central tube 8, packing element sliding sleeve 9, balance one way valve 10, packing element pushing sleeve 11 and packing element spacer ring 12.There is packing element pushing sleeve 11 packing element spacer ring 12 lower ends, and packing element pushing sleeve 11 lower ends withstand on and set piston 7 upper ends, promote packing element pushing sleeve 11 by setting piston 7, and packing element pushing sleeve 11 is realized setting by packing element spacer ring 12 compression packing elements.Axially be provided with balance one way valve 10 between packing element pushing sleeve 11 and the exterior central tube 8, balance one way valve 10 is by valve seat, spool and back-moving spring, and the valve seat upper and lower side has outlet, by balance one way valve 10 balance inside and outside differential pressures, reduces to set resistance.Packing element pushing sleeve 11 lower ends are externally connected with lock sleeve 4, and lock sleeve 4 is a tubulose, and there is annular boss 13 at interior middle part, and jump ring 6 and lock sleeve 4 are for setting retaining mechanism, play the effect that sets locking.Lower contact 2 is outer in lock sleeve 4 lower ends is equipped with lower joint sleeve 3, and lower joint sleeve 3 is a tubulose, in two stage steps is arranged, inlet opening 14 is axially arranged on the top wall, and with central tube 1 in be connected.Be connected with central tube 1 by screw thread in lower joint sleeve 3 upper ends.Packing element sliding sleeve 9 places in the packing element, be connected with exterior central tube 8 in packing element sliding sleeve 9 upper ends, outside the exterior central tube 8 centering pipes 1, exterior central tube 8 lower ends are externally connected with contiguous block 15, contiguous block 15 is a tubulose, inside and outside step respectively, the outer step in upper end is connected with and sets piston 7 by setting pin 16, set piston 7 upper ends and peak at packing element pushing sleeve 11 lower ends, step is connected with clip spring seat 17 by setting ball in contiguous block 15 lower ends, inside and outside clip spring seat 17 upper and lower sides stage is arranged respectively, outside the lower end between stage and the contiguous block 15 clamping jump ring 6 is arranged, in clip spring seat 17 upper end inner steps and the deblocking outside cover 5 upper ends stage match, and by 18 connections of deblocking pin, cover 5 stops contiguous block 15 to be connected in the setting ball with clip spring seat 17 in the deblocking simultaneously, and the constraint setting ball guarantees the reliability that sets.
" parallel connection " deblocking mode that the low power deblocking packer of this water injection well will have packer now changes " series connection " deblocking mode into.When setting, pressurize in oil pipe, hydraulic pressure acts on through central tube 1 and inlet opening 14 and sets on the piston 7, setting pin 16 is cut off, set piston 7 up compression packing element packing oil jacket annular spaces, this moment, lock sleeve 4 was uply blocked by boss 13 by jump ring 6, made packer in running order; During deblocking, on put on joint, it is up with lower joint sleeve 3 to drive central tube 1, it is up to promote in the deblocking cover 5, deblocking pin 18 is cut off, setting ball loses constraint, lock sleeve 4 is descending with jump ring 6, packing element discharges, whole deblocking process is finished.Single-stage deblocking power is designed to 20KN, when on the power of lifting reach 110KN, behind the tubing string weight 100KN, packer begins gradually deblocking, thereby the low power deblocking characteristic that not limited by progression, can satisfy the seperated layer water injection requirement of water injection well more than 7 sections, well solve the difficult problem of water injection well segmentation back packer deblocking, for the meticulous water drive exploitation in oil field provides strong technical support.
The low power deblocking packer of this water injection well passes through 2 mouthfuls of well field trials, after the release, and water filling 24 hours, well-flushing is tested the involution lattice, has carried out 1 mouthful of aboveground deblocking of carrying afterwards, and field trial deblocking power is 108KN, test has reached designing requirement, can satisfy deblocking demand more than 7 grades.
Claims (1)
1. a water injection well hangs down the power deblocking packer, comprise central tube (1), lower contact (2), lower joint sleeve (3), lock sleeve (4), cover (5) in the deblocking, jump ring (6), set piston (7), exterior central tube (8), packing element sliding sleeve (9), balance one way valve (10), packing element pushing sleeve (11) and packing element spacer ring (12), it is characterized in that: there is packing element pushing sleeve (11) packing element spacer ring (12) lower end, axially be provided with balance one way valve (10) between packing element pushing sleeve (11) and the exterior central tube (8), packing element pushing sleeve (11) lower end is externally connected with lock sleeve (4), annular boss (13) is arranged in the lock sleeve (4), the outer lower joint sleeve (3) that is equipped with of lower contact (2) in lock sleeve (4) lower end, lower joint sleeve (3) is connected with central tube (1) in the upper end, and lower joint sleeve (3) lower end has and the interior inlet opening (14) that is communicated with of central tube (1); Packing element sliding sleeve (9) places in the packing element (15) and with central tube (1) exterior central tube (8) outward and is connected, exterior central tube (8) lower end is externally connected with contiguous block (15), contiguous block (15) upper end is connected with and sets piston (7) by setting pin (16), set piston (7) upper end and peak at packing element pushing sleeve (11) lower end, contiguous block (15) lower end is connected with clip spring seat (17) by setting ball, be equipped with jump ring (6) between clip spring seat (17) stage and the contiguous block (15), clip spring seat (17) is inboard to be connected with cover (5) in the deblocking by deblocking pin (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200435221U CN201991481U (en) | 2011-02-22 | 2011-02-22 | Small-force deblocking packer for flooding well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200435221U CN201991481U (en) | 2011-02-22 | 2011-02-22 | Small-force deblocking packer for flooding well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201991481U true CN201991481U (en) | 2011-09-28 |
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ID=44667971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200435221U Expired - Fee Related CN201991481U (en) | 2011-02-22 | 2011-02-22 | Small-force deblocking packer for flooding well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201991481U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775022A (en) * | 2014-02-25 | 2014-05-07 | 荆州市翔龙石油科技有限公司 | Multifunctional packer capable of resealing under lower pressure after sealing under high pressure for the first time |
| CN110439501A (en) * | 2019-09-25 | 2019-11-12 | 辽宁新华仪器有限公司 | Small deblocking power packer |
-
2011
- 2011-02-22 CN CN2011200435221U patent/CN201991481U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775022A (en) * | 2014-02-25 | 2014-05-07 | 荆州市翔龙石油科技有限公司 | Multifunctional packer capable of resealing under lower pressure after sealing under high pressure for the first time |
| CN103775022B (en) * | 2014-02-25 | 2015-12-16 | 荆州市翔龙石油科技有限公司 | Can the Multifunction packer of low pressure restting after a kind of high pressure first sets |
| CN110439501A (en) * | 2019-09-25 | 2019-11-12 | 辽宁新华仪器有限公司 | Small deblocking power packer |
| CN110439501B (en) * | 2019-09-25 | 2024-06-25 | 辽宁新华仪器有限公司 | Small Jie Fengli 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: 20110928 Termination date: 20200222 |