CN202467752U - Stepwise deblocking packer - Google Patents
Stepwise deblocking packer Download PDFInfo
- Publication number
- CN202467752U CN202467752U CN2012201284740U CN201220128474U CN202467752U CN 202467752 U CN202467752 U CN 202467752U CN 2012201284740 U CN2012201284740 U CN 2012201284740U CN 201220128474 U CN201220128474 U CN 201220128474U CN 202467752 U CN202467752 U CN 202467752U
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- CN
- China
- Prior art keywords
- central tube
- deblocking
- piston
- packer
- inner central
- 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 stepwise deblocking packer, which consists of an upper joint, a balancing piston, a deblocking pin, an upper jacket, an inner central pipe, a well flushing piston, vulcanized rubber, a steel wire framework, a blocking head, an outer central pipe, an upper rubber barrel, a retainer ring, a middle rubber barrel, a lower rubber barrel, a vulcanized braided fabric, a lower blocking head, a releasing pin, a lower outer pipe, a jump ring, a releasing piston and a lower joint. The rubber barrel of a long rubber barrel packer has the characteristics of large anchoring force, good setting effect, high pressure resistance and freeness from leakage. The balanced stepwise deblocking well flushing packer has the characteristics of directly and separately bearing of deblocking tensile force by every stage of packer and stepwise deblocking, and is simple in structure; and lifting of a pipe column is ensured.
Description
Technical field:
The utility model relates to used downhole tool in the oil recovery field, oil field, is a kind of gradually deblocking packer.
Background technology:
In oil recovery field, oil field, at late high water content period oil well multilayer water breakthrough, the oil-water-layer cross-distribution, interlayer difference is increasing, and therefore further segmentation remains the moisture climbing of control, slows down the main means of successively decreasing.For prevent packer in the course of the work because of last pressure too high or tubing string wriggling cause the packer deblocking promptly since difference force from top to bottom act on the deblocking pin; Field by using strengthen the way of deblocking pin; Make the sealing mechanism of separating of Y341 packer can't deblocking like this; To cause the deblocking failure mechanisms, but reduce the frictional force between packing element and the sleeve pipe by the packing element of grinding away.If the frictional force between packing element and the sleeve pipe is greater than 30t, routine work team can't construct.
The utility model content:
The utility model provides a kind of gradually deblocking packer, and this balance type step-by-step releasable flushing packer has the advantages that every grade of packer directly bears deblocking pulling force, gradually deblocking separately, and is simple in structure, guarantees that tubing string trips out.
The technical scheme of the utility model is: this gradually deblocking packer comprises top connection, and the top connection external screw thread connect to be gone up overcoat, the last overcoat lower end retaining head that is threaded; Top connection 1 below is provided with dummy piston, and dummy piston is fixedly connected with last overcoat through the deblocking pin, and the dummy piston internal thread connects inner central tube; The below of dummy piston is provided with the well-flushing piston between inner central tube and the last overcoat, has inlet opening on the wall of the last overcoat that well-flushing piston lower end is corresponding, reaches inner central tube in the well-flushing piston lower end and is provided with exterior central tube outward; The exterior central tube outer wall is with packing element, back-up ring, middle packing element and lower rubber cylinder successively; The lower rubber cylinder below is provided with down the retaining head, and following retaining head is fixedly connected with lower outer pipe through release pin, is provided with release plunger between lower outer pipe and the inner central tube; Release plunger is provided with jump ring; Have inlet opening on the inner central tube wall of release plunger lower end correspondence, the release plunger below is provided with lower contact, and lower contact is connected with the inner central tube internal thread.
The utlity model has following beneficial effect: the balance type step-by-step releasable flushing packer of the utility model has the advantages that every grade of packer directly bears deblocking pulling force, gradually deblocking separately, and is simple in structure, guarantees that tubing string trips out about upper lifting force 200KN.The process of sulfuration yarn fabric packer shoulder protection packing element and Water well packer well-flushing piston structure are worn metal steel wire, vulcanized rubber, well-flushing feed pathway employing slotting process then in groove in the packing element of limit, the perfect performance of packing element.245 mouthfuls of wells of The field, 5.9 grades of average individual wells, depth is 1050 meters under the tubing string, sealing effectiveness 100%, 67 mouthfuls of wells of deblocking successively, a deblocking success rate 100%.
Description of drawings:
Accompanying drawing 1 is the structure sectional view of the utility model.
Among the figure 1, top connection; 2, dummy piston; 3, deblocking pin; 4, go up overcoat; 5, inner central tube; 6, well-flushing piston; 7, vulcanized rubber; 8, steel-wire carcass; 9, retaining head; 10, exterior central tube; 11, go up packing element; 12, back-up ring; 13, middle packing element; 14, lower rubber cylinder; 15, sulfuration braid; 16, keep off head down; 17, release pin; 18, lower outer pipe; 19, jump ring; 20, release plunger; 21, lower contact.
The specific embodiment:
Below in conjunction with accompanying drawing the utility model is described further:
As shown in Figure 1, this gradually deblocking packer comprises top connection 1, and described top connection 1 external screw thread connects goes up overcoat 4; The last overcoat 4 lower ends retaining 9 that is threaded, top connection 1 below is provided with dummy piston 2, and dummy piston 2 is fixedly connected with last overcoat 4 through deblocking pin 3; Dummy piston 2 internal threads connect inner central tube 5, and the below of dummy piston 2 is provided with well-flushing piston 6 between inner central tube 5 and the last overcoat 4, are axial slot on the wall of the last overcoat 4 that well-flushing piston 6 lower ends are corresponding; The well-flushing feed pathway adopts slotting process to solve the problem that particulate contamination obstruction valve is closed behind the well-flushing; Be provided with exterior central tube 10 in well-flushing piston 6 lower ends and outside the inner central tube 5, exterior central tube 10 outer walls are with packing element 11, back-up ring 12, middle packing element 13 and lower rubber cylinder 14 successively, and packing element is extruded packer setting; Lower rubber cylinder 14 belows are provided with down retaining 16; Following retaining 16 is fixedly connected with lower outer pipe 18 through release pin 17, is provided with release plunger 20 between lower outer pipe 18 and the inner central tube 5, and release plunger 20 is provided with jump ring 19; The profile of tooth of lower outer pipe 18 upper end inwalls for matching with jump ring 19; Have inlet opening on inner central tube 5 walls of release plunger 20 lower ends correspondence, release plunger 20 belows are provided with lower contact 21, and lower contact 21 is connected with inner central tube 5 internal threads.
Well-flushing piston 6 lower end inwalls are vulcanized rubber 7, are provided with steel-wire carcass 8 in the vulcanized rubber 7.The as a whole structure of well-flushing piston behind the vulcanized rubber prevents that the packer well-washing piston from being stung damage and non-homing causes the packing less problem of packer.And the well-flushing piston radially can seal under the situation that does not hold out against axial end.
The upper and lower side inwall of last packing element 11 and lower rubber cylinder 14 is respectively equipped with sulfuration braid 15.The sulfuration braid is used for the shoulder protection of packing element in the packing element of limit.Braid is polyamide fibre 66 lines or other braids, and sulfuration process is polyamide fibre 66 lines or other braid kiss-coatings, and use bonding adhesive and rubber in layer bonding forming are about 1/3 packing element after cure moulding, and then become the single-piece packing element with the vulcanization of rubber.
During use, oil pipe is just being suppressed the 5MPa initial release, and release plunger 20 promotions keep off packing element 11, middle packing element 13, lower rubber cylinder 14 on the 16 up compression packer down, reach 15MPa and discharge completion, and the jump ring that while jump ring 19 is locked in lower outer pipe 18 hangs up; When packer discharges; Because the packer bottom is acted on the deblocking pin 3 through inner central tube 5, dummy piston 2 by the downward piston force 122KN that lower contact 21 forms; This moment, dummy piston 2 meetings produced the equilibrant force of 61.2KN; Add the resistance to tension of the 70KN of deblocking pin 3, offset piston force 122KN, when guaranteeing that packer discharges not by deblocking; Upper lifting pipe post deblocking; The upper lifting force of upper level packer acts on the deblocking pin 3 through top connection 1 and last overcoat 4; If deblocking pin 3 adds that with lower tubular column weight the frictional force of packing element and casing wall is no more than the resistance to tension of the 70KN of deblocking pin 3; Tubing string can allow to be tripped out under tubing string suspending weight+70KN load at working rig, roughly about upper lifting force 200KN, if deblocking pin 3 adds that with lower tubular column weight the frictional force of packing element and casing wall surpasses the resistance to tension of the 70KN of deblocking pin 3; Deblocking pin 3 is broken; Top connection 1, go up overcoat 4, retaining 9 and throw off, spacing being disengaged of upper level packer packing element, upper level packer deblocking with inner central tube 5; And the like, the second level, the third level---, last tubing string is guaranteed to trip out carrying haply under solenoid post suspending weight+70KN load.If movable repeatedly tubing string, with all packer deblockings, the tubing string upper lifting force equals suspending weight.
Claims (3)
1. gradually deblocking packer; Comprise top connection (1), it is characterized in that: described top connection (1) external screw thread connects goes up overcoat (4), and last overcoat (4) lower end is threaded and keeps off head (9); Top connection (1) below is provided with dummy piston (2); Dummy piston (2) is fixedly connected with last overcoat (4) through deblocking pin (3), and dummy piston (2) internal thread connects inner central tube (5), and the below of dummy piston (2) is provided with well-flushing piston (6) between inner central tube (5) and the last overcoat (4); On the wall of the last overcoat (4) that well-flushing piston (6) lower end is corresponding is axial slot; Be provided with exterior central tube (10) in well-flushing piston (6) lower end and outside the inner central tube (5), exterior central tube (10) outer wall is with packing element (11), back-up ring (12), middle packing element (13) and lower rubber cylinder (14) successively, and lower rubber cylinder (14) below is provided with down retaining head (16); Following retaining head (16) is fixedly connected with lower outer pipe (18) through release pin (17); Be provided with release plunger (20) between lower outer pipe (18) and the inner central tube (5), release plunger (20) is provided with jump ring (19), has inlet opening on inner central tube (5) wall of release plunger (20) lower end correspondence; Release plunger (20) below is provided with lower contact (21), and lower contact (21) is connected with inner central tube (5) internal thread.
2. gradually deblocking packer according to claim 1 is characterized in that: well-flushing piston (6) lower end inwall is vulcanized rubber (7), is provided with steel-wire carcass (8) in the vulcanized rubber (7).
3. gradually deblocking packer according to claim 2 is characterized in that: the upper and lower side inwall of going up packing element (11) and lower rubber cylinder (14) is respectively equipped with sulfuration braid (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201284740U CN202467752U (en) | 2012-03-28 | 2012-03-28 | Stepwise deblocking packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201284740U CN202467752U (en) | 2012-03-28 | 2012-03-28 | Stepwise deblocking packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202467752U true CN202467752U (en) | 2012-10-03 |
Family
ID=46915917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201284740U Expired - Fee Related CN202467752U (en) | 2012-03-28 | 2012-03-28 | Stepwise deblocking packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202467752U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121581A (en) * | 2016-07-31 | 2016-11-16 | 辽宁新华仪器有限公司 | Pony packer |
| CN110424920A (en) * | 2019-08-27 | 2019-11-08 | 大庆吉庆雨科技开发有限公司 | A kind of self expandable anti-scaling water injection packer |
| CN114941512A (en) * | 2022-04-19 | 2022-08-26 | 阜宁县宏达石化机械有限公司 | Step-by-step deblocking washable well packer |
-
2012
- 2012-03-28 CN CN2012201284740U patent/CN202467752U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121581A (en) * | 2016-07-31 | 2016-11-16 | 辽宁新华仪器有限公司 | Pony packer |
| CN110424920A (en) * | 2019-08-27 | 2019-11-08 | 大庆吉庆雨科技开发有限公司 | A kind of self expandable anti-scaling water injection packer |
| CN110424920B (en) * | 2019-08-27 | 2024-01-30 | 大庆吉庆雨科技开发有限公司 | Self-expanding antiscaling water injection packer |
| CN114941512A (en) * | 2022-04-19 | 2022-08-26 | 阜宁县宏达石化机械有限公司 | Step-by-step deblocking washable well packer |
| CN114941512B (en) * | 2022-04-19 | 2023-10-03 | 阜宁县宏达石化机械有限公司 | Step-by-step deblocking well cleanable 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: Mao Yuanhong 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: 20121003 Termination date: 20140328 |