CN202882818U - Self-seal-examining screen pipe hanger - Google Patents
Self-seal-examining screen pipe hanger Download PDFInfo
- Publication number
- CN202882818U CN202882818U CN2012205503535U CN201220550353U CN202882818U CN 202882818 U CN202882818 U CN 202882818U CN 2012205503535 U CN2012205503535 U CN 2012205503535U CN 201220550353 U CN201220550353 U CN 201220550353U CN 202882818 U CN202882818 U CN 202882818U
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- rubber cylinder
- envelope
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Abstract
The utility model discloses a self-seal-examining screen pipe hanger which is suitable for hanging a screen pipe in an oil well mechanical sand prevention technology. The self-seal-examining screen pipe hanger comprises an upper connector (1), a center pipe (26), a releasing mechanism (41), an upper sealing rubber cylinder (8), a lower sealing rubber cylinder (16), a locking mechanism (39), an anchoring mechanism (38) and an unsealing mechanism (37). A seal-examining mechanism (40) is arranged between the upper sealing rubber cylinder (8) and the lower sealing rubber cylinder (16). The seal-examining mechanism (40) is sleeved on the center pipe (26). When the hanger goes down to a designed well depth along with an oil pipe, the hanger is sealed in a setting mode by pressing, after the hanger is sealed in the setting mode, pressing is carried out continuously, when pressure is raised to a certain value, a seal-examining shear pin (13) is sheared off, a seal-examining piston (12) is driven to go downwards through hydraulic pressure, liquid enters into an annular cavity formed by the lower sealing rubber cylinder (16), the upper sealing rubber cylinder (8) and a sleeve through a first seal-examining hole (14) in the center pipe (26) and a second seal-examining hole (11) in a seal-examining sleeve (10), whether the seal of the upper sealing rubber cylinder (8) and the lower sealing rubber cylinder (16) is qualified can be judged through ground pressure drop, and successful rate of the mechanical sand prevention technology is greatly improved.
Description
Technical field
The utility model relates to a kind of from testing the envelope screen pipe hanger, is applicable to the suspension of screen casing in the oil machinery sand-preventing process.
Background technology
In field produces, adopt for the comparatively serious loose sand oil accumulation that shakes out that various mechanical sand control modes are requisite will use screen pipe hanger, main purpose is to hang the annular space of sand-proof pipe and sealing sand-proof pipe and sleeve pipe, prevent that formation fluid from carrying reservoir sand and entering pit shaft by the annular space of sand-proof pipe and sleeve pipe and cause shaking out, common screen pipe hanger is suppressed by water filling and is realized setting and giving up, whole process is disposable to be finished, can't be in time to screen pipe hanger set quality and sealing performance is effectively verified, the part well may cause setting defective or poor sealing performance because the screen pipe hanger quality is unstable, finally causes the sand control failure.And because of screen pipe hanger cause sand control failure generally be difficult for found, only have by the operation in later stage and dissect to infer and get rid of, therefore, how to judge timely and effectively that screen pipe hanger sets quality and sealing performance, to there being the oil field sand prevention success or failure most important.
Summary of the invention
The purpose of this utility model provides a kind of from testing the envelope screen pipe hanger, after certainly testing the envelope screen pipe hanger and setting, and can be on ground by suppressing to judge the reliability that sets from testing the envelope screen pipe hanger.
The utility model is achieved in that it is by central tube, releasing gadget, sealing mechanism, retaining mechanism, anchor mechanism, the solution sealing mechanism forms, be provided with one between the upper cartridge of its sealing mechanism and the lower seal packing element and test sealing mechanism, testing sealing mechanism is sleeved on the central tube, test sealing mechanism by testing big envelope, upper support ring and lower support ring, test the envelope piston, testing the envelope shear pin forms, test on the upper support ring and lower support ring that big envelope is contained in two ends, upper support ring and lower support ring set are contained on the central tube, between upper support ring and lower support ring, test the envelope piston, testing the envelope piston bush is contained on the central tube, and by test the envelope shear pin be fixed on the central tube, central tube is provided with first and tests sealing of hole, testing big envelope is provided with second and tests sealing of hole
During use, screen casing is received from testing envelope screen pipe hanger bottom, after arriving the design well depth under the oil pipe, suppressing realization by ground sets from testing the envelope screen pipe hanger, set finish after, continue to suppress, after pressure rise reaches certain value, test the envelope shear pin and cut off, hydraulic drive is tested the envelope descent of piston, liquid first is tested sealing of hole on central tube, test second on the big envelope test sealing of hole enter between lower seal packing element and the upper cartridge with the formed ring cavity of sleeve pipe in, by the pressure drop amplitude judge set whether qualified, if it is defective to test envelope, the front deblocking of then giving up, solution is honored as a queen, and carries oil pipe in the continuation, and screen pipe hanger and screen casing are pulled out; When set finish and test the involution lattice after, drop into steel ball from oil pipe, be seated on the ball seat of giving up, suppress from the oil pipe water filling, after pressure reaches certain value, realize giving up operation, the above tubing string of lock pawl of giving up all proposes, and finishes well operations under the screen pipe hanger.
The utility model suppresses to judge whether screen pipe hanger sets qualified by ground, has greatly improved the success rate of mechanical sand control technique.
Description of drawings:
Accompanying drawing is the utility model structure principle chart.
The 1-top connection; The 2-lock pawl of giving up; The 3-ball seat of giving up; The 4-shear pin of giving up; The 5-lock tube of giving up; The 6-connecting short section; 7-top adjustment ring; The upper cartridge of 8-; 9-upper support ring; 10-tests big envelope; 1-second tests sealing of hole; 12-tests the envelope piston; 13-tests the envelope shear pin; 14-first tests sealing of hole; 15-lower support ring, 16-lower seal packing element; The 17-jump ring; 18-bottom adjustment ring; The 19-upper cone; The 20-slip sleeve; 21-the 3rd sets shear pin; The 22-slips; The 23-spring; The 24-lower cone; 25-second sets shear pin; The 26-central tube; 27-moment of torsion screw; 28-first sets shear pin; The 29-cylinder sleeve; The 30-lock ring; The 31-piston; 32-sets the hole; 33-deblock pawl; 34-separates big envelope; 35-deblocking shear pin; The 36-lower contact; 37-separates sealing mechanism; The 38-anchor mechanism; 39 locking mechanisms; 40-tests sealing mechanism; 41, releasing gadget.
The specific embodiment
The utility model is by top connection 1, central tube 26, releasing gadget 41, upper cartridge 8, lower seal packing element 16, retaining mechanism 40, anchor mechanism 38, separating sealing mechanism 37 forms, be provided with one between cartridge 8 and the lower seal packing element 16 on it and test sealing mechanism 40, testing sealing mechanism 40 is sleeved on the central tube 26, test the testing on the upper support ring 9 and lower support ring 15 that big envelope 10 is contained in two ends of sealing mechanism 40, upper support ring 9 and lower support ring 15 are sleeved on the central tube 26, between upper support ring 9 and lower support ring 15, test envelope piston 12, testing envelope piston 12 is sleeved on the central tube 26, and by test the envelope shear pin 13 be fixed on the central tube 26, central tube 26 is provided with first and tests sealing of hole 14, testing big envelope 10 is provided with second and tests sealing of hole 11, upper cartridge 8, lower seal packing element 16, retaining mechanism 39, anchor mechanism 38 all is sleeved on the central tube 26, releasing gadget is connected with central tube 26 by connecting short section 6, separates sealing mechanism 37 and is connected with central tube 26 by lower contact 36.
During use, first screen casing is received from testing envelope screen pipe hanger lower end, connect oil pipe from testing envelope screen pipe hanger top, with oil pipe down to the precalculated position, then water filling is suppressed, hydraulic pressure passes to piston 31 by the hole 32 that sets on the central tube 26, first sets shear pin 28 and cuts off after pressure reaches certain value, it is up that piston 31 promotes lower cone 24, lower cone 24 promotes slip sleeve 20, upper cone 19, jump ring 17, bottom adjustment ring 18 compression lower seal packing elements 16, then by upper support ring 9, test the upper cartridge 8 of big envelope 10 compressions, lower seal packing element 16 and upper cartridge 8 envelope that rises, after pressure rises to certain value again, second sets shear pin 25 and the 3rd sets shear pin 21 and cuts off, lower cone 24 is radially released slips 22 with upper cone 19, be anchored to internal surface of sleeve pipe, further compress simultaneously upper cartridge 8 and lower seal packing element 16, realize further rising envelope, simultaneously, up along with piston 31, the buttless thread engagement on the buttless thread on the piston 31 and the lock ring 30, realize cylinder sleeve 29, lock ring 30, the locking of piston 31, guarantee lower seal packing element 16 and upper cartridge 8 not resiliences after pressure release, after pressure reaches certain value, set action and finish.
In order to ensure setting reliability, test envelope this moment, continuation is suppressed in oil pipe, after pressure rise reaches certain value, testing envelope shear pin 13 cuts off, it is descending that hydraulic drive is tested envelope piston 12, liquid first testing sealing of hole 14, test second on the big envelope 10 and test sealing of hole 11 and enter in lower seal packing element 16 and upper cartridge 8 and the formed ring cavity of sleeve pipe on central tube 26, the sealing performance of check lower seal packing element 16 and upper cartridge 8.
If it is defective to test envelope, the front deblocking of should giving up, during deblocking, apply certain upper lifting force from the well head rail, simultaneously dextrorotation oil pipe, moment of torsion passes to top connection 1 by oil pipe, give up and lock pawl 2, the lock tube 5 of giving up, connecting short section 6, central tube 26, deblock pawl 33, because slips 22 and internal surface of sleeve pipe grappling, slips 22 is by lower cone 24, moment of torsion screw 27, the rotation of cylinder sleeve 29 restriction lower contacts 36, therefore deblock pawl 33 is realized relatively rotating with lower contact 36, left hand thread between deblock pawl 33 and the lower contact 36 is threaded off, carry oil pipe in the continuation, lower seal packing element 16 and upper cartridge 8 resiliences, the 15 drive upper cones 19 of the snap on the central tube 26 are up simultaneously, and lower cone 24 is descending realization upper cone 19 under Action of Gravity Field, lower cone 24 separates with slips 22, slips 22 is regained under the effect of spring 23, finish deblocking, carry oil pipe in the continuation, will certainly test envelope screen pipe hanger and screen casing and pull out.
As test the involution lattice, and drop into steel ball from oil pipe, be seated on the ball seat 3 of giving up, suppress from the oil pipe water filling, after pressure reached certain value, the shear pin 4 of giving up was cut off, the ball seat 3 of giving up is descending, get out of the way the elastic claw of the lock pawl 2 of giving up, carry oil pipe on this moment, the elastic claw of the lock pawl 2 of giving up reclaims, the lock pawl 2 of giving up is thrown off with the lock tube 5 of giving up, realization is given up, and the lock pawl 2 above tubing strings of giving up all propose, and finish well operations under the envelope screen casing.
When screen casing need to trip out, go into the well with dragging for anchor in the oil pipe connection, drag for anchor in inciting somebody to action down to separating big envelope 34 bottoms, on carry oil pipe, when upper lifting force reaches certain value, deblocking shear pin 35 is cut off, carry oil pipe in the continuation, in drag for anchor and drive to separate big envelope 34, deblock pawl 33 is up, and the elastic claw of deblock pawl 33 reclaims, and deblock pawl 33 is thrown off with lower contact 36, carry oil pipe in the continuation, lower seal packing element 16 and upper cartridge 8 resiliences, the 15 drive upper cones 19 of the snap on the central tube 26 are up simultaneously, and lower cone 24 is descending realization upper cone 19 under Action of Gravity Field, lower cone 24 separates with slips 22, slips 22 is regained under the effect of spring 23, from testing envelope screen pipe hanger deblocking, carry oil pipe in the continuation, will certainly test envelope screen pipe hanger and screen casing and trip out.
Claims (2)
1. certainly test the envelope screen pipe hanger for one kind, its top connection (1), central tube (26), releasing gadget (41), upper cartridge (8), lower seal packing element (16), retaining mechanism (39), anchor mechanism (38), solution sealing mechanism (37) form, it is characterized in that, be provided with one between upper cartridge (8) and the lower seal packing element (16) and test sealing mechanism (40), test sealing mechanism (40) and be sleeved on the central tube (26).
2. according to claim 1 a kind of from testing the envelope screen pipe hanger, it is characterized in that: test the testing on the upper support ring (9) and lower support ring (15) that big envelope (10) is contained in two ends of sealing mechanism (40), upper support ring (9) and lower support ring (15) are sleeved on the central tube (26), between upper support ring (9) and lower support ring (15), test envelope piston (12), testing envelope piston (12) is sleeved on the central tube (26), and by test the envelope shear pin (13) be fixed on the central tube (26), central tube (26) is provided with first and tests sealing of hole (14), tests big envelope (10) and is provided with second and tests sealing of hole (11).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2012205503535U CN202882818U (en) | 2012-10-25 | 2012-10-25 | Self-seal-examining screen pipe hanger |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2012205503535U CN202882818U (en) | 2012-10-25 | 2012-10-25 | Self-seal-examining screen pipe hanger |
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Publication Number | Publication Date |
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CN202882818U true CN202882818U (en) | 2013-04-17 |
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CN2012205503535U Expired - Fee Related CN202882818U (en) | 2012-10-25 | 2012-10-25 | Self-seal-examining screen pipe hanger |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104989306A (en) * | 2015-08-06 | 2015-10-21 | 中国石油集团长城钻探工程有限公司 | Releasable screen tube hanger |
CN105114021A (en) * | 2015-09-17 | 2015-12-02 | 湖南唯科拓石油科技服务有限公司 | Hanging sealer for installing velocity string in oil pipe and feeding and recovering tool of hanging sealer |
CN112377141A (en) * | 2020-12-08 | 2021-02-19 | 重庆前卫科技集团有限公司 | Spare locking device for oil pipe hanger of underwater Christmas tree |
-
2012
- 2012-10-25 CN CN2012205503535U patent/CN202882818U/en not_active Expired - Fee Related
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104989306A (en) * | 2015-08-06 | 2015-10-21 | 中国石油集团长城钻探工程有限公司 | Releasable screen tube hanger |
CN104989306B (en) * | 2015-08-06 | 2017-07-21 | 中国石油集团长城钻探工程有限公司 | One kind can unseal screen pipe hanger |
CN105114021A (en) * | 2015-09-17 | 2015-12-02 | 湖南唯科拓石油科技服务有限公司 | Hanging sealer for installing velocity string in oil pipe and feeding and recovering tool of hanging sealer |
CN112377141A (en) * | 2020-12-08 | 2021-02-19 | 重庆前卫科技集团有限公司 | Spare locking device for oil pipe hanger of underwater Christmas tree |
CN112377141B (en) * | 2020-12-08 | 2022-11-11 | 重庆前卫科技集团有限公司 | Spare locking device for oil pipe hanger of underwater Christmas tree |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20131025 |