CN2517865Y - Self checking and sealing water injection packer - Google Patents
Self checking and sealing water injection packer Download PDFInfo
- Publication number
- CN2517865Y CN2517865Y CN 01271902 CN01271902U CN2517865Y CN 2517865 Y CN2517865 Y CN 2517865Y CN 01271902 CN01271902 CN 01271902 CN 01271902 U CN01271902 U CN 01271902U CN 2517865 Y CN2517865 Y CN 2517865Y
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- CN
- China
- Prior art keywords
- well
- sealing
- packing element
- water injection
- plunger
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- Expired - Lifetime
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses a self checking and sealing water injection packer. A coupling 1 is connected with a center pipe 17 through screw threads. A well washing plunger 3 is arranged in a ring cavity of a well washing barrel 2 and a center pipe 17, and the left part of the well washing plunger 3 and the outer wall of the center pipe 17 and the right part of the well washing plunger 3 and the outer wall of a rubber barrel axis 5 are sealed by sealing rubber barrels 4, so the fit clearances of rigid components are enlarged, and the back washing well success rate is increased. The rubber barrel axis 5 is arranged on the outer wall of the center pipe 17 and is positioned by a hollow shear pin 18, and rubber barrels 6 are respectively arranged on the right and the left sides of a caulking ring 7. A press cap 8 which presses a bursting sheet 9 is arranged in a radical screw of the caulking ring 7 to form a self checking and sealing mechanism. The self checking and sealing mechanism checks the sealing property of the rubber barrels in a seat sealing process, and a main plunger 12 and an auxiliary plunger 16 are arranged in a ring cavity of a barrel 13 and the center pipe 17. The main plunger 12 is connected with the center pipe 17 through a buckling block 15, and the auxiliary plunger 16 is positioned through a shear pin 14 to form an anti-resistance mechanism to avoid seat sealing in the midway. The self checking and sealing water injection packer is suitable for being used in an oil field water injection well.
Description
Technical field the utility model belongs to oil water filling instrument, and is particularly a kind of from testing the envelope water injection packer.
The at present domestic and international water injection packer of background technology does not all have from testing the envelope function, when packer set, does not have the function of check packer sealing tube sealing; The well-flushing piston adopts the seal with O ring pattern, and it is little to seal between the firm part fit clearance, easily causes between the firm part stuckly, and during anti-flushing well, the well-flushing piston is not opened, and the well-flushing function can not realize, influence flood effectiveness; Take shear pin to deter, packer is gone into the well in the process, easily causes shear pin to cut off when the power that is hampered is big, and instrument is the seat envelope midway, the operation failure.
Summary of the invention the utility model purpose is to overcome above technical deficiency, provides a kind of well-flushing piston to adopt the sealing drum sealing, has from what test the envelope function to test the envelope water injection packer certainly.
The utility model task is, has central tube from testing the envelope water injection packer, box cupling, central tube is threaded with box cupling, the well-flushing piston is installed in well-flushing cylinder barrel and the central tube ring cavity, the packing element axle is loaded on the central tube outer wall, by hollow shear pin location, packing element is loaded on the spacer ring left and right sides, pressure cap compresses rupture disk and spacer ring is installed radially in the screw, snap is loaded in the snap seat groove, the snap seat is threaded with packing element axle elastic claw by screw thread, and support by the boss of central tube, cylinder barrel and central tube are by being threaded, form ring cavity, main piston, auxiliary piston is loaded in this chamber, and obstruction block is loaded on the interior lower end of main piston circumferential slot projection and is flush-mounted in the central tube circumference annular groove, outer wall is compressed by auxiliary piston left side inwall, auxiliary piston and main piston are located by shear pin, test the envelope water injection packer course of work certainly, are connected by oil pipe and go into the well, the water filling of going into the well behind the precalculated position is suppressed, hydraulic pressure passes to main piston by the hole on the central tube, auxiliary piston is after pressure reaches certain value, auxiliary piston is cut off shear pin under action of hydraulic force, right lateral, fixture block loses support, main piston left lateral compression packing element, packing element expands, the annular space between Sealed casing pipe and oil pipe.After pressure reached certain value, rupture disk was opened under the effect of hydraulic coupling, and liquid enters sleeve pipe, packing element axle, in the formed sealing ring cavity of packing element, checked the sealing performance of packing element after the compression-expansion.Test the envelope function and finish this moment.After stopping pressing, teeth on the snap, be engaged in the main piston groove, packing element does not produce resilience under the snap locking, during anti-flushing well, suppress to sleeve pipe and oil pipe annular space, fluid pressure is greater than hydraulic coupling in the oil pipe in the sleeve pipe, the well-flushing piston is left lateral under pressure, packing element axle well washing hole is opened, and liquid is ring cavity through between packing element axle and central tube, from orifice flow on the main piston below packing element.
Characteristics of the present utility model, one are provided with from testing sealing mechanism, and the seat envelope is checked the packing element sealing performance simultaneously; Adopt the cartridge sealing on its two well-flushings piston and central tube, the packing element axle, strengthened the fit clearance between firm part, prevent that firm part is stuck, guarantee to realize the well-flushing function; It three is provided with anti-resistance mechanism, guarantees midway seat envelope.
Description of drawings specifies with example below in conjunction with accompanying drawing.
Fig. 1 shows from testing envelope water injection packer structure chart.
The A-A sectional drawing of Fig. 2 diagrammatic sketch 1.
Among the figure, the 1-box cupling; 2-well-flushing cylinder barrel; 3-well-flushing piston; The 4-cartridge; 5-packing element axle; The 6-packing element; The 7-spacer ring; The 8-pressure cap; The 9-rupture disk; 10-snap seat; The 11-snap; The 12-main piston; The 13-cylinder barrel; The 14-shear pin; The 15-obstruction block; The 16-auxiliary piston; The 17-central tube; The hollow shear pin of 18-
The specific embodiment is with reference to accompanying drawing 1,2, from testing the envelope water injection packer, having box cupling 1 is threaded with central tube 17, well-flushing cylinder barrel 2 and the interior well-flushing piston 3 of installing of the ring cavity of central tube 17, well-flushing piston 3 left parts and central tube 17 outer walls, seal by fluid sealant 4 between right part and packing element axle 5 outer walls, packing element axle 5 mounting center pipes 17 outer walls, by hollow shear pin 18 location, packing element 6 packing spacer rings 7 left and right sides, pressure cap 8 compress rupture disk 9 and spacer rings 7 are installed radially in the screw, in the ring cavity of cylinder barrel 13 and central tube 17 main piston 12 are housed, auxiliary piston 16, main piston 12 is connected by fixture block 15 with central tube 17, and auxiliary piston 16 is by shear pin 14 location.
From testing the envelope water injection packer course of work, go into the well by the oil pipe connection, the water filling of going into the well behind the precalculated position is suppressed, hydraulic pressure passes to main piston 12, auxiliary piston 16 by the through hole on the central tube 17, after pressure reaches certain value, auxiliary piston 16 is cut off shear pin 14 under action of hydraulic force, right lateral, and fixture block 15 loses support, main piston 12 left lateral compression packing element 6, annular space between packing element 6 Expansion sealing sleeve pipes and oil pipe, after pressure reached certain value, rupture disk 9 was opened under action of hydraulic force, liquid enters sleeve pipe, packing element axle 5, in the sealing ring cavity that packing element 6 is gone after the compression-expansion, the sealing performance of check packing element, test the envelope function and finish this moment.After stopping pressing, the teeth on the snap 11 are engaged in the main piston groove, and packing element 6 does not produce resilience under snap 11 lockings.
During anti-flushing well, suppress to sleeve pipe and oil pipe annular space, because fluid pressure is greater than hydraulic coupling in the oil pipe in the sleeve pipe, well-flushing piston 3 is left lateral under action of hydraulic force, packing element axle 5 well-flushing through holes are opened, liquid is through packing element axle 5 and 17 ring cavities of central tube, and the through hole from main piston 12 flows to packing element below 6.
Deblocking: on carry oil pipe, under the frictional force effect that packing element 6 and internal surface of sleeve pipe are produced, hollow shear pin 18 is cut off, central tube 17 is up, the pawl spring of packing element axle 5 loses support, and in the effect lower circlip seat 10 and the pawl spring disengaging of packing element 6 bounces, packing element 6 is released to the deblocking state.
Technical performance index:
1, operating pressure :≤30MPa
2, operating temperature :≤120 ℃ 3, test seal pressure: 16MPa4, seat seal pressure: 20MPa5, anti-flushing well piston opening pressure: 30MPa6, deblocking load certainly: this instrument of 60KN is applicable to water injection well in oil fields.
Claims (3)
1, a kind of from testing the envelope water injection packer, having box cupling (1) is threaded with central tube (17), well-flushing cylinder barrel (2) and the interior well-flushing piston (3) of installing of the ring cavity of central tube (17), it is characterized in that well-flushing piston (3) left part and central tube (17) outer wall, seal by cartridge (4) between right part and packing element axle (5) outer wall, packing element axle (5) mounting center pipe (17) outer wall, locate by hollow shear pin (18), packing element (6) packing spacer ring (7) left and right sides, pressure cap (8) compresses rupture disk (9) and spacer ring (7) is installed radially in the screw, in the ring cavity of cylinder barrel (13) and central tube (17) main piston (12) is housed, auxiliary piston (16), main piston (12) is connected by fixture block (15) with central tube (17), and auxiliary piston (16) is located by shear pin (14).
2, according to claim 1 from testing the envelope water injection packer, the packing element (6), the hollow shear pin (18) that it is characterized in that packing element axle (5), spacer ring (7) both sides are formed and are tested sealing mechanism.
3, according to claim 1 from testing the envelope water injection packer, it is characterized in that well-flushing piston (3) left side and central tube (17) outer wall right side and packing element axle (5) outer wall are sealed by cartridge (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01271902 CN2517865Y (en) | 2001-11-27 | 2001-11-27 | Self checking and sealing water injection packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01271902 CN2517865Y (en) | 2001-11-27 | 2001-11-27 | Self checking and sealing water injection packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2517865Y true CN2517865Y (en) | 2002-10-23 |
Family
ID=33677199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01271902 Expired - Lifetime CN2517865Y (en) | 2001-11-27 | 2001-11-27 | Self checking and sealing water injection packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2517865Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213865A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气集团公司 | Self-expansion method improving sealing ability and self-expansion packer |
| CN104929563A (en) * | 2015-05-27 | 2015-09-23 | 中国石油天然气股份有限公司 | Water injection packer |
| CN106703739A (en) * | 2015-08-07 | 2017-05-24 | 中国石油化工股份有限公司 | Balanced type double-piston hydraulic-control compression four-rubber-cylinder packer |
| CN110529067A (en) * | 2019-07-25 | 2019-12-03 | 中国石油天然气股份有限公司 | Packer capable of confirming whether disjointing device works or not at well head |
| CN111005701A (en) * | 2020-01-14 | 2020-04-14 | 胜利油田利丰稠油技术开发有限公司 | Fishing and fast drilling composite material well fixing and completing tool |
-
2001
- 2001-11-27 CN CN 01271902 patent/CN2517865Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213865A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气集团公司 | Self-expansion method improving sealing ability and self-expansion packer |
| CN104929563A (en) * | 2015-05-27 | 2015-09-23 | 中国石油天然气股份有限公司 | Water injection packer |
| CN104929563B (en) * | 2015-05-27 | 2017-10-17 | 中国石油天然气股份有限公司 | Water injection packer |
| CN106703739A (en) * | 2015-08-07 | 2017-05-24 | 中国石油化工股份有限公司 | Balanced type double-piston hydraulic-control compression four-rubber-cylinder packer |
| CN110529067A (en) * | 2019-07-25 | 2019-12-03 | 中国石油天然气股份有限公司 | Packer capable of confirming whether disjointing device works or not at well head |
| CN111005701A (en) * | 2020-01-14 | 2020-04-14 | 胜利油田利丰稠油技术开发有限公司 | Fishing and fast drilling composite material well fixing and completing tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20111127 Granted publication date: 20021023 |