CN201924873U - Long-term expanding packer - Google Patents

Long-term expanding packer Download PDF

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Publication number
CN201924873U
CN201924873U CN2010206832066U CN201020683206U CN201924873U CN 201924873 U CN201924873 U CN 201924873U CN 2010206832066 U CN2010206832066 U CN 2010206832066U CN 201020683206 U CN201020683206 U CN 201020683206U CN 201924873 U CN201924873 U CN 201924873U
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CN
China
Prior art keywords
valve body
deblocking
screw thread
packing element
glue cylinder
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
Application number
CN2010206832066U
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Chinese (zh)
Inventor
马来增
张丁涌
杨涛
Original Assignee
张玉雪
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 张玉雪 filed Critical 张玉雪
Priority to CN2010206832066U priority Critical patent/CN201924873U/en
Application granted granted Critical
Publication of CN201924873U publication Critical patent/CN201924873U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a long-term expanding packer. The lower part of an upper joint is connected with an upper screw thread of a setting valve body. A middle screw thread of the setting valve body is connected with an upper screw thread of an inner pipe. A lower screw thread of the inner pipe is connected with a screw thread of a lower joint. A one-way valve is reversely hung and arranged on the setting valve body. A lower screw thread of the setting valve body is connected with the upper part of a glue cylinder. The glue cylinder is sleeved outside the inner pipe. The lower part of the glue cylinder is sleeved outside the lower joint. The setting valve body is provided with a communication hole. A deblocking piston is arranged between the upper joint and the setting valve body. The upper inner part of the deblocking piston is in fit and sealed with the upper joint. The lower outer part of the deblocking piston is in fit and sealed with the setting valve body. When water is injected for applying a pressure, the injected water opens the one-way valve to enter the glue cylinder through the communication hole so that the glue cylinder expands to seal up an oil sleeve; when a water injection well is not injected with the water due to reasons, the glue cylinder cannot shrink and cannot shrink and expand repeatedly to be damaged; and in the deblocking process, the well washing pressure pushes the deblocking piston to move downwards to burst through the one-way valve so as to discharge the pressure in the glue cylinder and realize deblocking. The long-term expanding packer has a simple and compact structure, is easy to deblock and can be used for sealing for a long time.

Description

Long-acting expanding packer
Technical field
The utility model is the underground equipment that separated-zone water infection oil field is used, and is a kind of long-acting expanding packer.
Background technology
The long-acting expanding packer that oil-field flooding is used is that packing element expands outwardly when the packing element internal pressure is higher than the packing element external pressure, realizes the purpose of sealing oil casing annular space.In the time will in well, tripping out long-acting expanding packer, need the packing element internal pressure to be equal to or less than the packing element external pressure, packing element is shunk.For the packing element external and internal pressure is changed, long-acting expanding packer is provided with the injection channel.But the injection channel of present long-acting expanding packer is two-way, and after well stopped to annotate for some reason, the packing element internal pressure descended, and packing element shrinks.When recovering water filling, the packing element internal pressure rises, the packing element expansion.If when stopping for some reason to annotate often, packing element shrinks repeatedly, just expands and damage easily, cause the separated-zone water infection oil field well can not quantitative injection, make its layer water injection rate that has exceed the injection allocation amount, the layer water injection rate that has is not enough, becomes and shorts layer, does not reach the reasonable benefit of water flooding.The patent No. is 00202259.1 the pressure reduction envelope backwash desealed water injection packer that expands, and the injection channel is unidirectional when not having anti-flushing well, and after can avoiding stopping for some reason annotating, packing element shrinks, and the problem of expanding again during water filling can avoid packing element to damage again.But its complex structure, poor reliability causes work malfunctioning, causes that packer damages or because of not blocking tubing string by deblocking.
Summary of the invention
The purpose of this utility model provides a kind of simple in structure, reliable operation, is easy to the long-acting expanding packer of deblocking.
The purpose of this utility model is achieved in that and comprises top connection, the deblocking piston, one way valve, seat envelope valve body, packing element, interior pipe, lower contact, the top connection bottom is sealed on the valve body with seat and is threaded, seat envelope valve body middle part screw thread is threaded with interior pipe top, interior pipe lower thread is threaded with lower contact, one way valve is hung by the feet and is installed on the present envelope valve body, screw thread is connected with packing element top under the seat envelope valve body, packing element is sleeved on outside the interior pipe, the packing element bottom is sleeved on outside the lower contact, on the seat envelope valve body linked hole is arranged, the deblocking piston is installed between top connection and the seat envelope valve body, inner and top connection fitted seal on the deblocking piston, the deblocking piston is outside down to seal the valve body fitted seal with seat.
The deblocking piston is fixed in the top connection by shear pin.
Sheath is installed in top connection, and sheath entangles the deblocking piston, perforation on the sheath.
The beneficial effects of the utility model are: when water filling is suppressed, injection water is opened one way valve through linked hole and is entered in the packing element, make packing element expansion back Seal Oil sleeve pipe, packing element expansion back one way valve resets under spring action, water in the packing element can not flow out, therefore, packing element can not shrink yet after water injection well stops to annotate for some reason, and packing element can not shrink repeatedly, expand and damage.During deblocking, anti-flushing well, well-flushing pressure enter deblocking piston top outside sheath, promote the deblocking descent of piston, and the deblocking piston is pushed one way valve open, and the pressure in the packing element is discharged, and realize deblocking.The utility model is simple and compact for structure, and the reliability height is easy to deblocking, long service life, and the energy long-term seal has remarkable economic efficiency.
Description of drawings
Fig. 1 is a structure assembling drawing of the present utility model.
The specific embodiment
Comprise top connection 1, deblocking piston 2, one way valve 3, seat envelope valve body 4, packing element 5, interior pipe 6, lower contact 7, top connection 1 bottom is sealed on the valve body 4 with seat and is threaded, seat envelope valve body 4 middle part screw threads are threaded with interior pipe 6 tops, interior pipe 6 lower thread are threaded with lower contact 7, one way valve 3 is hung by the feet and is installed on the present envelope valve body 4, in packing element 5 during fluid injection, one way valve 3 can be opened, liquid stream can enter in the packing element 5, when one way valve 3 is closed, liquid in the packing element 5 can not outwards flow out, 4 times screw threads of seat envelope valve body are connected with packing element 5 tops, and outside the pipe 6, packing element 5 bottoms were sleeved on outside the lower contact 7 in packing element 5 was sleeved on, between packing element 5 bottoms and the lower contact 7 sealing ring is installed, on the seat envelope valve body 4 linked hole 10 is arranged, deblocking piston 2 is installed between top connection 1 and the seat envelope valve body 4, and the sealing ring sealing is installed between the two, inner and top connection 1 fitted seal on the deblocking piston 2,2 times outsides of deblocking piston and seat envelope valve body 4 fitted seal.Deblocking piston 2 is fixed in the top connection 1 by shear pin 9, and deblocking piston 2 did not move when it was gone into the well.Sheath 8 is installed in top connection 1, and sheath 8 entangles deblocking piston 2, piston is shielded perforation and inside and outside UNICOM on the sheath 8.When water filling is suppressed, injection water is opened one way valve 3 through linked hole 10 and is entered in the packing element 5, make packing element 5 expansion back Seal Oil sleeve pipes, the shear pin of deblocking piston 2 is cut off, and deblocking piston 2 can move, packing element 5 expansion back one way valves 3 closing passage that resets under spring action, water in the packing element 5 can not flow out, therefore, packing element 5 can not shrink after water injection well stops to annotate for some reason, and packing element 5 can not shrink repeatedly, expand and damage.During deblocking, anti-flushing well, well-flushing pressure enter deblocking piston 2 tops outside sheath 8, and it is descending to promote deblocking piston 2, and deblocking piston 2 is pushed one way valve 3 open, and the pressure in the packing element 5 is discharged, and realize deblocking.

Claims (3)

1. long-acting expanding packer, comprise top connection (1), deblocking piston (2), one way valve (3), seat envelope valve body (4), packing element (5), interior pipe (6), lower contact (7), it is characterized in that: top connection (1) bottom is sealed on the valve body (4) with seat and is threaded, seat envelope valve body (4) middle part screw thread is threaded with interior pipe (6) top, interior pipe (6) lower thread is threaded with lower contact (7), one way valve (3) is hung by the feet and is installed on the present envelope valve body (4), seat envelope valve body (4) screw thread down is connected with packing element (5) top, packing element (5) is sleeved on outside the interior pipe (6), packing element (5) bottom is sleeved on outside the lower contact (7), on the seat envelope valve body (4) linked hole (10) is arranged, deblocking piston (2) is installed between top connection (1) and the seat envelope valve body (4), deblocking piston (2) is gone up inner and top connection (1) fitted seal, and deblocking piston (2) is outside down to seal valve body (4) fitted seal with seat.
2. long-acting expanding packer according to claim 1 is characterized in that: deblocking piston (2) is fixed in the top connection (1) by shear pin (9).
3. long-acting expanding packer according to claim 1 is characterized in that: sheath (8) is installed in top connection (1), and sheath (8) entangles deblocking piston (2), and sheath (8) is gone up perforation.
CN2010206832066U 2010-12-15 2010-12-15 Long-term expanding packer Expired - Fee Related CN201924873U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010206832066U CN201924873U (en) 2010-12-15 2010-12-15 Long-term expanding packer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010206832066U CN201924873U (en) 2010-12-15 2010-12-15 Long-term expanding packer

Publications (1)

Publication Number Publication Date
CN201924873U true CN201924873U (en) 2011-08-10

Family

ID=44428731

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010206832066U Expired - Fee Related CN201924873U (en) 2010-12-15 2010-12-15 Long-term expanding packer

Country Status (1)

Country Link
CN (1) CN201924873U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105156061A (en) * 2015-09-25 2015-12-16 中国石油天然气股份有限公司 Underground washable well water injection inserting pipe sealing device
CN105672934A (en) * 2014-11-20 2016-06-15 中国石油化工股份有限公司 Hydraulic-cylinder type enclosed anti-creep packer
CN109252834A (en) * 2017-07-13 2019-01-22 中国石油化工股份有限公司 The concentric long-acting layered water filler of binary channels and method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105672934A (en) * 2014-11-20 2016-06-15 中国石油化工股份有限公司 Hydraulic-cylinder type enclosed anti-creep packer
CN105672934B (en) * 2014-11-20 2018-04-03 中国石油化工股份有限公司 The closed Anticreep packer of hydraulic cylinder-type
CN105156061A (en) * 2015-09-25 2015-12-16 中国石油天然气股份有限公司 Underground washable well water injection inserting pipe sealing device
CN105156061B (en) * 2015-09-25 2018-04-03 中国石油天然气股份有限公司 A kind of underground washing well water filling intubation seal device
CN109252834A (en) * 2017-07-13 2019-01-22 中国石油化工股份有限公司 The concentric long-acting layered water filler of binary channels and method
CN109252834B (en) * 2017-07-13 2024-05-24 中国石油化工股份有限公司 Concentric double-channel long-acting layered water injection device and method

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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

Granted publication date: 20110810

Termination date: 20181215

CF01 Termination of patent right due to non-payment of annual fee