CN202611655U - Ball-passing type control starting packer - Google Patents

Ball-passing type control starting packer Download PDF

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Publication number
CN202611655U
CN202611655U CN 201220294977 CN201220294977U CN202611655U CN 202611655 U CN202611655 U CN 202611655U CN 201220294977 CN201220294977 CN 201220294977 CN 201220294977 U CN201220294977 U CN 201220294977U CN 202611655 U CN202611655 U CN 202611655U
Authority
CN
China
Prior art keywords
tile
sliding sleeve
packer
ball
connector
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
CN 201220294977
Other languages
Chinese (zh)
Inventor
苏敏文
邓小强
李景彬
张文
隆世明
沙洲
王改红
韩玮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changqing Downhole Operation Co of CNPC Chuanqing Drilling Engineering Co Ltd
Original Assignee
Changqing Downhole Operation Co of CNPC Chuanqing Drilling Engineering Co Ltd
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 Changqing Downhole Operation Co of CNPC Chuanqing Drilling Engineering Co Ltd filed Critical Changqing Downhole Operation Co of CNPC Chuanqing Drilling Engineering Co Ltd
Priority to CN 201220294977 priority Critical patent/CN202611655U/en
Application granted granted Critical
Publication of CN202611655U publication Critical patent/CN202611655U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to the technical field of improvement of oil and gas field storage layers, in particular to a ball-passing type control starting packer. The packer at least comprises a tile assembly body, a sliding sleeve assembly body, a glue tube assembly tube, a central tube and a lower connector. The tile assembly body is composed of a tile and an upper connector, the tile is fixed inside the upper connector through elastic force of itself, the sliding sleeve assembly body is composed of a sliding sleeve and a middle connector, the sliding sleeve is fixed inside the middle connector through a shear pin, the sliding sleeve assembly body is connected with the upper connector, the glue tube assembly body is composed of a glue tube, an upper glue tube seat and a lower glue tube seat and is connected with the middle connector, the upper end of the central tube is connected with the middle connector, and the lower end of the central tube is connected with the lower connector. The ball-passing type control starting packer can be selectively sealed, sealing stability is improved, and development cost for improving the performance of the glue tube is greatly reduced.

Description

Cross the control of ball formula and open packer
Technical field
The utility model relates to oil gas field stimulation technology field, particularly a kind of ball formula control unlatching packer of crossing, and it is one of underground work instrument commonly used in the operation of oil gas field reservoir reconstruction, is specially adapted to fixed tubular column multilevel hierarchy pressing crack construction.
Background technology
Packer is the low-permeability oil deposit reservoir reconstruction than indispensable downhole tool, for further improving well yield and shortening duty cycle, reservoir is more effectively transformed in recent years, has carried out the research of fixed tubular column multilevel hierarchy fracturing tool.In the multilevel hierarchy pressing crack construction, adopt K344 packer and sliding sleeve switch to make up packing and the construction that realizes interlayer mostly.Conventional K344 type packer is because self structure, in lower floor's construction, above all packers carry out seat synchronously and seal and deblocking; Along with the increase gradually of the progression of constructing, the zonal isolation device of back construction is owing to seat repeatedly seals and deblocking, because INFLUENCE ON FATIGUE STRENGTH; Reduced the performance of packing element; Seat envelope effect when finally influencing the packer duty, or even seat seals, and causes constructing carrying out normally.Set stable development cost height if only improve, also be not easy to realize through the performance that improves packing element.If machining control opening mechanism on the basis of conventional K344 packer; Can realize the control unlatching of packer; Make packing element just need to carry out the seat envelope under the situation of work; Can avoid packing element because of the repeatedly influence of the tired shadow strength failure of seat envelope and deblocking like this, can be implemented in the seat envelope stability that improves packer under the situation that does not change original packing element.
Summary of the invention
In order to overcome conventional K344 type packer causes packing element performance deficiency in the multilayer construction owing to the characteristics of self structure influence; The utility model provides a kind of ball formula control unlatching packer of crossing; This is crossed the control of ball formula and opens the seat envelope effect that packer can improve packer through interpolation control opening mechanism; Greatly reduce the development cost that improves the packing element performance, and can ensure that construction normally carries out.
The technical scheme that the utility model adopts is: cross the control of ball formula and open packer, it is characterized in that: which comprises at least tile assembly, sliding sleeve assembly, packing element assembly, central tube and lower contact, the tile assembly is made up of tile and top connection; Tile is fixed on top connection inside through the elastic force of self, forms the ball seat tile, and the sliding sleeve assembly is made up of sliding sleeve and transition joint; Sliding sleeve is fixed on transition joint inside by shear pin; The sliding sleeve assembly is connected with top connection, and the packing element assembly is made up of packing element, last glue tube base and lower rubber cylinder seat, and last glue tube base is connected with transition joint; The central tube upper end is connected with transition joint, and the central tube lower end is connected with lower contact.
Described top connection is connected through transition joint with last glue tube base and central tube, and the pilot passage is arranged in transition joint.
Described tile is that spring steel is made.
The beneficial effect of the utility model is: a kind of ball formula control unlatching packer of crossing is provided; This is crossed the control of ball formula and opens the selectivity seat envelope that packer can be realized packer; Avoided the seat envelope of packer under off working state, therefore reduced packing element, improved the seat envelope stability of packer because of the repeatedly influence of seat envelope fatigue failure; Greatly reduce the development cost that improves the packing element performance, and can ensure that construction normally carries out.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described further, but does not limit as the use of the utility model.
Fig. 1 is the general structure sketch map of the utility model embodiment;
Fig. 2 is the general structure opening sketch map of the utility model embodiment.
Among the figure: 1, top connection; 2, tile; 3, shear pin; 4, sliding sleeve; 5, pilot passage; 6, transition joint; 7, go up glue tube base; 8, central tube; 9, packing element; 10, lower rubber cylinder seat; 11, lower contact.
The specific embodiment
In Fig. 1, cross the control of ball formula and open packer, which comprises at least tile assembly, sliding sleeve assembly, packing element assembly, central tube 8 and lower contact 11; The tile assembly is made up of tile 2 and top connection 1, and tile 2 is fixed on top connection 1 inside through the elastic force of self, forms the ball seat tile; The sliding sleeve assembly is made up of sliding sleeve 4 and transition joint 6, and sliding sleeve 4 is fixed on transition joint 6 inside by shear pin 3, and the sliding sleeve assembly is connected with top connection 1; The packing element assembly is made up of packing element 9, last glue tube base 7 and lower rubber cylinder seat 10; Last glue tube base 7 is connected with transition joint 6, and central tube 8 upper ends are connected with transition joint 6, and central tube 8 lower ends are connected with lower contact 11.
In Fig. 1, top connection 1 is stair-stepping, and tile 2 is positioned at its minimum latus rectum place.Top connection 1 is connected through transition joint 6 with last glue tube base 7 and central tube 8, and pilot passage 5 is arranged in transition joint 6.Tile 2 is made for spring steel, and itself has elastic force.
In Fig. 1 and Fig. 2, tile 2 cooperates with sliding sleeve 4, the pilot hydrophthalmia of shutoff transition joint 6; When this grade packer did not need work, pilot passage 5 was in closed condition, when needing to open; Pitching is seated with controlling hydrophthalmia it and opens on the ball seat tile that sliding sleeve 4 is connected, after pressurizeing, cuts off shear pin 3; Ball seat tile 2 drives sliding sleeve 4 and moves down, and opens packer pilot passage 5, after the ball seat tile is moved down into certain position with sliding sleeve; Ball seat tile 2 scatters, and makes valve body pass through enlarged-diameter, and the steel ball that is located on the ball seat tile 2 drops to the ball seat tile place with the one-level sliding sleeve switch through packer central tube 8.
Parts that present embodiment is not described in detail and structure belong to well-known components and the common structure or the conventional means of the industry, here not narration one by one.

Claims (3)

1. cross the control of ball formula and open packer; It is characterized in that: which comprises at least tile assembly, sliding sleeve assembly, packing element assembly, central tube (8) and lower contact (11), the tile assembly is made up of tile (2) and top connection (1), and tile (2) is fixed on top connection (1) inside through the elastic force of self; Form the ball seat tile; The sliding sleeve assembly is made up of sliding sleeve (4) and transition joint (6), and sliding sleeve (4) is fixed on transition joint (6) inside by shear pin (3), and sliding sleeve (4) assembly is connected with top connection (1); The packing element assembly is made up of packing element (9), last glue tube base (7) and lower rubber cylinder seat (10); Last glue tube base (7) is connected with transition joint (6), and central tube (8) upper end is connected with transition joint (6), and central tube (8) lower end is connected with lower contact (11).
2. the ball formula control unlatching packer of crossing according to claim 1, it is characterized in that: described top connection (1) is connected through transition joint (6) with last glue tube base (7) and central tube (8), and pilot passage (5) is arranged in transition joint (6).
3. the ball formula control unlatching packer of crossing according to claim 1, it is characterized in that: described tile (2) is that spring steel is made.
CN 201220294977 2012-06-21 2012-06-21 Ball-passing type control starting packer Expired - Fee Related CN202611655U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220294977 CN202611655U (en) 2012-06-21 2012-06-21 Ball-passing type control starting packer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220294977 CN202611655U (en) 2012-06-21 2012-06-21 Ball-passing type control starting packer

Publications (1)

Publication Number Publication Date
CN202611655U true CN202611655U (en) 2012-12-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220294977 Expired - Fee Related CN202611655U (en) 2012-06-21 2012-06-21 Ball-passing type control starting packer

Country Status (1)

Country Link
CN (1) CN202611655U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103184856A (en) * 2013-02-28 2013-07-03 中国石油天然气集团公司 Hydraulic jet packer applicable to multilevel hydraulic jet fracturing
CN103291240A (en) * 2013-06-19 2013-09-11 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 Packer central pipe unscrewing-resistant locking mechanism and packer with mechanism

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103184856A (en) * 2013-02-28 2013-07-03 中国石油天然气集团公司 Hydraulic jet packer applicable to multilevel hydraulic jet fracturing
CN103291240A (en) * 2013-06-19 2013-09-11 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 Packer central pipe unscrewing-resistant locking mechanism and packer with mechanism
CN103291240B (en) * 2013-06-19 2016-03-16 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 Packer central tube anti-back button locking mechanism and the packer containing this locking mechanism

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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: 20121219

Termination date: 20170621

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