CN202788658U - Hydraulic centralizer driving hydraulic cylinder - Google Patents

Hydraulic centralizer driving hydraulic cylinder Download PDF

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Publication number
CN202788658U
CN202788658U CN 201220390203 CN201220390203U CN202788658U CN 202788658 U CN202788658 U CN 202788658U CN 201220390203 CN201220390203 CN 201220390203 CN 201220390203 U CN201220390203 U CN 201220390203U CN 202788658 U CN202788658 U CN 202788658U
Authority
CN
China
Prior art keywords
hydraulic cylinder
hydraulic
centralizer
fluid cylinder
driving
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 201220390203
Other languages
Chinese (zh)
Inventor
郭新军
师月亮
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.)
Shengli Oilfield Kangbei Petroleum Engineering & Equipment Co Ltd
Original Assignee
Shengli Oilfield Kangbei Petroleum Engineering & Equipment 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 Shengli Oilfield Kangbei Petroleum Engineering & Equipment Co Ltd filed Critical Shengli Oilfield Kangbei Petroleum Engineering & Equipment Co Ltd
Priority to CN 201220390203 priority Critical patent/CN202788658U/en
Application granted granted Critical
Publication of CN202788658U publication Critical patent/CN202788658U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to oil field down-hole tools, in particular to a hydraulic centralizer driving hydraulic cylinder. The hydraulic centralizer driving hydraulic cylinder is characterized by comprising a hydraulic cylinder, a working mechanism and a center pipe, the hydraulic cylinder and the working mechanism are arranged outside the center pipe, the hydraulic cylinder is fixed with the center pipe in a linkage mode, a piston is arranged between the hydraulic cylinder and the center pipe, and the working mechanism is driven to move through the piston. The hydraulic centralizer driving hydraulic cylinder has the advantages that an opening mechanism is a built-in type mechanism, the opening mechanism is avoided to be opened ahead of time due to friction with well walls, external collision bearing capability is strong, opening pressures are accurate and not affected by outside influence, and the hydraulic centralizer driving hydraulic cylinder is simple in structure and easy to process and assemble.

Description

The fluid pressure type centralizer promotes fluid cylinder
Technical field
The utility model relates to a kind of oil field well instrument, and particularly a kind of fluid pressure type centralizer promotes fluid cylinder.
Background technology
The fluid pressure type centralizer is in the oil fracturing activities, plays the effect of righting sleeve pipe tubing string, avoids a kind of downhole tool of sleeve pipe week annular space inequality.
The fluid cylinder driving that uses is at present directly promoted to produce action by fluid cylinder, has following shortcoming or deficiency: 1. be hampered in the lower tubular column process, can use the distortion that bumps of fluid cylinder and the borehole wall, cause and open not in place or open inefficacy.2. tubing string and its body weight make it produce complicated frictional force at fluid cylinder and the borehole wall, cause it to open in advance, and causing does not put in place just blocks tubing string.
Summary of the invention
The purpose of this utility model is exactly in view of the foregoing defects the prior art has, provides a kind of fluid pressure type centralizer to promote fluid cylinder, and the assurance instrument is in the lower smooth unlatching of the environment of setting.
Its technical scheme is: comprise fluid cylinder, operating mechanism and central tube, central tube is provided with fluid cylinder and operating mechanism outward, and described fluid cylinder and central tube are connected and fixed, and is provided with piston between fluid cylinder and the central tube, by the piston mechanism that pushes the work forward.
The bottom of above-mentioned fluid cylinder is provided with retainer ring.
The beneficial effects of the utility model are: 1, opening mechanism is built-in, has avoided because opening in advance with wall friction; 2, it is strong to bear extraneous collision ability; 3, opening pressure is accurate, is not subjected to ectocine; 4, simple in structure, process easily and assemble.
Description of drawings
Accompanying drawing 1 is structural representation of the present utility model;
Among the upper figure: retainer ring 1, fluid cylinder 2, piston 3, operating mechanism 4, central tube 5.
The specific embodiment
By reference to the accompanying drawings 1, the utility model will be further described:
The utility model comprises fluid cylinder 2, operating mechanism 4 and central tube 5, central tube 5 outer fluid cylinder 2 and the operating mechanisms 4 of being provided with, it is characterized in that: described fluid cylinder 2 is connected and fixed with central tube 5, be provided with piston 3 between fluid cylinder 2 and the central tube 5, fluid cylinder maintains static, by piston 3 mechanism 4 that pushes the work forward, the bottom of above-mentioned fluid cylinder 2 is provided with retainer ring 1.
Promoted by original outer fluid cylinder, change the piston mechanism that pushes the work forward into, avoided sleeve pipe in the process of going into the well because collision causes the outer shell distortion, open difficulty or open inefficacy, hidden danger has been eliminated in the in advance action of having avoided simultaneously fluid cylinder and borehole wall Contact to rub and cause.

Claims (2)

1. a fluid pressure type centralizer promotes fluid cylinder, comprise fluid cylinder (2), operating mechanism (4) and central tube (5), outer fluid cylinder (2) and the operating mechanism (4) of being provided with of central tube (5), it is characterized in that: described fluid cylinder (2) is connected and fixed with central tube (5), be provided with piston (3) between fluid cylinder (2) and the central tube (5), by piston (3) mechanism (4) that pushes the work forward.
2. fluid pressure type centralizer according to claim 1 promotes fluid cylinder, and it is characterized in that: the bottom of described fluid cylinder (2) is provided with retainer ring (1).
CN 201220390203 2012-08-08 2012-08-08 Hydraulic centralizer driving hydraulic cylinder Expired - Fee Related CN202788658U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220390203 CN202788658U (en) 2012-08-08 2012-08-08 Hydraulic centralizer driving hydraulic cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220390203 CN202788658U (en) 2012-08-08 2012-08-08 Hydraulic centralizer driving hydraulic cylinder

Publications (1)

Publication Number Publication Date
CN202788658U true CN202788658U (en) 2013-03-13

Family

ID=47815934

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220390203 Expired - Fee Related CN202788658U (en) 2012-08-08 2012-08-08 Hydraulic centralizer driving hydraulic cylinder

Country Status (1)

Country Link
CN (1) CN202788658U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104033115A (en) * 2014-05-20 2014-09-10 廊坊市志宏协佳石油技术有限公司 Casing pipe centered locator and working method thereof
CN104405300A (en) * 2014-11-26 2015-03-11 中国石油集团西部钻探工程有限公司 Double-hydraulic-cylinder sleeve hydraulic centralizer
CN107120073A (en) * 2017-04-13 2017-09-01 中国石油集团西部钻探工程有限公司 Hydraulic casing centralizer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104033115A (en) * 2014-05-20 2014-09-10 廊坊市志宏协佳石油技术有限公司 Casing pipe centered locator and working method thereof
CN104033115B (en) * 2014-05-20 2019-11-29 廊坊市志宏协佳石油技术有限公司 A kind of casing centralization locator and its working method
CN104405300A (en) * 2014-11-26 2015-03-11 中国石油集团西部钻探工程有限公司 Double-hydraulic-cylinder sleeve hydraulic centralizer
CN107120073A (en) * 2017-04-13 2017-09-01 中国石油集团西部钻探工程有限公司 Hydraulic casing centralizer

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

Granted publication date: 20130313

Termination date: 20180808