CN204098834U - A kind of oil tube anchor device - Google Patents

A kind of oil tube anchor device Download PDF

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Publication number
CN204098834U
CN204098834U CN201420470990.0U CN201420470990U CN204098834U CN 204098834 U CN204098834 U CN 204098834U CN 201420470990 U CN201420470990 U CN 201420470990U CN 204098834 U CN204098834 U CN 204098834U
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CN
China
Prior art keywords
piston
slips
tube
top connection
wall
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.)
Active
Application number
CN201420470990.0U
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Chinese (zh)
Inventor
冯波
王隆慧
李英
常建强
杨文强
龚山华
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.)
China Petroleum and Chemical Corp
Oil Production Technology Research Institute of Sinopec Zhongyuan Petroleum Engineering Co Ltd
Original Assignee
China Petroleum and Chemical Corp
Oil Production Technology Research Institute of Sinopec Zhongyuan Petroleum Engineering Co Ltd
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Publication date
Application filed by China Petroleum and Chemical Corp, Oil Production Technology Research Institute of Sinopec Zhongyuan Petroleum Engineering Co Ltd filed Critical China Petroleum and Chemical Corp
Priority to CN201420470990.0U priority Critical patent/CN204098834U/en
Application granted granted Critical
Publication of CN204098834U publication Critical patent/CN204098834U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of oil tube anchor device, belong to technical field of tools under oil gas field oil recovery gas recovery well, be made up of top connection, slips, drive unit and lower contact, top connection is hollow section, upper end is tubing thread, and outer tube wall is provided with outer shoulder, and its underpart tube wall has fluid hole; Slips is lobe shape structure, and be fixed in by slips bearing pin on the outer tube wall of the outer shoulder bottom of top connection, slips bottom is pyramidal structure, and outer wall is dentation; Drive unit is one group of piston, and screw thread is arranged in lower contact, and upper piston area is set with a cone, and cone top tapering is identical with the tapering of slips lower taper.Slips of the present utility model can be expanded to greatest extent under the effect of cone, radial dilatation is large, and increase the effective external diameter under duty, applicable casing size scope is large, the reliability of anchor, persistence and voltage endurance capability are improved, simultaneously applied widely.

Description

A kind of oil tube anchor device
Technical field
The utility model relates to a kind of oil tube anchor device, belongs to technical field of tools under oil gas field oil recovery gas recovery well.
Background technology
Hydraulic anchor is that the operations involving high pressures such as a kind of oil field well pressure break, acidifying fix the conventional downhole tool of tubing string, its operating principle is that hydraulic anchor is connected with working string, bottom is provided with oil jacket isolating tool, highly pressurised liquid is injected in oil pipe, be arranged on the anchor fluke outwards mobile and sleeve pipe grappling under the effect of the pressure on hydraulic anchor, play the effect of fixed operation tubing string.At present hydraulic anchor form primarily of anchor body, anchor fluke, pressing plate, hydraulic anchor body is provided with anchor fluke, anchor fluke hole, and anchor fluke is arranged in anchor fluke hole, and the spread pattern of anchor fluke on anchor body be all that longitudinal direction is arranged in a straight line, and radial loop week is divided into multiple directions.The project organization of anchor fluke is isometrical cylindric, and outer face is dentation circular arc, and is provided with the gathering sill for installing pressing plate.Pressing plate utilizes and is bolted on anchor body, is provided with Compress Spring, for oppressing anchor fluke return after pressure release between anchor fluke and pressing plate." hydraulic anchor " that ZL201220076942.4 introduces is exactly a kind of hydraulic anchor wherein used, it is characterized in that cloth 12 anchor fluke holes in main body, be distributed on described anchor body in six row four rows, due to structure restrictions such as the degree of depth in anchor fluke hole and thickness of compressive plate, anchor fluke stroke is limited, cause this body diameter of hydraulic anchor and applicable casing inner diameter gap less, between general diametric clearance 5mm to 15mm, not easily enter down in casing deformation well, or enter under becoming minimum diameter by cover, because anchor fluke stroke is limited, cause anchor fluke not firmly to be stuck on casing wall, cause operation to be lost efficacy.
Summary of the invention
The purpose of this utility model is limited for the anchor fluke stroke of prior art existence, and the defect that the scope of application is little, provides a kind of oil tube anchor device.
The utility model is made up of top connection, slips, drive unit and lower contact, and top connection is hollow section, and upper end is tubing thread, and outer tube wall is provided with outer shoulder, and its underpart tube wall has fluid hole; Slips is lobe shape structure, and be fixed in by slips bearing pin on the outer tube wall of the outer shoulder bottom of top connection, slips bottom is pyramidal structure, and outer wall is dentation; Drive unit is one group of piston, and screw thread is arranged in lower contact, and upper piston area is set with a cone, and cone top tapering is identical with the tapering of slips lower taper.
Described top connection is radially evenly distributed with two, three or four slips.
The beneficial effects of the utility model are: slips of the present utility model can radial dilatation be large to greatest extent under the effect of cone, increase the effective external diameter under duty, applicable casing size scope is large, the reliability of anchor, persistence and voltage endurance capability are improved, simultaneously applied widely.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further.
From accompanying drawing 1, the utility model is made up of top connection 1, slips 3, drive unit and lower contact 12, and top connection 1 is hollow section, and upper end is tubing thread, and outer tube wall is provided with outer shoulder, its underpart tube wall has fluid hole 1a; Slips 3 is lobe shape structure, and be fixed on the outer tube wall of the outer shoulder bottom of top connection 1 by slips bearing pin 2, slips 3 bottom is pyramidal structure, and outer wall is dentation; Drive unit is one group of piston, and screw thread is arranged in lower contact 12, and upper piston area is set with a cone 4, and cone 4 top tapering is identical with the tapering of slips 3 lower taper.
Described top connection 1 is radially evenly distributed with two, three or four slips 3.
Described drive unit is one group of piston, be made up of piston tube 7, spring 8, upper piston 9, lower piston 10, piston tube 7 is hollow section, is arranged between top connection 1 and lower contact 12 by screw thread, its upper end is provided with outer shoulder, its underpart tube wall has fluid hole 7a; Upper piston 9 top is provided with inside and outside shoulder, its underpart tube wall has fluid hole 9a, and the interior shoulder of upper piston 9 is overlapped on the upper surface of piston tube 7, is set with cone 4 on its outer shoulder, and upper piston 9 lower end is connected with lower piston 10 by screw thread; Spring 8 is arranged in the outer shoulder of piston tube 7, cavity between upper piston 9 and lower piston 10; Lower piston 10 upper end is provided with interior shoulder, is sleeved on the upper surface of piston tube 7 outer wall and lower contact 12, is fixed on the outer tube wall of lower contact 12 by shear pin 11.
Described upper piston 9 is provided with sealing ring 5 with the top of fluid hole 1a, piston tube 7 and the contact surface of upper piston 9 inner tubal wall are provided with sealing ring 5, lower piston 10 and fluid hole 7a top are provided with sealing ring 5, and lower contact 12 and the contact surface of lower piston 10 are provided with sealing ring 5.
During construction, the utility model is connected with flow string, top connection 1 top connected pipes, lower contact 12 bottom connected pipes or related tool, under tubing string behind precalculated position, suppress in oil pipe, under pump function, cut off shear pin 11, liquid is through the fluid hole 1a of top connection 1 and the fluid hole 7a of piston tube 7 promotes upper piston 9 and lower piston 10 is up, continue pressurization, Compress Spring 8, promote cone 4 up, make slips 3 radial dilatation, until be firmly stuck on internal surface of sleeve pipe; When need take out instrument, stop suppressing, under the effect of spring 8 elastic force, lower piston 10, upper piston 9 and cone 4 are descending, and slips 3 shrinks under gravity, no longer grappling sleeve pipe, can take out flow string.

Claims (4)

1. an oil tube anchor device, be made up of top connection (1), slips (3), drive unit and lower contact (12), it is characterized in that: top connection (1) is hollow section, upper end is tubing thread, outer tube wall is provided with outer shoulder, its underpart tube wall has fluid hole (1a); Slips (3) is lobe shape structure, and be fixed on the outer tube wall of the outer shoulder bottom of top connection (1) by slips bearing pin (2), slips (3) bottom is pyramidal structure, and outer wall is dentation; Drive unit is one group of piston, and screw thread is arranged in lower contact (12), and upper piston area is set with a cone (4), and cone (4) top tapering is identical with slips (3) bottom tapering.
2. a kind of oil tube anchor device according to claim 1, is characterized in that: top connection (1) is radially evenly distributed with two, three or four slips (3).
3. a kind of oil tube anchor device according to claim 1, it is characterized in that: drive unit is one group of piston, be made up of piston tube (7), spring (8), upper piston (9), lower piston (10), piston tube (7) is hollow section, be arranged between top connection (1) and lower contact (12) by screw thread, its upper end is provided with outer shoulder, its underpart tube wall has fluid hole (7a); Upper piston (9) top is provided with inside and outside shoulder, its underpart tube wall has fluid hole (9a), the interior shoulder of upper piston (9) is overlapped on the upper surface of piston tube (7), is set with cone (4) on its outer shoulder, and upper piston (9) lower end is connected with lower piston (10) by screw thread; Spring (8) is arranged in piston tube (7) outer shoulder, cavity between upper piston (9) and lower piston (10); Lower piston (10) upper end is provided with interior shoulder, is sleeved on the upper surface of piston tube (7) outer wall and lower contact (12), is fixed on the outer tube wall of lower contact (12) by shear pin (11).
4. a kind of oil tube anchor device according to claim 3, it is characterized in that: upper piston (9) is provided with sealing ring (5) with the top of fluid hole (1a), piston tube (7) and the contact surface of upper piston (9) inner tubal wall are provided with sealing ring (5), lower piston (10) and fluid hole (7a) top are provided with sealing ring (5), and lower contact (12) and the contact surface of lower piston (10) are provided with sealing ring (5).
CN201420470990.0U 2014-08-20 2014-08-20 A kind of oil tube anchor device Active CN204098834U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420470990.0U CN204098834U (en) 2014-08-20 2014-08-20 A kind of oil tube anchor device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420470990.0U CN204098834U (en) 2014-08-20 2014-08-20 A kind of oil tube anchor device

Publications (1)

Publication Number Publication Date
CN204098834U true CN204098834U (en) 2015-01-14

Family

ID=52267271

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420470990.0U Active CN204098834U (en) 2014-08-20 2014-08-20 A kind of oil tube anchor device

Country Status (1)

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CN (1) CN204098834U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105178856A (en) * 2015-07-14 2015-12-23 中国石油天然气集团公司 Oil and gas well direction finder
CN106368635A (en) * 2015-07-24 2017-02-01 天津统晟石油科技有限公司 Novel open hole anchor
CN113266290A (en) * 2021-07-08 2021-08-17 大庆市龙兴石油机械有限公司 Mechanical slip tubing anchor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105178856A (en) * 2015-07-14 2015-12-23 中国石油天然气集团公司 Oil and gas well direction finder
CN105178856B (en) * 2015-07-14 2017-06-13 中国石油天然气集团公司 Oil/gas Well finder
CN106368635A (en) * 2015-07-24 2017-02-01 天津统晟石油科技有限公司 Novel open hole anchor
CN106368635B (en) * 2015-07-24 2019-08-13 山东四通石油技术开发有限公司 A kind of novel open hole well anchor
CN113266290A (en) * 2021-07-08 2021-08-17 大庆市龙兴石油机械有限公司 Mechanical slip tubing anchor
CN113266290B (en) * 2021-07-08 2022-06-28 大庆市龙兴石油机械有限公司 Mechanical slip tubing anchor

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