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A self-testing slip packer

A slip packer and self-inspection technology, which is applied in sealing/packing, wellbore/well parts, earthwork drilling and production, etc., can solve the problems of poor technology, long period, high cost, etc., and achieve safe and reliable sealing performance, Simple and fast effect

Inactive Publication Date: 2017-07-11
荆州市赛瑞能源技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a self-inspection sealing slip with a compact structure, which has the function of inspection and sealing, and can realize one-time sealing operation, so as to solve the problems of high cost, long cycle and poor technicality of the existing packer Packer

Method used

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  • A self-testing slip packer
  • A self-testing slip packer
  • A self-testing slip packer

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Embodiment Construction

[0022] The self-sealing slip packer includes an inner center pipe 1 , an outer center pipe 2 , a cylinder sleeve 3 , an outer piston sleeve 4 , a lock ring 5 , slips 6 and a slip sheath 7 . One end of the inner center pipe 1 is threaded with an upper joint 8, and the other end of the inner center pipe 1 is threaded with a lower joint 9;

[0023] The inner central tube 1 between the upper joint 8 and the lower joint 9 is provided with a release claw 11, the inner central tube 1 at one end of the release claw 11 is provided with an outer central tube 2; the other end of the release claw 11 is provided with an inner central tube 1 There is an inner piston sleeve 10, and one end of the release claw 11 is threadedly connected with the outer central tube 2; the other end of the release claw 11 is meshed with the inner piston sleeve 10 through an anchor claw.

[0024] Slips 6 are installed on the outer central tube 2 through a slip sheath 7 and a leaf spring 39; Screw 36 is connecte...

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Abstract

The invention relates to a self-checking and sealing slip packer, which belongs to the field of downhole tools for oil and gas well operations. The packer is composed of an inner center pipe, an outer center pipe, slips and a slip sheath; one end of the inner center pipe is threaded with an upper joint, and the other end of the inner center pipe is threaded with a lower joint; the upper joint and the lower joint An inner piston sleeve, a release claw and an outer central tube are sequentially installed on the inner central tube between them; one end of the inner piston sleeve is threaded with a balance joint, and the inner piston sleeve at the other end of the balance joint is sequentially installed with an upper bushing and a lower bushing There is a bypass joint between the upper bushing and the lower bushing; the upper bushing on the side of the bypass joint is equipped with an upper guide ring, and the spacer is sealed with two sets of rubber tubes when setting to ensure that The sealing performance is safer and more reliable during setting, and has the characteristics of simple and fast operation; it meets the needs of sealing and separating oil layer casings in oilfield production.

Description

technical field [0001] The invention relates to a self-checking and sealing slip packer, which belongs to the field of downhole operation tools for oil and gas wells. Background technique [0002] With the deepening of oilfield development, many oil wells are in the high water-cut development period, and the oil reservoir casings are severely corroded, and problems such as multiple perforations and long-distance leakage often occur, which increases the difficulty of oil and gas production. [0003] In order to solve the problem of casing perforation in oil layers and reduce oilfield losses, water plugging packers are mainly used to seal and separate oil layer casings, and then auxiliary technologies such as casing tie-backs and expansion pipe subsidies are used to repair oil layer casings. . However, since the existing water plugging packer only has a single set of rubber cartridges for setting and there is no device for testing the setting effect in the water plugging pack...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/122
Inventor 马小平肖志兵王琼孙勤海王鲜李荆州陶风张健常成
Owner 荆州市赛瑞能源技术有限公司
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