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switch tool

A switching tool and switching technology, which is applied in the direction of mining fluid, wellbore/well parts, earthwork drilling and production, etc., can solve the problems of reduced reliability, easy deformation of lock block spring, low efficiency, etc., to simplify construction steps and improve construction Efficiency, effect of preventing fatigue deformation

Active Publication Date: 2017-02-15
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The present invention provides a switch tool, which overcomes the deficiencies of the prior art mentioned above, and can effectively solve the problem that the switch locking device of the existing sliding sleeve switch tool has directionality. , it needs to run in reverse to close the cementing sleeve, which has the problems of cumbersome construction, time-consuming and labor-intensive work, and low efficiency
[0005] The present invention further solves the problem that the lock block spring of the existing sliding sleeve switch tool is easily deformed due to long-term compression, which reduces the reliability and increases the construction risk

Method used

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Embodiment Construction

[0021] The present invention is not limited by the following examples, and specific implementation methods can be determined according to the technical solutions of the present invention and actual conditions.

[0022] In the present invention, for the convenience of description, the description of the relative positional relationship of each component is described according to the layout of Figure 1 of the specification, such as: the positional relationship of front, rear, top, bottom, left, right, etc. It is determined according to the layout direction of the drawings in the description.

[0023] Below in conjunction with embodiment and accompanying drawing, the present invention will be further described:

[0024] As shown in Figures 1 and 2, the switch tool includes a switch upper joint 1, a switch inner cylinder 2 and a switch lower joint 3, the upper part of the switch inner cylinder 2 is fixedly installed with a switch upper joint 1, and the lower part of the switch inn...

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Abstract

The invention relates to the technical field of opening-closing tools for cementing sliding sleeves in oil and gas drilling, in particular to an opening-closing tool comprising an opening-closing upper connector, an opening-closing inner cylinder and an opening-closing lower connector. The opening-closing upper connector is fixed to the upper portion of the opening-closing inner cylinder. The opening-closing lower connector is fixed to the lower portion of the opening-closing inner cylinder. The outside of the middle of the opening-closing inner cylinder is provided with a lock block mounting recess in which at least three opening-closing lock blocks are evenly distributed along the outer periphery of the opening-closing inner cylinder. The opening-closing tool is reasonable and compact in structure and convenient to use; the opening-closing lock blocks are locked through the opening-closing upper connector and the opening-closing lower connector, unlocking is achieved by driving and pushing the opening-closing upper connector to move up and the opening-closing lower connector to move down, a closing step of the cementing sliding sleeve can be simplified through an opening-closing fastening groove with upper and lower end faces both planes, construction efficiency is improved, the stepped upper guide face of each opening-closing lock block and the stepped lower guide face thereof prevent opening-closing springs from fatigue deformation caused by long-term compression, and safety, reliability, simplicity and high efficiency are achieved.

Description

technical field [0001] The invention relates to the technical field of switch tools for oil and gas drilling and cementing sliding sleeves, and relates to a switch tool. Background technique [0002] At present, with the exploration and development of various unconventional oil and gas reservoirs, casing cementing staged fracturing technology has been more and more recognized and valued, and is widely used in low permeability oil and gas reservoirs, thin layer oil reservoirs, shale gas and coalbed methane The production stimulation of unconventional oil and gas reservoirs has broad application prospects. As a supporting tool in the casing cementing staged fracturing operation, the mechanical switch type cementing sliding sleeve has the characteristics of high switch stability, high sealing and high construction reliability. Compared with the technology of pitching sliding sleeve and hydraulic sliding sleeve, it has unique advantages of simple structure, unlimited number of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B34/06E21B43/26
CPCE21B34/14E21B2200/06
Inventor 陈若铭李晓军张胜鹏赵博张昕王飞跃卢明
Owner BC P INC CHINA NAT PETROLEUM CORP
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