Slide Switch Tool

A sliding sleeve switch and tool technology, which is applied in the direction of mining fluid, wellbore/well parts, earthwork drilling and production, etc., can solve the problems of affecting service life and high running resistance, so as to prolong service life, avoid obstruction and realize safety The effect of recycling

Active Publication Date: 2018-06-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of mechanical switch tool has a large resistance to running in, which affects the service life

Method used

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Examples

Experimental program
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Embodiment Construction

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] figure 1 The structure of the slide switch tool 1 according to the first embodiment of the present invention is schematically shown. like figure 1 As shown, the sliding sleeve switch tool 1 includes a cylindrical body 22 having a radially outwardly projecting shoulder 48 disposed on the outer surface of the cylindrical body 22 . Thereby, the cylindrical body 22 is divided into the upstream portion 4 and the downstream portion 5 . The end of the upstream portion 4 of the cylindrical body 22 is connected to the upper joint 2 , and the end of the downstream portion 5 is connected to the lower joint 3 . The cylindrical body 22 , the upper joint 2 and the lower joint 3 are all hollow structures, so that the interior of the cylindrical body 22 can be filled with hydraulic fluid.

[0027] Sliding switch tool 1 also includes a sliding sleeve 60 (see Figure 7 ) engag...

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PUM

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Abstract

The invention relates to a sliding sleeve switch tool. The sliding sleeve switch tool includes a cylindrical body for holding hydraulic fluid; a table shoulder radially protruding outward is arranged on an outer surface of the cylindrical body so as to divide the cylindrical body into an upstream portion and a downstream portion; a lock block is arranged in the inner part of the upstream portion; the lock block includes a guide slope positioned at the downstream area of the lock block; a first elastic member is arranged between the lock block and the upstream portion; a guide housing sleeves the downstream portion; the guide housing includes a guide end which is positioned on the upstream area of the guide housing and has an interaction with the guide slope, and a stress structure which is positioned on the downstream area of the guide end; the stress structure can bear a first hydraulic pressure toward downstream or a drive force toward upstream so as to allow the guide housing to move axially; when the guide end moves toward downstream, the lock bock protrudes; and when the guide end moves toward upstream, the lock block retracts.

Description

technical field [0001] The invention relates to the field of petroleum exploration and development, and more particularly to a sliding sleeve switch tool. Background technique [0002] In petroleum exploitation technology, switch-type sliding sleeve is a commonly used downhole tool in the fields of staged fracturing and completion, layered exploitation and sand control of oil and gas wells. This kind of sliding sleeve needs to be opened and closed by using the corresponding switch tool, so that according to the fluid production situation of the production layer, the fracturing hole can be selectively closed, so as to achieve the purpose of layered plugging test and production, and improve the efficiency of the fracturing process. practicality. In particular, for horizontal wells, for example, when water is produced in a production layer, the sliding sleeve or multiple sliding sleeves where the water-producing interval is located can be closed to reduce the impact of bottom ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B34/14E21B43/26
Inventor 朱玉杰朱和明马兰荣魏辽张瑞
Owner CHINA PETROLEUM & CHEM CORP
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