Fracture sliding sleeve component

A technology for fracturing sliding sleeves and sliding sleeves, which is applied in wellbore/well components, production fluids, earthwork drilling and production, etc. It can solve the problems of high pressure resistance performance of sliding sleeve materials, increased operation cycle and operating cost, and processing of sliding sleeves. High precision requirements and other issues, to achieve the effect of shortening the operation cycle, simple and convenient construction operation, and reducing processing difficulty

Active Publication Date: 2014-07-02
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Due to the size difference between sliding sleeves and pressure holding balls at all levels, the number of fracturing stages is limited, and after the fracturing is completed, drilling tools need to be lowered to remove the sliding sleeve ball seat, which increases the operation cycle and operating cost
In addition, the ball-pitc

Method used

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  • Fracture sliding sleeve component
  • Fracture sliding sleeve component
  • Fracture sliding sleeve component

Examples

Experimental program
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Embodiment Construction

[0033] The present invention will be further described below in conjunction with accompanying drawing.

[0034] figure 1 A frac sleeve assembly 10 according to the present invention is shown schematically. The fracturing sliding sleeve assembly 10 includes a housing 11 and a first sliding sleeve 30 and a second sliding sleeve 20 installed inside the housing 11 . The first sliding sleeve 30 is located upstream of the second sliding sleeve 20 , and a bearing 19 is arranged between the first sliding sleeve 30 and the second sliding sleeve 20 . The bearing 19 can only transmit the axial movement of the first sliding sleeve 30 to the second sliding sleeve 20, but cannot transmit the rotation of the first sliding sleeve 30 to the second sliding sleeve 20. This bearing 19 is known to those skilled in the art. Well-known, for the sake of brevity, will not repeat them here.

[0035] A cylindrical guide rod 17 protruding radially inward is fixedly arranged on the upstream part of the...

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Abstract

The invention relates to a fracture sliding sleeve component which comprises a shell, a first sliding sleeve and a second sliding sleeve. The first sliding sleeve and the second sliding sleeve are arranged in the shell. Through cooperation of a guide rod arranged on the shell and a guide rail arranged on the outer surface of the first sliding sleeve, opening and closing of the fracture sliding sleeve component can be achieved. The fracture sliding sleeve component can not be limited in the number of fracture layers, and is simple in operation and wide in application range.

Description

technical field [0001] The invention relates to a fracturing sliding sleeve assembly, in particular to a segmental fracturing sliding sleeve assembly which can be switched repeatedly. Background technique [0002] Sliding sleeve staged fracturing technology is an important means for the exploitation of unconventional oil and gas resources. It is widely used in the fracturing stimulation of vertical wells, directional wells, and horizontal wells in shale gas, low-permeability production layers, and thin oil layers. [0003] At present, the sliding sleeves in the prior art include ball-pitching sliding sleeves, hydraulic sliding sleeves and mechanical switch sliding sleeves. The ball-pitching sliding sleeve is usually used in conjunction with the open hole packer. The outer cylinder of the sliding sleeve and the core pipe are in a sliding fit, and fracturing holes are arranged on the wall of the outer cylinder of the sliding sleeve. Its working principle is that a pressure-ho...

Claims

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Application Information

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IPC IPC(8): E21B43/26E21B34/06
Inventor 郭朝辉朱玉杰马兰荣魏辽崔晓杰谷磊冯丽莹侯乃贺
Owner CHINA PETROLEUM & CHEM CORP
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