Ball seat of ball injection activated sliding sleeve, manufacture method of ball seat and sliding sleeve

A ball seat and sliding sleeve technology, applied in the field of oil and natural gas exploration, can solve the problems of prolonging the fracturing construction time and bringing construction risks, etc., and achieve the effect of effective sealing and close contact

Active Publication Date: 2016-04-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Drilling operations prolong frac construction time and create construction risks

Method used

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  • Ball seat of ball injection activated sliding sleeve, manufacture method of ball seat and sliding sleeve
  • Ball seat of ball injection activated sliding sleeve, manufacture method of ball seat and sliding sleeve
  • Ball seat of ball injection activated sliding sleeve, manufacture method of ball seat and sliding sleeve

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with accompanying drawing.

[0024] figure 1 A tee 10 (hereinafter referred to as tee 10 ) of a pitching open sleeve according to the present invention is shown in three-dimensional view. Such as figure 1 As shown, the ball seat 10 includes a cylindrical body 11 and a pressure bearing sleeve 20 installed in the cylindrical body 11 . The pressure sleeve 20 is used to accept the pressure holding ball (not shown) thrown into the well, and the cylindrical body 11 is used to connect with the sliding sleeve (not shown) to realize the installation of the ball seat 10 in the sliding sleeve. In one embodiment, a male thread can be provided on the outer surface of the cylindrical body 11 , and a female thread can be provided on a corresponding part of the sliding sleeve, thereby realizing the connection between the ball seat 10 and the sliding sleeve.

[0025] After the fracturing operation is completed, in o...

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PUM

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Abstract

The invention relates to a ball seat of ball injection activated sliding sleeve, a manufacture method of the ball seat and a sliding sleeve. The ball seat comprises a tubular body and a pressure-bearing sleeve mounted in the tubular body. The pressure-bearing sleeve comprises a body attaching to the inner surface of the tubular body in a covering manner. Corrosion resistance of the tubular body is poorer than that of the pressure-bearing sleeve. In an intra-well liquid environment, this ball seat can come off automatically, thus avoiding drilling removal of the ball seat.

Description

technical field [0001] The invention relates to the field of oil and gas exploration, in particular to a ball seat of an open sliding sleeve for throwing balls. The invention also relates to a method of manufacturing such a ball seat and a sliding sleeve comprising such a ball seat. Background technique [0002] Sliding sleeve staged fracturing technology is an important reservoir stimulation technology, which is widely used in the reservoir stimulation construction of unconventional oil and gas resources such as shale gas and coalbed methane. This kind of fracturing technology is realized by tools such as a ball-opening sliding sleeve, a packer, and a pressure ball, among which the ball-opening sliding sleeve is the core device in this fracturing technology, and its structural formula is the first in the field. well known to the skilled person. [0003] The working principle of the ball-throwing open sliding sleeve is to drop a pressure-holding ball at the wellhead, and t...

Claims

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Application Information

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IPC IPC(8): E21B43/26
Inventor 魏辽崔晓杰马兰荣郭朝辉朱和明朱敏涛
Owner CHINA PETROLEUM & CHEM CORP
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