Unlock instant, AI-driven research and patent intelligence for your innovation.

Ball seat of pitching open type sliding sleeve, its manufacturing method and sliding sleeve

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

Active Publication Date: 2018-08-03
CHINA PETROLEUM & CHEM CORP +1
View PDF6 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ball seat of pitching open type sliding sleeve, its manufacturing method and sliding sleeve
  • Ball seat of pitching open type sliding sleeve, its manufacturing method and sliding sleeve
  • Ball seat of pitching open type sliding sleeve, its manufacturing method and sliding sleeve

Examples

Experimental program
Comparison scheme
Effect test

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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to a ball seat of a pitching open type sliding sleeve, its manufacturing method and the sliding sleeve. The ball seat of the ball-throwing open sliding sleeve includes: a cylindrical body and a pressure-bearing sleeve installed in the cylindrical body, and the pressure-bearing sleeve includes a main body that covers and fits the inner surface of the cylindrical body. The corrosion resistance of the cylindrical body is inferior to that of the pressure sleeve. In the liquid environment in the well, the ball seat can quickly fall off by itself, thereby avoiding the need to drill out 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
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