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Guide rail type intelligent sliding sleeve sieve tube tool

An intelligent sliding sleeve, guide rail technology, applied in the production fluid, wellbore/well components, earthwork drilling and other directions, can solve the problem that the screen can not be guaranteed to be independent and fully opened, the pressure is not easy to control, and the acid fracturing effect is not ideal. and other problems, to achieve the effect of reducing well control risk and operation cost, simple structure and improving open rate

Active Publication Date: 2015-12-09
XINJIANG GANGTUO ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has certain defects and deficiencies. There are many types of tools required, and different levels of opening pressure are required. The higher the pressure gradient level, the greater the risk of well control, and it is not easy to control the pressure. And fully open, the effect of acid pressing is not ideal

Method used

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  • Guide rail type intelligent sliding sleeve sieve tube tool
  • Guide rail type intelligent sliding sleeve sieve tube tool
  • Guide rail type intelligent sliding sleeve sieve tube tool

Examples

Experimental program
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Effect test

Embodiment 1

[0011] Embodiment 1, guide rail type intelligent sliding sleeve screen pipe tool, such as Figure 1-6 As shown, it includes a lifting joint 1 and a housing 2. The lifting joint 1 is a male and female joint. The external thread of the lifting joint 1 is matched with the female thread of the housing 2, so that the sliding sleeve screen tool A closed working chamber is formed inside, and a retractable C ball seat 3, a counting sleeve 4, a positioning sleeve 5, a spring 6, a shear pin 7 and a limit ring 8 are arranged on the housing 2; The end face fit between the ball seat 3 and the lifting joint 1 and the positioning sleeve 5; a housing limit groove is provided in the lower end tube of the housing 2, and the C ball seat 3 and the positioning sleeve 5 can slide in the housing 2 , in the middle section of the housing 2, a number of sieve holes are evenly distributed, and the rear end is provided with a pin hole, and a shear pin 7 is installed in the pin hole; the middle section of...

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Abstract

The invention belongs to the field of full-bore segmented acid fracturing in mining well-completion practice of oil and gas wells, and in particular relates to a guide rail type sliding sleeve sieve tube tool which comprises a lifted joint and a shell, wherein the shell is provided with a retractable C ring ball seat, a counting sleeve, a locating sleeve, a spring, a shear pin and a spacing ring. In an operation process, balls with the same size are always thrown to trigger an ejection device and seal the ball seat. The pressure grade for opening a sieve pore shear pin can not be changed with the change of the segmented grade of acid fracturing, and the pressure of each segment of the shear pin subjected to acid fracturing is same, so that the open rate of a sliding sleeve is increased, the acid fracturing efficiency is increased, and the well control risk and operation cost are further reduced. The tool is simple in design structure, has few components, is convenient to install, relatively saves trouble and labor, and is worthy of being popularized and used in oil and gas fields in China.

Description

technical field [0001] The invention belongs to the field of full-diameter segmental acidizing fracturing in the exploitation and completion of oil and gas wells, and in particular relates to a guide rail type intelligent sliding sleeve screen tool, which is a kind of acid fracturing oil and gas reservoir section that can realize automatic control and opening. And it is a tool to ensure the full diameter of the pipe string. Background technique [0002] At present, in the production and completion operations of oil and gas fields, the tool string of packers, ball-pitching screens and pressure-controlling screens is mainly used to carry out staged acid fracturing to achieve the purpose of oil and gas stimulation. This method has certain defects and deficiencies. There are many types of tools required, and different levels of opening pressure are required. The higher the pressure gradient level, the greater the risk of well control, and it is not easy to control the pressure. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/27E21B43/08E21B34/06
Inventor 叶正权肖志高张延星杨挥林王莉
Owner XINJIANG GANGTUO ENERGY TECH
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