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Shaped fracturing tools

A tool and energy-gathering technology, applied in wellbore/well components, production fluids, earthwork drilling, etc., can solve the problems of cumbersome fracturing process, and achieve the effect of reducing fracturing operation time and simplifying the overall process.

Active Publication Date: 2021-09-07
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With this method, every time fracturing, it is necessary to throw balls into the inside of the fracturing string to form a seal, and then pump in CO 2 , the overall fracturing process is relatively cumbersome

Method used

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  • Shaped fracturing tools
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Examples

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Embodiment Construction

[0040] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope. After reading the present invention, those skilled in the art will understand the present invention Modifications of various equivalent forms fall within the scope defined in the present application.

[0041] It should be noted that when an element is referred to as being “disposed on” another element, it may be directly on the other element or there may also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions are for the purpose of illustration on...

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Abstract

This specification provides a concentrated energy fracturing tool, comprising: a housing with a cavity, the housing has an inlet end and an outlet end, grooves are provided on the inner wall of the housing; A sealing member and a first elastic member arranged near the outlet end; the sealing member is provided with a pin matching the groove and a second elastic member providing thrust for the pin; the pressure of the fracturing medium makes the When the pin is sheared, when the sealing member moves relative to the housing and compresses the first elastic member, the cavity is in a through state, and the fracturing medium flows out from the outlet port; when the When the first elastic member cooperates with the second elastic member to push the pin into the groove, the cavity is blocked. The energy-concentrated fracturing tool provided in this manual can perform multiple energy-concentrated fracturing operations, simplify the overall process, and reduce the fracturing operation time.

Description

technical field [0001] The invention relates to the technical field of petroleum and natural gas engineering, in particular to an energy-gathering fracturing tool. Background technique [0002] The statements in this section only provide background information related to the present disclosure and may not constitute prior art. [0003] my country is rich in low-permeability oil and gas reserves and shale oil and gas resources. However, due to the characteristics of low permeability of reservoirs, it brings great difficulty to the development of reservoirs. At present, fracturing technology is usually used to improve the permeability of reservoirs. Fracturing technology is to inject fracturing fluid into the formation during the process of oil or gas production, and artificially create fractures in the formation, thereby improving the flow conditions at the bottom of the oil well and increasing the production of the oil well. Conventional hydraulic fracturing can achieve cer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/26
CPCE21B43/26
Inventor 王海柱闫万卷田守嶒刘铭盛李敬彬史怀忠杨睿月
Owner CHINA UNIV OF PETROLEUM (BEIJING)