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Energy-gathered fracturing tool

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

Active Publication Date: 2020-11-10
CHINA UNIV OF PETROLEUM (BEIJING)
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  • 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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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

The invention provides an energy-gathered fracturing tool. The tool comprises a shell with a cavity, a sealing piece and a first elastic piece. The shell is provided with an inlet end and an outlet end, a groove is formed in the inner wall of the shell, the sealing piece is arranged close to the inlet end, and the first elastic piece is arranged close to the outlet end; the sealing piece is provided with a pin matched with the groove and a second elastic piece for providing thrust for the pin; the pressure of a fracturing medium enables the pin to be sheared, when the sealing piece moves relative to the shell and compresses the first elastic piece, the cavity is in a through state, and the fracturing medium flows out of the outlet end; and when the first elastic piece and the second elastic piece are matched to push the pin into the groove, the cavity is in a blocked state. The energy-gathered fracturing tool provided by the invention can carry out energy-gathered fracturing operationfor multiple times, the whole process is simplified, and the fracturing operation time can be shortened.

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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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)
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