Shale gas fracturing method and device

Abstract

The invention discloses a shale gas fracturing method and device. The shale gas fracturing method and device mainly comprises an integrated control system, ground fracturing equipment, a direction control module, a directional drilling machine, a fracturing pump and a shale gas fracturing drill bit; the shale gas fracturing drill bit comprises a three-wing drill bit body, a high-pressure gas guide pipe, a direction control system, an electromagnetic numerical-control valve, an electric lead, an insulating layer and a steering knuckle; and when the device works, the three-wing drill bit body and a steering system are screwed to the target position, after the drilling machine stops, the fracturing direction control system is used for transmitting azimuth information, and the fracturing direction and particular position are determined. The ground fracturing system generates ultra-high-pressure carbon dioxide gas through the gas fracturing pump, the high-pressure gas guide pipe laid inside one side of a drill rod is used for conveying the ultra-high-pressure carbon dioxide gas to the drill bit side, the electromagnetic numerical-control valve controls the fracturing state, and accordingly the fracturing task is finished.

Description

technical field [0001] The invention relates to the technical field of shale gas fracturing, in particular to a shale gas fracturing method and device. Background technique [0002] In the current shale gas fracturing production process, vertical or horizontal drilling is often used to complete large-scale fracturing tasks with complex machinery such as fracturing packers, sliding sleeves, and drillable fracturing plugs. A simple and low-cost drilling and fracturing production method. Today's technical conditions are more suitable for large-scale, high-input regional mining. However, when the first fracturing is insufficient or there are fracturing dead ends, the use of the existing method of mining will undoubtedly not be worth the loss, and the fracturing effect is not good. , The traditional workflow of exiting and refracturing after drilling will also consume more time and cost, and delay the progress of the project. [0003] The nature of shale gas exploitation itself...

AI Technical Summary

Problems solved by technology

[0002] In the current shale gas fracturing production process, vertical or horizontal drilling is often used to complete large-scale fracturing tasks with complex machinery such as fracturing packers, sliding sleeves, and drillable fracturing plugs. Simple and low-cost drilling and fracturing production method

Today's technical conditions are more suitable for large-scale, high-input regional mining. However, when the first fracturing is insufficient or there are fracturing dead ends, the use of the existing method of mining will undoubtedly not be worth the loss, and the fracturing effect is not good. , the traditional workflow of exiting refracturing after drilling will also consume more time and cost, delaying the progress of the project

[0003] The nature of shale gas exploitation itself determines that the fracturing design must be limited by natural fractures and ground stress. The fracturing locations in the design are often on the vertical planes of several main wells, and these locations are difficult to obtain good results by traditional methods. Fracturing effect

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