A multifunctional shale geological exploration drill bit and its working method

Abstract

A multi-functional shale geological exploration drill bit and its working method, including a drill pipe connection system, an auxiliary power system, a transfer system, a sampling system and a cutting system, which are sequentially connected coaxially from top to bottom, an auxiliary power system and a transfer A locking system is arranged between the outer circles of the system, and a spiral transmission impeller is arranged coaxially inside the auxiliary power system and the transfer system. The present invention can work at the wellhead under the power transmission through the drill pipe, and can also complete the acquisition of shale samples through the force application system of the drill bit itself, providing a new technical means for the exploration and development of shale; the components in the present invention are easy to install It has the functions of sampling and drilling. It can use the drilling and rotating power of the drill pipe, or it can use its own power to operate.

Description

technical field [0001] The invention relates to a shale oil and gas exploration mechanical equipment, in particular to a multifunctional shale geological exploration drill bit and a working method thereof. Background technique [0002] Shale oil and gas is a kind of unconventional oil and gas resources. It is widely distributed all over the world, and it is also widely distributed in China. It has broad development potential. However, the degree of exploration in my country is still relatively low. One of the main reasons is that geological complexity has increased. The difficulty of exploration and development. Geological exploration sampling is an effective means to obtain the geological conditions of underground shale. At present, geological exploration sampling is mainly connected to ordinary drill bits through drill pipes, and power is applied through the wellhead, which is transmitted to the drill bit through the drill pipe, so that the drill bit cuts and impacts the fo...

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Problems solved by technology

[0002] Shale oil and gas is a kind of unconventional oil and gas resources. It is widely distributed all over the world, and it is also widely distributed in China. It has broad development potential. However, the degree of exploration in my country is still relatively low. One of the main reasons is that geological complexity has increased. The difficulty of exploration and development

Geological exploration sampling is an effective means to obtain the geological conditions of underground shale. At present, geological exploration sampling is mainly connected to ordinary drill bits through drill pipes, and power is applied through the wellhead, which is transmitted to the drill bit through the drill pipe, so that the drill bit cuts and impacts the formation. In deep wells and the geology is relatively complex, power is applied entirely by the wellhead, which may cause excessive torsional deformation of the drill pipe, or even direct torsion. Therefore, it is urgent to design a multifunctional drill bit that can provide cutting and impact power by itself. is of great significance

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