An automatic drilling machine and drilling method for sampling mud formation

Abstract

The invention provides an automatic drilling machine and drilling method for sampling mud formations, including a supporting device, an isolating device and a drilling device; the supporting device is provided with an isolating device through a spiral connection inside, and a drilling device is provided on the outer wall of the supporting device. device, and the drilling device is located directly above the isolation device; the present invention can solve the problem that the silt layer on the surface is easy to leak in the well hole during the sampling drilling process that currently exists in the sampling drilling process in the muddy ground, thereby It affects the continuous operation of sampling drilling work, and the sampling drilling process is carried out in silt ground, which makes it difficult to maintain stability during the working process of drilling machinery, thus affecting the stable work of drilling machinery, and the ore and soil that are rotary cut during sampling drilling process. When the downhole is raised, it is difficult to discharge from the drill bit, which affects the normal work of the drill bit and other issues.

Description

technical field [0001] The invention relates to the technical field of drilling, in particular to an automatic drilling machine and a drilling method for sampling mud formations. Background technique [0002] The work of using mechanical equipment or manpower to drill the stratum into holes from the ground is called drilling, which usually refers to the engineering of drilling boreholes and large-diameter water supply wells for the exploration or development of liquid and gaseous minerals such as oil and natural gas; drilling is used in national economic construction. With the development of science and technology, the current drilling project mainly uses the drilling platform for drilling work; but before the official mining drilling, it is usually necessary to sample the well, analyze the samples taken out, and then set up when the mining conditions are met. The drilling platform is officially mined, but there is no mature and unified sampling rig equipment at present, bec...

AI Technical Summary

Problems solved by technology

[0002] The work of using mechanical equipment or manpower to drill the stratum into holes from the ground is called drilling, which usually refers to the engineering of drilling boreholes and large-diameter water supply wells for the exploration or development of liquid and gaseous minerals such as oil and natural gas; drilling is used in national economic construction. With the development of science and technology, the current drilling project mainly uses the drilling platform for drilling work; but before the official mining drilling, it is usually necessary to sample the well, analyze the samples taken out, and then set up when the mining conditions are met. The drilling platform is officially mined, but there is no mature and unified sampling rig equipment at present, because the sampling site may be dry ore ground or muddy ground, and the performance requirements of sampling rig equipment for different sampling sites are also different; During the sampling drilling process, there are mainly the following problems: during the sampling drilling process, the silt layer on the surface is easy to leak into the wellbore, thereby affecting the continuous operation of the sampling drilling work, and the sampling drilling process is carried out in the muddy ground, resulting in It is difficult to maintain stability during the working process of drilling machinery, which affects the stable operation of drilling machinery, and it is difficult to discharge from the drill bit when the rotary-cut ore and soil in the sampling drilling process are raised from the drill bit, thus affecting the normal work of the drill bit

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