System device and method for coal bed gas and measurement while drilling

Abstract

The invention discloses a system device and method for coal bed gas and measurement while drilling. The method comprises the steps that 1, a proper drill rod material is selected; 2, a flexible pressure sensor, a displacement sensor and the like are placed in a drill rod, and meanwhile air outlets are formed; 3, sensor data acquisition equipment is arranged in the drill rod; 4, optical fiber connection is adopted for the data acquisition equipment, optical fibers are conveyed through rollers, and the rollers are connected through bearings; 5, secondary acquisition equipment is arranged in the rollers and connected into the optical fibers; 6, the secondary acquisition equipment gathers data on a workbench through a wireless communication technology; and 7, a supporting structure is adopted for the rollers, when the drill rod is lengthened, the roller devices are lowered to proper positions through chains and sleeved with the drill rod, and drilling continues. According to the system device and method, real-time measurement can be conducted in an optical fiber data transmission mode, closed measurement can be conducted without independently stopping a drilling machine, the drilling time is prolonged, and real-time measurement while drilling is guaranteed.

Description

technical field [0001] The invention relates to a system device and method for coalbed methane and measurement-while-drilling. Background technique [0002] As the third largest storage country of coal, my country has rich coal resources, strong availability of resources, good economical utilization, and a large amount of coal mining. Coal is the basic energy of our country, and coal is an important pillar of my country's economic development. my country accounts for more than half of energy, and my country is also the world's largest producer. According to statistics from the Department of Natural Resources, since 2013, my country's proven coal resource reserves have continued to rise. In 2018, my country's coal proven resource reserves were 1,708.573 billion tons, a year-on-year increase of 2.5%. In 2019, my country's proven reserves of coal resources increased to 1,770 billion tons. As a large coal mining country, my country has a large amount of mining and many mines. Ho...

AI Technical Summary

Problems solved by technology

In 2019, my country's proven reserves of coal resources increased to 1,770 billion tons. As a large coal mining country, my country has a large amount of mining and many mines. However, with the continuous mining of mines, coal seams contain a large amount of coalbed methane. , which also leads to a reduction in the safety factor of mining coal mines, and protective measures need to be taken

[0004] For coalbed methane and measurement while drilling, the data transmission is not timely and the operation is complicated. If the operation is not done properly, drilling equipment problems will occur frequently. Real-time measurement and automatic control are becoming more and more important in engineering. Real-time measurement can receive underground drilling data at any time. The automatic control can save the complicated operation process of the staff, reduce the accidents of the drilling equipment, and improve the drilling efficiency. Therefore, the development of a set of coalbed methane and measurement while drilling system has practical significance for the drilling measurement in the project.

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