Underground coal mine anti-explosion mud-pulse wireless measurement while drilling system and using method thereof
A wireless measurement-while-drilling, mud pulse technology, applied in the directions of measurement, earth-moving drilling, wellbore/well components, etc., can solve the problems of large difference, large aperture, poor construction conditions and environment, etc., to achieve compact structure, size Small, simple structure
A wireless measurement-while-drilling, mud pulse technology, applied in the directions of measurement, earth-moving drilling, wellbore/well components, etc., can solve the problems of large difference, large aperture, poor construction conditions and environment, etc., to achieve compact structure, size Small, simple structure
CN102606145AActive Publication Date: 2012-07-25XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP +1
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[0029] see figure 1 , the present invention is composed of explosion-proof probe tube 1, explosion-proof battery cylinder 2, explosion-proof pulse generator 3, explosion-proof pressure transmitter 4, and explosion-proof computer 5, all of which adopt explosion-proof design and can be applied in the explosive gas environment in underground coal mines. After the explosion-proof pulse generator 3 detects the pump-on signal, it controls the explosion-proof probe 1 to collect engineering parameter data in the hole such as drilling trajectory parameters (inclination angle, azimuth angle) and directional drilling tool state parameters (tool facing angle), and the explosion-proof pulse generator 3. After receiving the in-hole engineering parameter data detected by the explosion-proof probe 1, adjust the flow channel area of the hydraulic channel in the drill pipe according to the in-hole engineering parameter data according to the preset coding rules. The change of the flow channel a...
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The invention relates to a measurement while drilling system, in particular to an underground coal mine anti-explosion mud-pulse wireless measurement while drilling system and a using method of the underground coal mine anti-explosion mud-pulse wireless measurement while drilling system. The underground coal mine anti-explosion mud-pulse wireless measurement while drilling system consists of a hole-in assembly and a hole-opening assembly, wherein the hole-in assembly comprises an anti-explosion exploring tube, an anti-explosion battery cylinder and an anti-explosion pulse generator, and the hole-opening assembly comprises an anti-explosion pressure transmitter and an anti-explosion computer and the like. According to the system, in the underground coal mine drilling construction process, a hole-in instrument is utilized for measuring the hole-in engineering parameters such as track parameters (dip angles and azimuth angles) of a drilling hole, state parameters (tool facing angles) of a directional drilling tool and the like in real time, and then the data is transmitted to a hole-opening instrument through a hydraulic channel in a wireless transmission manner and is processed and displayed by the anti-explosion computer at a hole opening. The system takes the mud as a signal carrier, adopts mud pulses as a data transmission mode, does not need to use a cable, not only can be used for directional drilling, but also can be used for rotary drilling, and has a real-time property and an anti-explosion property.
Description
technical field [0001] The invention relates to a measurement-while-drilling system, in particular to an explosion-proof mud pulse wireless measurement-while-drilling system in underground coal mines and a usage method thereof. Background technique [0002] Measurement while drilling is the technical abbreviation for realizing real-time measurement and uploading of downhole (in-hole) information during the drilling (hole) process. In the known technology, the measurement-while-drilling technology of the borehole has long been recognized by people. The measurement-while-drilling system can be divided into wired measurement-while-drilling and wireless measurement-while-drilling according to different information transmission media. At present, there are many applications of measurement-while-drilling systems mainly in the field of oil drilling and underground coal mine drilling. Among them, the wireless measurement-while-drilling system is the most widely used in the field o...
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Patent Timeline
25 Jul 2012
Publication
CN102606145A
- IPC
- E21B47/12; E21B47/022; E21B47/024; E21B49/00
- Inventors
- 石智军; 薛维