Acoustic-wave measurement while drilling system and method for underground coal mine anti-explosion drilling track

Abstract

The invention relates to a drilling track measurement system and method, in particular to an acoustic-wave measurement while drilling system and method for the underground coal mine anti-explosion drilling track. The system comprises in-hole equipment used for collecting and sending drilling track parameters in real time and orifice equipment used for receiving the drilling track parameters sent by the in-hole equipment in real time and forming and displaying a drilling track curve. The drilling track parameters are transmitted between the in-hole equipment and the orifice equipment through an anti-explosion acoustic wave generator and an anti-explosion acoustic wave receiver, and the anti-explosion acoustic wave generator and the anti-explosion acoustic wave receiver are used in pair. Accordingly, the system has the following advantages that 1, the structure is simple and compact, the size is small, and the system is suitable for underground coal mine drilling jigs of various specifications; 2, the underground coal mine drilling process is not changed, and the price is low; and 3, the anti-explosion design is adopted, and the system can work in an underground coal mine explosive gas atmosphere.

Description

technical field [0001] The invention relates to a drilling track measurement system and method, in particular to an explosion-proof drilling track acoustic wave measurement system and method in coal mines while drilling. Background technique [0002] Borehole trajectory measurement while drilling is a technical abbreviation for real-time measurement of drilling (hole) trajectory parameters during the drilling process. In the known technology, the drilling trajectory measurement while drilling technology has long been recognized by people. The drilling trajectory measurement system is divided into wired type and wireless type according to the signal transmission mode. The wired type is relatively simple and cheap, but it needs to connect a cable between the in-hole equipment and the orifice equipment to facilitate signal transmission, which has poor reliability and has special requirements for the connected drill, and cannot realize rotary drilling (hole) Require. The wire...

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Problems solved by technology

[0005] The present invention mainly solves the problems existing in the prior art, such as bulky size, short working time, slow transmission signal, high requirement on drilling stability and high requirement on mud sand content, which cannot be applied in the fields of conventional drilling and soft coal seam drilling. To solve the technical problems, a system and method for acoustic wave measurement while drilling of underground explosion-proof drilling in coal mines are provided.

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