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公开(公告)号：US11174722B2
公开(公告)日：2021-11-16
申请号：US17043728
申请日：2019-10-12
发明人： Enyuan Wang , Hao Wang , Jianchun Ou , Rongxi Shen , Xiyuan Wang , Baolin Li , Zhonghui Li , Xiaofei Liu
摘要： The present invention provides an inversion calculation method of coal-bed gas parameters of fast test while-drilling. The technical solution is that an inversion calculation method of coal-bed gas parameters of fast test while-drilling includes: during drilling in a coal bed, testing a gas flow and a gas concentration of an orifice in real time while-drilling, calculating drilling gas discharge amounts of the orifice, inversely calculating a coal-bed gas pressure at a drill bit based on borehole and coal-bed permeability parameters, and calculating a coal-bed gas content according to a gas content and gas pressure relational expression. The present invention has the beneficial effects that the present invention does not occupy the drilling and drill rod replacement time, is accurate, convenient, real-time and fast, and can test and calculate the coal-bed gas parameters of each section along the whole borehole length.
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公开(公告)号：US10082433B2
公开(公告)日：2018-09-25
申请号：US15318877
申请日：2015-07-31
发明人： Enyuan Wang , Yabo Wang , Xiaofei Liu , Siheng Wang
CPC分类号： G01L5/0004 , E21C39/00 , E21F17/18
摘要： A multipoint coal and rock mass stress real-time monitoring device is provided. The device is composed of a plurality of capsule pressure sensors (1), connection rods (2), three-way valves (3), a multichannel monitor (4), a multichannel control valve (5), first high-pressure oil pipes (6), second high-pressure oil pipes (7), third high-pressure oil pipes (8), a four high-pressure oil pipe (9), a high-pressure oil pump (10) and monitoring substations (11). A multipoint coal and rock mass stress real-time monitoring method is also provided.
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