FIELD: manufacturing technology.
SUBSTANCE: in this method, the gyroscope and the endoscopic chamber are used for the first time to study the coal bed strike trend, the coal bed fall tendency and the coal bed thickness data in the area used for extraction. In compliance with standard requirements of gas extraction in area used for production, wells are designed and constructed, and well profiles are monitored to obtain compliance between designed well parameters and actual parameters of well profile. Then drilling parameters are corrected in compliance with correlation between designed well parameters and well actual parameters for construction of wells at preset locations. Thereafter, the wells are connected to the gas discharge pipeline, and the gas flow rates and the gas production volume per meter of the well are monitored. As a result, other wells are designed and constructed in accordance with corrected parameters of well design and production data. After construction wells are connected for gas production.
EFFECT: method for accurate extraction of mine gas is suitable for improving accuracy of design and development of mine gas production and ensuring efficiency of production from wells.
6 cl, 2 tbl, 5 dwg
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Authors
Dates
2019-03-21—Published
2017-12-04—Filed