Primary coal and tectonic coal composite coal bed gas fracturing mining method

• Main Authors: LIU WEI, ZHANG XIONG, WU ZHANGLI, GUO ZHIJUN, WEI YUANLONG, ZHAO LINGYUN, HAN ZHONGQIN, ZHOU PEIMING
• Format: Patent
• Language: Chinese; English
• Published: 05.07.2022
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS

The invention provides a primary coal and tectonic coal composite coal bed gas fracturing mining method which comprises the steps that well drilling, casing running and fixing of horizontal wells are conducted on underlying stratums of an upper primary coal bed and a lower tectonic coal bed respecti...