Coal seam directional long drill hole uniform staged hydraulic fracturing pressure relief method

The invention relates to a coal seam directional long drill hole uniform staged hydraulic fracturing pressure relief method, which belongs to the technical field of hydraulic fracturing pressure relief, and comprises the following steps: step 1, acquiring a coal seam firmness coefficient f, a coal s...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ZHANG YUMING, ZHANG ZHAOYI, MA ZHENGHENG, CHAO JIANWEI, LIU JIAN, LU ZHANJIN, WU WENBIN, FU JUNHUI, TAO TAO, ZHANG XIUFENG, PAN XUESONG, WANG RAN, LI RIFU, CHEN YANG, YAO ZHUANGZHUANG, QIN FENGYUAN, LI LIANGWEI, NING ERQIANG, LI SHUAI, MA SHUYIN, SUN PENG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS MINING MINING OR QUARRYING
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