Occurrences and forms of hydraulic fractures in drilling wells are analyzed for extraction of coalbed methane(CBM).The determination basis of dips,strikes and shapes of the fractures are presented.
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乌效鸣.煤层气井水力压裂裂缝产状和形态研究[J].钻探工程,1995,(6):19-21.Wu Xiaoming. Study on Occurrences and Shapes of Hydraulic Fractures Formed in CBM Wells[J]. Drilling Engineering, 1995,(6):19-21.