多射孔压裂对水力裂缝扩展规律的影响
马许平,曾庆利

Influence of multi-perforation fracturing on the regularity of hydraulic fractures propagation
Xuping MA,Qingli ZENG
图4 同步压裂时最小主应力等值线(红圈为两注射孔分别引起的地应力变化重叠部分)
Fig.4 Contour map of minimum principal stress during synchronous fracturing(The red circle is the overlapping area of in-situ stress changes caused by two perforations)