Structural failure mechanism and strengthening method of fracture plugging zone for lost circulation control in deep naturally fractured reservoirs

XU Chengyuan,YAN Xiaopeng,KANG Yili,YOU Lijun,ZHANG Jingyi

Fig. 8. Relationship between particle-particle friction angle (a) particle-fiber friction angle (b) friction angle between plugging zone and the fracture surface (c) and plugging zone pressure.