Structural Characteristics and Genetic Mechanism of Fracture in Shiwu Oilfield

Hu Li, Qirong Qin, Wenhua Tang, Mingyuan Tang


Based on the core, chip,drilling, Seismic data,etc,Combining the tectonic evolution of shiwu fault, comprehensive study the Charcteristics of Structural, fracture and the genetic mechanism of fracture.after study:on the basis of the reaearch on the Xiaokuan fault and nearby north-south faults,6 secondary structure units are divided.They are: Xiaokuan extrusion and strike-slip zone,Qikeshu syncline belt,Dawujiazi and Xiaowujiazi fault belt,Nanling fault terrace,and Liangjiatun fault terrace.after study on the length and density by Weighting Process, Crack is developed in Shiwu Oilfield;it is affected by five tectonic movements and formed the four periods fracture;extensional directions of these fractures are NE,SN,NW,NNE,NNW,EW, etc.

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