Online published: 2008-03-15
Based on the interpretation to Es3, Es2, lower Es1, middle Es1, upper Es1 and the bottom of Ed in Qianquan area, Banqiao Sag, the plane distribution of the faults is analyzed. The growth index, activity rate and paleo fall of fault are applied to study the fault activity. The result shows that there developed two vertical normal faults towards NE and NW respectively in Qianquan area, among which Cangdong fault is first order fault, Dazhangtuo fault and G39 fault are second order fault, the others are third order fault, with most of the dip angles being from 55 degree to 70 degree. These three indexes indicate that most of the main faults in the study area experienced two evolution stages, and each was fromweak to strong and became weak again.
Key words: reservoir; rock; stress sensitivity; primary deformation; structural deformation
LI Chuanliang , TU Xingwan . Activity analysis of main faults in Qianquan area, Banqiao Sag[J]. Lithologic Reservoirs, 2008 , 20(1) : 75 -82 . DOI: 10.3969/j.issn.1673-8926.2008.01.013
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