反转断层反转率的计算及在济阳坳陷的应用

INVERTED RATE CALCULATION OF INVERTED FAULT AND ITS APPLICATION IN JIYANG DEPRESSION

反转断层是具有重要油气勘探意义的一种叠加构造样式,与油气的生成、运移和聚集有着密切的关系。随着反转构造中油气勘探成功率的提高,反转断层越来越受到石油地质学家和构造地质学家的重视。从反转率的角度研究反转断层及其特征,着重分析了Williams和宋廷光对断层反转率的定义,总结反转断层反转率的计算方法,并应用于济阳坳陷断层的研究中,认为反转断层的受力具有继承性,一级边界反转断层继承并反映断陷盆地的主要应力,各次级反转断层继承并反映凹陷内部接受的复杂的局部应力。

As a superposed tectonic mode with significance for petroleum exploitation, inverted fault has close relations with formation, transportation and accumulation of oil-gas. Recently, it has been drawn more and more attention from geologists for increased success rate of oil-gas exploitation in inverted structures. In the paper we studied inverted fault characteristics in the view of inverted rate, analyzed the definitions of inverted rate by Williams and Song separately, and summarized the calculation methods of inverted rate to apply in the research of Jiyang Depression. It was concluded that there exists succession of stress of inverted fault, and primary boundary inverted faults succeed and reflect the main stress, and secondary boundary inverted faults succeed and reflect the complicated local stress accepted in the inside depression.