以构造成因机制研究指导复杂背斜精细解释——柳泉南断背斜形成机理与滚动勘探开发

通过三维地震资料的精细解释落实圈闭，是提高滚动勘探开发成功率的关键，需要结合区域构造特征，深入分析局部构造的成因机制，用对构造形成机制的认识指导构造特细解释，冀中坳陷北部廊固凹陷的柳泉南断背斜在3种构造应力复合作用下形成，被断层切割得非常破碎，东侧的中岔口断层塔地层层面拆离滚脱；与之大体平行、倾向相反的两组旋转式犁面正断层水平挤压和垂向扭动十分强烈；由之诱发的沙三段中下部泥质岩层段局部型性揉皱、以对构造成因机制的认识指导柳泉南断背斜的构造解释，研究地层产状变化规律。合理组合断层，编制构造图。为落实和评价滚动勘探开发目标提供了依据。图5参5。

Structural genesis mechanism guided detailed interpretation of complicated anticline

Locating trap is a key issue in improving drilling success ratio in progressive exploration and development. It needs to integrate structural background and detailed analysis of genesis mechanism of local structure in order to guide detailed interpretation based on 3D seismic data. Liuquan South faulted anticline, Langgu Sag, north Jizhong Depression, was formed by a composite stress of 3 different kinds of structural stresses and was severely faulted. Zhongchakou fault to the east detached along the strata plane. Two groups of rotated listric normal faults, which are roughly parallel to the Zhongchakou fault but with opposite dipping direction, were severely compressed laterally and wrenched vertically. It also induced local plastic crumple of the shale in middle to lower part of Shasan group. Structural genesis mechanism study guided structure interpretation, strata occurrence study, faults grouping and structure mapping of Liuquan South faulted anticline, which helped to find and evaluate progressive exploration and development targets.