黄骅坳陷孔店南部枣Ⅲ油组物源分析

摘要

In order to depict the provenance system of Zao Ⅲ reservoir group in southern Kongdian region and predict the sand-body distribution between Zaoyuan and Wangguantun development zones, as well as to promote further exploration and provide a theoretic base for development, Comprehensive application of geophysics, geochemistry and sedimenlology to depict precisely the provenance system in Zao Ⅲ period is needed. By comprehensive research of regional gravity anomaly, seismic attribute, heavy mineral cluster analysis, light mineral analysis, analysis of debris, and sand-body dispersions system in southern Kongdian, Huanghua Depression, six fans were described precisely in western Cangxian uplift, northern Kongdian Salient and eastern Xuhei Salient. To integrate the relationship among the provenance system, the strata, ancient landform and the structure characteristics, the provenance system in ZaoⅢ period of Kongdian group in southern Kongdian region of Huanghua Depression is controlled by ancient landform characteristics, synchronous fractures and basin margin bedrock.%为精确刻画孔店南部地区枣Ⅲ油组物源体系的展布,预测枣园开发区与王官屯开发区之间的砂体展布,进一步促进勘探的突破,必须综合运用地球物理、地球化学、沉积学的方法对孔店南部枣Ⅲ油组物源体系进行精确刻画.通过对黄骅坳陷孔店南部的区域重力异常、地震属性特征、重矿物聚类分析、轻矿物分析、岩屑特征分析、砂体分散体系展布的综合研究,精确描绘了来自西部沧县隆起、北部孔店凸起、东部徐黑凸起3个物源方向的6个扇体.通过物源体系与地层、古地貌、构造之间的综合研究,认为黄骅坳陷孔店南部孔店组枣Ⅲ时期物源的展布受古地貌特征、同生断裂和盆缘基岩的控制.