现代地质Issue(3)：543-550,8.
珠江口盆地恩平凹陷断层特征及其对新近系油气成藏的影响
Structural Features and Its Impacts on Hydrcarbon Accumulation of Neogene in Enping Sag,Pearl River Mouth Basin
摘要
Abstract
There is close contact between fault features and faulted reservoir accumulation,because fault is the main channel of vertical hydrocarbon migration.Based on the analysis of fault features of Enping Sag,the fault is divided into 2 fault systems and 4 kinds of faults in different active stages,and then its structural styles, activities,sealing and its impacts on hydrcarbon accumulation in Neogene are studied.The results show that 7 structural styles were summarized from kinds of faulted belts,in which developing tilting half anticline and anticline are the most favorable traps in hydrocarbon accumulation;The long active faults and the late active faults are the main migration faults of Enping Sag,which play dual role with channel and sealing in hydrocarbon accumulation:its sealing abilities restricted the hydrocarbon column height,and its activities controlled the hy-drocarbon enrichment of drilling traps;So the rules between drilling hydrocarbon enrichment and the migration faults activities of migration period is introduced,that is,1.09 is the critical value of faults activities growing index in migration period;The higher of the growing index is,the stronger of fault's vertical migration abilities is,so the better hydrocarbon accumulation probability in Neogene traps is.关键词
恩平凹陷/断层特征/断层活动性/断层封闭性/构造样式/新近系Key words
Enping Sag/fault feature/fault activity/fault sealing/structural style/Neogene分类
能源科技引用本文复制引用
许新明,陈胜红,王福国,胡坤,于水明,王绪诚,高中亮,刘贤来..珠江口盆地恩平凹陷断层特征及其对新近系油气成藏的影响[J].现代地质,2014,(3):543-550,8.基金项目
“十二五”国家重大专项“大型油气田及煤层气开发”子课题“南海东部海域已证实的富生烃凹陷再评价及新领域勘探方向”（2011ZX05023-001-006）。 （）
