东辛油田底辟伴生构造的形成机制与地球物理特征  

Forming mechanism and geophysical features of associated diapir structure in Dongxin Oilfield

作　　者：张欣[1,2] 温志峰[2] 王伟[2] 崔小朵[2] 

机构地区：[1]中国科学院地质与地球物理研究所,北京100029 [2]胜利油田地质科学研究院,山东东营257000

出　　处：《中国石油大学学报（自然科学版）》2010年第5期32-37,共6页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家自然科学基金项目(40503003);教育部博士点基金项目(20030425008)

摘　　要：依据东辛油田高精度三维地震资料的精细解释结果对东辛油田底辟伴生构造形成机制和地球物理特征进行研究。结果表明:'Y'型断裂组合是东辛油田底辟伴生构造的普遍断裂样式,'X'型断层组合是形成断裂系统的主要因素;'X'型断层有两种切割方式,一种是在拱张集中区顶部出现,发生在同级或不同级断层间,另一种是在大断层为通道的拱张力作用造成的切割关系;断层的受力强弱应放在一定时间段来分析,在某一时间段低级序断层受到的应力会大于高级序断层,并切割高级序断层,这种新认识可以解释以往作多个砂层组图时出现的矛盾,也将一些被切断层的级序提高,有利于断层封堵性研究和合理的解释油水关系。The forming mechanism and geophysical characteristics of associated diapir structure in Dongxin Oilfield were studied based on the seismic interpretation results of high-precision three-dimensional seismic data. The results show that ＂Y＂-type fault combination is the common associated diapir structure in Dongxin Oilfield,and ＂X ＂type fault combination is a major factor in the formation of fault system. ＂X＂-type faults,there are two cutting methods,one of which appears in the concentration area at the top of arch,taking place at the same grade or different grade faults; the other one is caused by tension at major faults in the arch for the passage. The pressure change of faults should be analyzed during fixed period. The pressure on lower grade faults is bigger than that on higher grade faults during certain period,and lower grade faults could cut through higher grade faults. This interpretation could solve multi-department structure mapping of the confusion,and some of the sequence was cut off grade level to improve, which could help in fault sealing analysis and reasonable interpretation of relations between oil and water.

关 键 词：底辟伴生构造 东辛油田 断层切割 开发动态 

分 类 号：P542[天文地球—构造地质学]