摘要
断层在油气成藏与分布中起到了非常重要的作用。渤南洼陷断层极其发育,除发育油源断层外,还发育次级小断层。断层活动速率分析表明,油源断层在古近纪—新近纪表现为持续性和继承性的活动规律,呈现出2个高峰期,即沙三段上亚段沉积时期的一次大规模活动及沙一段和东营组沉积时期的另一次较大规模活动。结合典型油气藏解剖以及油气成藏史分析发现,该区油源断层的活动期次与烃源岩主排烃期相对应,从而为油气的垂向输导提供了条件。最后,定量研究了作为有效输导油气的油源断层的必要条件。
Fault acts an important role in the hydrocarbon accumulation and distribution.There are lots of faults in Bonan Subsag,such as secondary minor faults besides oil source faults.Analysis on the fault activity velocity(Vf) shows that the oil source faults has sustaining and successive characterization,and there were two larger activity periods in Tertiary:one occurred in the later Es3 period,the other occurred in Es,or Ed period.By studying the history of hydrocarbon accumulation and analyzing typical reservoirs,the authors found that the activity period of the oil source faults was matched with the main hydrocarbon expelling period of source rocks.So it provided conditions for vertical oil-gas transformation.Finally,the necessary conditions are analyzed quantitatively for effective transformation of oil and gas by the oil source faults.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2007年第3期34-37,共4页
Petroleum Geology and Recovery Efficiency
关键词
断层
断层活动速率
油气成藏
渤南洼陷
fault,fault activity velocity,hydrocarbon accumulation,Bonan Subsag
