沾化凹陷渤南洼陷油气成藏期分析  

Study on formation stages of oil-gas reservoirs in Bonan subsag,Zhanhua sag

作　　者：卢浩[1] 蒋有录[1] 刘华[1] 张怀吉[2] 刘雅利[3] 

机构地区：[1]中国石油大学(华东)地球科学与技术学院,山东青岛266555 [2]中国石化股份胜利油田分公司河口采油厂,山东东营257200 [3]中国石化股份胜利油田分公司地质科学研究院,山东东营257015

出　　处：《油气地质与采收率》2012年第2期5-8,111,共4页Petroleum Geology and Recovery Efficiency

摘　　要：综合盆地构造演化、烃源岩成熟度、油藏流体性质及储层流体包裹体等资料,利用生排烃期分析法、油藏饱和压力分析法及流体包裹体均一温度分析法,分别对沾化凹陷渤南洼陷油气成藏期进行研究。结果表明:渤南洼陷烃源岩在东营组沉积早期开始生烃,其油藏多在馆陶组沉积末期—明化镇组沉积早期成藏;油气成藏期主要分为2期,东营组沉积中期有少量油气在渤南洼陷中心沙四段储层中运聚成藏,大规模油气聚集发生于中新世末期至上新世,以上新统明化镇组沉积中晚期为主。不同层系、不同构造单元中油气藏的主要形成期存在差异,以烃源岩中的岩性油气藏形成时间较早;自下而上,由洼陷中心向边缘,油气藏的主要形成期有逐渐变晚的趋势。Based on fault and trap development history,reservoir saturated pressure,hydrocarbon generated and hydrocarbon expulsed process of hydrocarbon source rock,reservoir fluid inclusion homo generation temperature,the hydrocarbon accumulation stages of oil gas reservoirs in Bonan subsag of Zhanhua are discussed,and the calculation of the accumulation stages of oil gas reservoirs with saturated pressure should be combined with burial history for the area,in which,the denudation is thicker.The results show that the accumulation phases of oil and gas reservoirs in Bonan subsag are mainly divided into two phases,late Oligocene phase and late Miocene to Pliocene phase;and the large scale oil and gas accumulation occurs during late Miocene to Pliocene phase;especially during the middle and late Minghuazhen group.The major formation stages in different layers and different structural units in the reservoir are different;from the bottom to up,from the depression center to the edge of the reservoir,the major formation stages have a trend of being late gradually.

关 键 词：生烃史 饱和压力 流体包裹体 成藏期 渤南洼陷 

分 类 号：TE112.31[石油与天然气工程—油气勘探]