东濮凹陷与东营凹陷浅层油气成藏条件对比  

Comparison of Shallow Hydrocarbon Accumulation Conditions Between Dongpu Sag and Dongying Sag in Bohai Bay Basin

作　　者：冯阵东[1] 程秀申[1] 刘海磊[2] 王霞田[3] 张效恭[3] 吕兰芳[1] 

机构地区：[1]中国石化中原油田分公司勘探开发科学研究院,河南濮阳457061 [2]中国石油新疆油田分公司开发公司,新疆克拉玛依834000 [3]中国石油新疆油田分公司勘探开发研究院,新疆克拉玛依834000

出　　处：《新疆石油地质》2013年第2期183-185,共3页Xinjiang Petroleum Geology

基　　金：国家科技重大专项(2011ZX05006-004)

摘　　要：对比了东濮凹陷与东营凹陷的石油地质条件,总结出造成两凹陷在油气资源量和空间分布差异的原因。东濮凹陷浅层成藏条件不及东营凹陷优越,有小规模成藏的可能,而且成藏控制因素极为复杂,浅层油气成藏条件差的主要原因有:烃源岩的丰度和品质较差,生成的烃类中天然气所占比例大,不易保存;大量生烃和圈闭定型于东营组沉积期末,油气大量散失;新近纪因生烃量小、断层活动弱,缺乏油气向浅层运移的动力和通道,不利于浅层成藏。By comparisons of the petroleum gevlogic conditions between Dongpu sag and Dongying sag in Bohai Bay basin, the reasons for the differences in hydrocarbon resources and 3D spatial distribution of these two sags are presented. The study shows that Dongpu sag is not as superior as Dongying sag in shallow reservoir-forming condition. It has the possibility of small-scale hydrocarbon accumulation or res-ervoir-forming, trot the control factors are extremely complex. The main reasons are as follows： the abundance and quality of source rocks in Dongpu sag are poor and difficuh for preservation, with a large proportion of natural gas in its generated hydrocarbons; a great quantity ofhydrocarhon generation generation and formed traps appear in late Dongying formation, hence there exist a large quantity of oil and gas dispersion and loss; hecause of little hydrocarbon generation and weak fault activity in the Neogene, the oil and gas migration toward the shallow strata is short of power and channel, and unfavorable for shallow reservoir-forming in this sag.

关 键 词：东濮凹陷 东营凹陷 生烃潜力 油气运移 成藏条件 

分 类 号：TE112.41[石油与天然气工程—油气勘探]