惠民凹陷临南斜坡带成藏条件分析

Hydrocarbon Accumulation Conditions in Linnan Slope Belt of Huimin Depression

为了探讨惠民凹陷临南斜坡带的勘探前景,挖掘研究区下步勘探潜力,对临南斜坡带下第三系烃源岩的有机质丰度、类型、成熟度进行了评价,分析了沙四段、沙三下亚段、沙三中亚段、沙三上亚段、沙二段共5套储集层的特征,进行了储盖组合分类,综合分析了构造油藏、岩性油藏、复合油藏的油藏特征及分布规律,通过分析得出研究区已发现的油藏以构造油藏为主,岩性油藏也具有很大的勘探空间,下步勘探应加强断层切河道砂油藏、三角洲前缘滑塌浊积体形成的透镜状油藏的研究。

According to study the exploration prospects in Linnan slope belt in Huimin Depression,tap the potential of next exploration for this area,the organic carbon abundance,types and maturity of source rocks of Tertiary system in Linnan slope belt were evaluated,the reservoir characteristics of Es4,the lower member,the middle and the upper members of Es3 and Es5 were analyzed,the reservoir-cap rocks assemblage was classified the reservoir characteristics and distribution rules of the structural reservoirs,lithologic reservoirs were studied synthetically.Through the analysis above,it is found out that the reservoir is primarily the structural reservoir,the lithologic reservoir has great potential,the future research is emphasized on channel sandstone reservoirs cut by fault and lenticular reservoir formed by delta front slump turbidity.