东营凹陷网毯式油气成藏体系油气运聚探讨

运用网毯式油气成藏体系的新理论,对东营凹陷中浅层的输导层及其油气运移特征、所对应的网毯输导体系中的油气成藏过程进行了分析。结果表明,对油气运移起重要作用的输导层主要有连通砂体和断层,连通砂体包括仓储层和其下与之相连的三角洲前缘砂体,断层对油气的输导作用不仅与断层的级别和类型有关,还与断层的幕式活动有关。根据其油气聚集的特征,可将该区油气藏划分成仓储层和聚集网层两大类9种油气藏类型。

Discussion on petroleum migrating and accumulating of meshwork-carpet type oil and gas pool-forming system in Dongying depression

By using the theory of meshwork-carpet type oil and gas pool-forming system, the migration layer and its migration character, the course of oil and gas pool-forming of meshwork-carpet transport system of the middle-shallow layer in Dongying depression were analyzed. The results show that the migration layer contains faults and connected sandstones. Faults play an important role in the petroleum migration, and connected sandstones contain storage layer and delta-front sandstones. The transport ability of faults is associated with not only the size and type but also their activity. According to the character of hydrocarbon accumulation in storage layer and meshwork layer of accumulation, two types of storage layer and meshwork layer of accumulation are classified, which contain nine sub-types.