东营凹陷南斜坡输导体系发育特征

济阳坳陷东营凹陷南斜坡广泛发育断裂、砂体和不整合面等多种类型输导层，构成复杂的立体网络通道。以断层为垂向运移通道的油气藏常在断层带附近多层叠置；以连通砂体为主要运移通道的油气藏常形成于距烃源层较近或相邻的层位；不整合面作为运移通道往往可使油气长距离运移形成各种地层油气藏。东营凹陷南斜坡的油气藏都是油气经过两种或多种输导层阶梯式运移而形成的，多个不整合面、油源断层以及各层系储集砂体的空间配置对油气分布的控制方式很复杂，砂体、断层和不整合面组成的输导系统的末端和边缘往往是油气运移的重要指向区。图5参15

Development of carrying bed systems in the south slope of Dongying Sag

The south slope of Dongying Sag, Jiyang Depression, develops various kinds of carrying beds, including faults, sand bodies and unconformities, which formed the complex solid network paths. The oil reservoirs whose hydrocarbons migrated vertically along the faults often have multiple oil beds overlapped around the faults. However, the oil reservoirs whose hydrocarbons migrated mainly along the connected sand bodies mainly formed in strata nearby the source rocks. Hydrocarbons through the unconformity belts can migrate in a long distance and formed stratigraphic reservoirs. All reservoirs in the south slope of Dongying Sag were formed by migration in two or more carrying beds. The multi match relation between fault systems, sand bodies and unconformities in time and space resulted in the complex distribution of reservoirs. The margin and the end of carrying bed systems are usually the significant target areas of oil and gas migration.