东营凹陷胜坨地区岩性油气藏物理模拟

Physical simulation of lithologic reservoirs in the Shengtuo area of the Dongying Depression

牟雪梅 赵卫卫 查明

MOU Xue-Mei ZHAO Wei-Wei CHA Ming-

砂岩透镜体及构造-岩性油气藏是东营凹陷胜坨地区深层增储上产的重要岩性油气藏类型，通过物理模拟实验对其成藏特征进行研究表明:充足且有效的油气源条件、充注方式、砂岩透镜体自身物性变化及沟通源岩与砂体的断层与砂体的相对构造位置是决定岩性油气成藏的重要条件，其中是否有沟通有效烃源岩的通道是岩性油气藏成藏的关键，砂体物性变化及断层与砂体相对位置是影响油藏含油饱和度的主控因素。研究认为砂岩透镜体中心及构造-岩性油气藏断层上盘砂体为该区下一步的勘探目标。

Sand lens and structuralˉlithologic reservoirs are the main types of lithologic reservoirs for growth of reserves and production in the Shengtuo area of the Dongying Depression. We conduct a physical simulation on its accumulation characteristics，and the results show that significant conditions which determine the forming of lithologic reservoirs are sufficient and effective gas sources，charging patterns，changes of physical properties of sand lens，and the relative positions of faults connecting reservoirs with source rocks to sand bodies. Among these conditions，faults connecting effective source rocks and reservoirs are critical to the forming of lithologic oil/gas reservoirs，and the changes of physical properties of sand bodies and the relative positions of faults to sand bodies are the main controlling factors of oil saturation. According to this study，the next exploration targets in this area should be the center of sand lens and the sand bodies in the upper wall of structuralˉlithologic oil/gas reservoirs.

10.11743/ogg20100213