松辽盆地滨北地区水动力场特征及对油气运聚的影响

在系统收集研究区及周边现今地形起伏、白垩系露头分布、地层分布、地层压力测试数据以及地层水化学分析数据的基础上，采用同剥压实恢复方法研究了滨北地区离心流水动力特征.根据隐露头分布的时代和位置判断了不同时期大气淋滤水下渗的位置.采用盆地水动力模拟软件Basin 2再现了滨北地区水动力场的历史演化过程，研究了不同地质历史时期淋滤水进入地层的强度和范围.采用流体势理论分析了滨北地区油气运聚规律，认为丰体坳陷区水动力以压实水为主，油气由盆地中心向盆地边缘运移；盆地边缘地区受淋滤水影响，局部改变油气运移方向或使已形成的油气藏降解.

Characters of hydrodynamic field and impact on oil-gas migration and accumulation in Binbei area of the Songliao Basin

Based on detailed data of relief, Cretaceous outcrops, stratigraphic distribution, formation pressure tests and formation water chemical analysis,the backstripping law was applied to analyze centrifugal flow in Binbei area of the Songliao Basin.In addition,fluid potential theory was applied to study the stratigraphic water driving force.According to the time and position of implicit outcrop, position of atmospheric leaching infiltration was determined.By hydrodynamic simulation software Basin 2, the influence of atmospheric leaching in different geological age was reconstructed.The active area of stratigraphic water was changed during geological ages and mainly influenced north Binbei area.The depressing area of Binbei was mainly influenced by compacted water, and the reservoir between compacted water and atmospheric leaching could be degradated since the migration line was influenced.