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在详细分析临南洼陷油气运移的动力系统、输导条件、运移方向以及运移时期的基础上,对临南洼陷内油气运移特征进行了系统研究。研究结果表明:(1)临南洼陷油气运移系统具有明显的分层特征,在3000m以上地层为正常压力系统,3000m以下地层为混合压力系统,浮力和异常压力构成了临南洼陷内油气运移的主要动力;(2)近东西走向的断层和相互连通的砂体共同组成了油气由洼陷中心向边缘运移的通道;(3)油气由洼陷中心向边缘运移共有4个优势运移方向;(4)油气运移时期出现在渐新世东营期。
Based on the detailed analysis of the dynamic systems, transport conditions, migration direction and migration period of the hydrocarbon migration in the Linnan sub-sag, the hydrocarbon migration characteristics in the Linnan subsag are systematically studied. The results show that: (1) The oil and gas migration system in Linnan sub-salamander has obvious stratification characteristics. The strata above 3000m are normal pressure systems and the strata below 3000m are mixed pressure systems. Buoyancy and abnormal pressure constitute the inner- (2) the nearly east-west faults and interconnected sand bodies make up the channel for hydrocarbon migration from the center of the depression to the edge; (3) the migration of oil and gas from the center of the depression to the edge has a total of 4 A dominant migration direction; (4) the migration period of oil and gas occurred in the Dongnian period of Oligocene.