辽河盆地大民屯凹陷流体势及油气运聚

The fluid potential and hydrocarbon movement and accumulation of Damintun depression in Liaohe Basin,China

通过对辽河盆地大民屯凹陷古地层压力恢复和地下古流体势空间分布模式模拟,确定盆地流体系统构成,进而提高对油气运移规律的认识,预测有利油气聚集区,提高钻探成功率。研究显示,大民屯凹陷地下古流体势分布与生油洼陷分布一致,高势区是大民屯凹陷油气成藏主要烃源区和动力源区,低势区与现今油气田吻合较好,可根据流体低势区预测新的油气聚集部位。

By recovering the paleo-formation pressure and imitating：distribution model of the paleofluid potential field, the content of the fluid system in a basin can be Understood, the knowledge of the law of hydrocarbon movement raised to predict the beneficial hydrocarbon accumulation area, and prosperous drilling events increased. It is shown by this study that the distribution of the underground paleo-fluid potential is consistent with the distribution of the oil-bearing depressions in Damintun basin; The high potential regions are the main resource and power areas, and the low potential regions are associated with the oil fields nowadays. According to this principle, the low potential region is the prospect area of oil accumulation.