A MODELLING EXPERIMENT AND MECHANISM ANALYSIS OF OIL ACCUMULATION IN POD-LIKE SANDBODY
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摘要: 本文通过物理模拟实验研究了含水的凸镜状砂体聚油过程,认识了静水条件下毛细管力和排烃压力的综合作用.造成砂体油水交替聚油成藏.其中“源岩”内凸镜状砂体聚油作用最快,而有缝隙沟通“源岩”外泥岩中凸镜状砂体聚油作用则较慢,其中,“源岩”在上者又比“源岩”在下者慢.Abstract: In this paper,the oil-accumulation process of pod-like water sandbody is studied by physical moelling experiments.It is considered that the comprehensive action of capillary pressure and hydrocarbon-expul sive pressure under a hydrostatic condition results in oil-water-alternating oil accumulation in sandbody.Among all experiments,the pod-like sandbody surround by nsource rocks" has the fastest oil-accumulationcourse,and that outside"source rocksn and linked up by fractures has slower one.Also,the oil accumula tion in pod-like sandbody under nsource rocks" is slower than that upper nsource rocksn.
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[1] 罗蛰谭.油层物理.北京:地质出版社,1985,148-153 [2] АгАье всславкнн.О Механнзме Не Фте-газонсъшения лесчаных лнн Втлнинах.гзологня НеФгни газа,1995.(2)
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