利用浮力与毛细管力差值研究油气运聚规律——以沾化凹陷为例  

Applying Differential Value of Buoyancy Force and Capillary Pressure to Research Oil Migration-Accumulation Law: Taking Zhanhua Depression as Example

作　　者：王志英[1] 边凤青[1] 王鹏[1] 

机构地区：[1]中国海洋大学海洋地球科学学院,山东青岛266100

出　　处：《内蒙古石油化工》2008年第9期153-155,共3页Inner Mongolia Petrochemical Industry

摘　　要：不考虑幕式排烃的情况下,油气在储层中运移和聚集过程中所受到的阻力主要是毛细管力的作用。以钻井、测井资料为依据,通过对沾化凹陷成藏期馆陶组下段埋深、孔隙度及渗透率的恢复,求得成藏期馆下段的毛细管阻力,根据毛细管阻力分布特征研究油气在储层内的运移方向,并与浮力相结合,根据浮力与毛细管阻力的差值分布特征,揭示油气在储层中的运聚规律。Without considering episodic hydrocarbon expulsion, capillary pressure is the main resistance in course of hydrocarbon migration and accumulation in reservoir. According to the data of drilling and logging, by restoring burial depth, porosity and permeability of the lower Guantao Formation in Zhan-hua depression during pool--forming period, the capillary pressure is obtained. According to the distribu- tion of capillary pressure,oil migration direction in the lower Guantao Formation is revealed. And combined with buoyancy force, hydrocarbon migration-ccumulation law in reservoir is revealed based on the differential value distribution of buoyancy force and capillary pressure.

关 键 词：沾化凹陷 毛细管阻力 浮力 古孔隙度 古埋深 

分 类 号：P618.130.1[天文地球—矿床学] TE122.1[天文地球—地质学]