塔里木盆地北部油气运移二维二相数值模拟分析  

2-D MODELING OF HYDROCARBONS MIGRATION FOR TWO PHASES FLUID FLOW APPLIED NORTHERN TARIM BASIN

作　　者：范土芝 姜鹏[1] 陶一川[1] 钱晓军[1] 刘鹏生[1] 张忠先[1] 陈正辅 

机构地区：[1]武汉石油地质系,西北石油地质局,地矿部无锡中心实验室

出　　处：《地球科学（中国地质大学学报）》1995年第3期322-327,共6页Earth Science-Journal of China University of Geosciences

基　　金："八五"国家科技攻关项目

摘　　要：油气运移和聚集过程实际上是油（气）水饱和度在疏导层的变化过程。盆地中油（气）二相流动问题的研究就是对这一过程的定量描述。本项研究是在前人工作基础上，考虑压实作用造成骨架变形来推导新的二维二相流动方程，它容描述异常压力演化与二相流动于一式，在模拟方法上采用有限分析的数值方法。它应用于新疆塔里木盆地北部地区，展示了该区异常压力、含水饱和度弥散状扩散效应以及流速场在地质历史时期动态模拟演化特征；指出了该区油气运移方向、通道和能量条件；得出了海西晚期—早侏罗世以及喜山期是本区最重要的两个油气运移聚集时期。The modeling of two phases fluid flow in sedimentary basin is a quantitative description of hydrocarbons migration process,which represents hydrocarbon/water saturation change process in the aquifer. The new 2-d two phases fluid flow equation,which combined with abnormal pressures evolution and considered rock's matrix deformation under sediment compaction,has been infered,and the numeric meth od of the finite analysis is used in this study.The modeling resuls applied to Northern Tarim basin show that the dynamic characteristics fo abnormal pressures,dispersional effect of water saturation change and fluid velocity fields in the geological processes in Tarim basin and point out the directions, the pathways and energy conditions for hydrocarbons migration. Later Hercynian period-Early Jurassic epoch and Himalayn period are two of the most important periods of hydrocarbons migration and accumulation in this area.

关 键 词：油气运移 两相流 数值模拟 塔里木盆地 

分 类 号：P618.130.1[天文地球—矿床学]