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运用多孔介质渗流理论和构造应力场驱动油气运移的流固耦合分析方法对柴达木盆地西部的构造应力场及流体运移势进行了数值模拟,揭示盆地西部油气运聚的规律是:①区域主要构造格架或构造体系控制了构造压力低值区的展布,二级构造压力低值区的边界为近南北和北北东向;②由浅层向深层,构造压力低值区的范围有逐渐扩大的趋势;③盆地西南部油区棋盘格式构造的结点为构造压力低值区;④不同构造层油气流矢量聚集区往往都是构造压力的低值区和油气聚集的有利部位。
The numerical simulation of tectonic stress field and fluid migration potential in the western Qaidam Basin is based on the theory of porous media seepage and the fluid-structure coupled analysis method of tectonic stress field driving hydrocarbon migration. It is revealed that the law of hydrocarbon migration and accumulation in the western basin is: The major tectonic frameworks or tectonic systems in the region control the distribution of low pressure zones in the structural tectonics. The boundaries of the low pressure zones in the secondary tectonic setting are near North-South and North-North-East; and from shallow to deep, the low pressure zones (3) the nodes of oil and gas flow patterns in different tectonic layers tend to be low value areas of tectonic stress and favorable sites for hydrocarbon accumulation .