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为了实现对天然气资源量的定量模拟,提出“聚气系统”的概念,并利用盆地模拟技术建立了聚气系统天然气资源量动态模拟模型.聚气系统是包含一个聚气区和若干与其相关供气区的天然气生、运、聚、散的自然系统.所建立的天然气资源量模拟模型包括了地史、热史、生排烃史和天然气运聚史,考虑了天然气运聚过程中的溶解作用、扩散作用和断层散失作用.利用此模型算得西部某盆地某聚气系统各聚气单元天然气资源量演化史
In order to quantitatively simulate natural gas resources, the concept of “gas gathering system” is put forward and the dynamic simulation model of natural gas resources in gas gathering system is established by using basin simulation technology. Polymeric gas system is a natural system containing natural gas, gas, poly, and scattered natural gas with a gas gathering area and a number of related gas supply areas. The established natural gas resource simulation model includes the geo-history, thermal history, hydrocarbon generation and expulsion history and natural gas migration and accumulation history, taking into account the dissolution, diffusion and fault dissipation during natural gas migration and accumulation. Using this model, the evolution of natural gas resources of each gas gathering unit in a certain gas accumulation system in a certain western basin was calculated