基于化学动力学和包裹体分析技术研究川东石炭系成藏史

川东石炭系油气藏的源岩生烃史及运聚史研究的不够充分,缺少定量化的动态指标依据,影响了川东石炭系新的接替区域的勘探。利用化学动力学方法对其主力烃源岩下志留系泥岩进行生烃史模拟,同时结合包裹体分析技术进行流体注入史研究,分析二者的匹配关系,模拟石炭系油气藏的动态调整过程。研究认为石炭系油气藏为三期成藏,第一期晚二叠世~晚三叠世,下志留统烃源岩早成熟阶段,开始初步生气,形成早期的小规模天然气藏;第二期晚三叠~早侏罗世时期,为烃源岩大量生油阶段,形成古油藏;第三期燕山时期,古油藏遭遇高温裂解生气阶段,并经历后期的调整改造,最终形成现今的气藏分布。显示化学动力学和包裹体分析技术可有效提高油气藏成藏史的模拟精度。

Chemical kinetics and inclusion of Carboniferous in East Sichuan Based on the analysis of reservoir forming history

the Department of hydrocarbon generation history of the source rocks of oil and gas reservoirs of Carboniferous in East Sichuan and accumulation history research is insufficient, lack of dynamic index based on quantitative, influence of Carboniferous in East Sichuan region to replace the new exploration. This paper utilizing the chemical kinetic method for simulation of hydrocarbon generation history of the main hydrocarbon source rocks in Lower Silurian mudstone, and combining with the inclusion analysis technique of fluid into the history of research, analysis of the relationship between the two match, dynamic adjustment process simulation of Carboniferous reservoir, studies suggest that the Carboniferous reservoirs into three periods of hydrocarbon accumulation, the first during the period of Late Permian Triassic to late three, the Lower Silurian source rocks of early mature stage, began to get angry, the formation of small scale natural gas reservoirs in early second late three ~; Triassic early Jurassic period, hydrocarbon source rock for oil reservoir formation stage, the third stage; during the period of Yanshan paleo oil reservoir, encounter high temperature cracking stage, and later through adjustment and transformation, and ultimately the formation of the gas reservoir distribution. This paper shows that the analysis of chemical kinetics and inclusion technology can improve the.