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An analysis on pooling history of the Carboniferous thermal methane gas pool, eastern Sichuan basin
Author(s): 
Pages: 274-279
Year: Issue:  2
Journal: OIL & GAS GEOLOGY

Keyword:  充注期次气态烃包裹体固体包裹体原油裂解型气藏石炭系四川盆地东部;
Abstract: 应用碳酸盐岩储层次生方解石脉中的烃类流体包裹体研究方法,对四川盆地东部石炭系气藏的形成及充注史进行了恢复研究.流体包裹体鉴定表明,现今气藏储层中除气态烃+液态烃+盐水包裹体外,还存在大量多相态(气相、固相及三相)包体,流体包裹体捕获的温度从100~135℃至140~180℃至185~220℃逐渐增高,同时由低温包裹体低含量的甲烷逐渐演变成高温包裹体高含量的甲烷,现今气藏的形成演变是古油藏经历了油气的生成、聚集、破坏乃至受热裂解为气藏的过程.
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