盆地构造热演化史在油气成藏期次研究中的应用  

Application of tectonic-thermal evolution history to hydrocarbon accumulation timing in sedimentary basins

作　　者：任战利[1,2] 刘丽[2] 崔军平[2] 肖晖[2] 高胜利[2] 

机构地区：[1]西北大学"大陆动力学"国家重点实验室,陕西西安710069 [2]西北大学,陕西西安710069

出　　处：《石油与天然气地质》2008年第4期502-506,共5页Oil & Gas Geology

基　　金：国家重点基础研究发展规划(973)项目(2003CB214605);高等学校全国优秀博士学位论文作者专项资金(200347);中国煤成气成藏机制及经济开采基础研究(2002CB211704);高等学校博士学科点专项科研基金"松辽盆地基底石炭-二叠系构造热事件研究"

摘　　要：盆地构造热演化史控制着油气的生成、运移、聚集与成藏。我国沉积盆地多为叠合盆地,热历史类型复杂多样,不同热动力学背景、不同构造热演化历史类型的盆地烃源岩热演化程度、生油门限深度、油气主生烃期、成藏期次及历史明显不同。盆地多期成藏是我国叠合盆地的一大特点,油气成藏的多期次性受控于烃源岩的多期次生烃,最终受控于叠合盆地复杂的构造热演化史。现今的油气成藏期次研究方法很多,但不同方法原理不同,各有优点和局限性,构造热演化史的详细刻画是解决不同油气成藏研究方法存在矛盾的有效途径之一。The hydrocarbon generation, migration, accumulation, and reservoiring, are controlled by basin tectonic-thermal history. The sedimentary basins in China are mostly superimposed basins with complicated thermal history. Basins with different tectonic-thermal evolution history and different thermodynamic settings vary dramatically in source rock maturity, depth of oil-generation threshold, key hydrocarbon generation time, and period and times of hydrocarbon accumulation. Muhiphase hydrocarbon accumulation is one of the characteristics of the superimposed basins in China. It was controlled by the muhiphase hydrocarbon generation of the source rocks and ultimately by the tectonic-thermal evolution history of the basin. The methods for the timing of hydrocarbon accumulation are plenty but all have upsides and downsides with their different approaches and principles. A detailed description of tectonic-thermal history is regarded as an effective way to deal with the contradictory caused by these methods.

关 键 词：成藏期次 油气成藏 构造-热事件 热历史类型 构造热演化史 叠合盆地 

分 类 号：TE111.1[石油与天然气工程—油气勘探]