四川盆地海相碳酸盐岩的油气成藏条件  

Hydrocarbon Accumulation Conditions of Marine Carbonate Rocks in the Sichuan Basin of China

作　　者：陈英富[1,2] 秦娟[3] 王艳红[3] 李凤春 

机构地区：[1]中国产业安全研究中心博士后科研工作站,北京100044 [2]中国冶金地质总局矿产资源研究院,北京101300 [3]中国地质大学(北京),北京100083 [4]中国治金地质总局山东测试中心,山东济南250014

出　　处：《地质与勘探》2016年第2期357-362,共6页Geology and Exploration

摘　　要：四川盆地位于亚洲大陆中南部,是我国最大的外流盆地。油气资源评价结果(2008)表明,四川盆地海相地层待发现资源量约为50111.84×108m^3,资源勘探潜力巨大。本文从地层的划分、层序格架及层序岩相古地理特征等方面,对四川盆地海相碳酸盐岩油气成藏条件做了进一步研究。认为研究区烃源岩包括下志留统、中二叠统、上二叠统龙潭组和上三叠统须家河组等4套岩石,及局部发育的上二叠统大隆组。储集层粉为构造成因类和沉积成因类,构造成因主要包括裂缝性储层;沉积成因类储层主要是礁滩储层、内幕白云岩储层和风化壳岩溶储层。中二叠统气藏主要为自生自储的裂缝性气藏和台内滩相气藏;茅口组顶部和雷口坡组顶部发育风化壳型气藏;吴家坪组、长兴组及飞仙关组地层含礁滩型气藏;嘉陵江组和雷口坡组地层含内幕白云岩型气藏。The Sicbuan basin is one of the most important oil and gas basins of marine carbonate sequences in China, also the earliest carbonate exploration, exploitation and utilization were conduced. The evaluation of its hydrocarbon resources （2008） suggested there is a considerable amount of undiscovered resources （ approximately 50111.84 ×108m^3） in the marine strata of this basin, implying a great potential of prospecting. This paper presents a further study on hydrocarbon accumulation conditions in this area based on strata classification, sequence patterns and characteristics of rock facies and paleogeography. The results suggest that the source rocks include four sets of Lower Silurian, Middle Permian, Upper Permian, and Upper Triassic systems. Reservoirs are of structural and sedimentary genesis, of which the former refers to fissures and the latter is is reef-beaches, dolmnitite, and weathe- ring crusts. These reservoirs are present in varied formations.

关 键 词：四川盆地 碳酸盐岩 油气成藏 

分 类 号：TE122[石油与天然气工程—油气勘探]