北部湾盆地福山凹陷层序地层格架下油气藏分布规律与控制因素  

Distribution regularities and control factors for reservoir formation within sequence stratigraphic framework in Fushan Sag,Beibuwan Basin

作　　者：李媛[1,2] 王华[2] 刘恩涛[1,2] 廖远涛[2] 林正良[3] 马庆林[2,4] 

机构地区：[1]中国地质大学(武汉)构造与油气资源教育部重点实验室,湖北武汉430074 [2]中国地质大学(武汉)资源学院,湖北武汉430074 [3]中国石化石油物探技术研究院,江苏南京210014 [4]中国石油南方石油勘探开发公司,广东广州510240

出　　处：《中南大学学报（自然科学版）》2014年第5期1542-1554,共13页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(41102069);国家科技"十二五"重大专项(2011ZX05009-002);构造与油气资源教育部重点实验室资助项目(TPR-2011-24)

摘　　要：在等时层序地层格架下,通过对福山凹陷内250口已知钻井油气藏统计,总结油气分布规律,进而研究其时空差异性的主要控制因素。研究结果表明:纵向上,福山凹陷油气主要分布于SQEls3HST,SQEls2LST和SQEls1HST中;空间上,高位域时期油气藏主要分布于中部构造转换带地区,低位域时期油气主要分布于东部地区。层序(体系域)发育与油气分布具有很好的关联性,影响油气藏空间上差异分布的主控因素包括沉积相带、构造转换带及层序发育模式等。因此,提出"高位域—构造转换带—三角洲前缘"和"低位域—挠曲坡折带—湖底扇"2种三元耦合寻找有利区带的设想。The hydrocarbon distribution was summarized and the main control factors of spatio-temporal differences were discussed through statistics of 250 boreholes in the isochronous sequence stratigraphic framework in Fushan Sag. The results show that hydrocarbon resources of Fushan Sag mainly distribute in SQEls3HST, SQEls2LST and SQElslHST on vertical, which also have notable regional spatial difference in space, enrichment in the central transfer zone during the high system tract period while in the eastern area in the low system tract. There is some relation between hydrocarbon distribution and sequence （or system tracts） development styles. The main control factors of spatial differentiations include sedimentary facies, the development of transfer zone and different sequence models. According to these conclusions, two thoughts of three elements coupled controlling favorable exploration traps have been put forward, which will have significance to guide hydrocarbon exploration in Fushan Sag and enrich theories of other similar continental basins hydrocarbon exploration.

关 键 词：北部湾盆地 福山凹陷 层序地层格架 油气分布 控制因素 

分 类 号：P624.6[天文地球—地质矿产勘探]