摘要
从多元地质条件及其配置关系出发,分析吐哈盆地台北凹陷西缘油气成藏过程主控因素。研究结果表明:区域盖层与断裂共同控制着油气垂向运移的距离及层位;古构造背景、不整合面、输导断裂与储层砂体的配置关系控制着油气侧向运移的方向、通道和距离;基准面旋回、沉积微相类型与现今构造配置关系控制着油气的垂向聚集层位及平面分布规律。在此基础上,结合构造发育史、油源条件及沉积微相研究成果,总结出研究区4种主要成藏模式:源内为自生自储式和下生上储式;近源为短距离垂向—侧向运移—断层或局部构造成藏模式;远源为长距离侧向运移—不整合面上下成藏模式;油气再次分配运聚成藏模式。
In order to further clarify the role of different geological conditions in hydrocarbon accumulation process, the main controlling factors of hydrocarbon accumulation in western Taibei Sag, Turpan-Hami Basin were researched based on the angle of diverse geological conditions and their relationship in space-time. The results show that the distance and layer of hydrocarbon migrated upward are controlled by regional caprocks and faults. The direction, pathway and distance of the migrated oil-gas are controlled by palaeostructure and the relationship between unconformity, transport faults and reservoir. Vertical and lateral distributions of oil and gas are controlled by the factors of base level, sedimentary microfacies and recent tectonic. Based on the analysis of factors mentioned above coupled with structural history, oil sources conditions, sedimentary microfacies, four kinds of hydrocarbon accumulation models are summarized, i.e. inside source-lower source upper reservoir model and self-generating and self-preserving model, near source-short distance N vertical and lateral migration-faults or local structures screened model, far source-long distance lateral migration-up, and down of unconformity model and secondary migration and accumulation model.
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2013年第2期679-686,共8页
Journal of Central South University:Science and Technology
基金
国家重点基础研究发展计划("973"计划)项目(2007CB209503)
关键词
吐哈盆地
台北凹陷
成藏模式
主控因素
Turpan-Hami Basin
Taibei Sag
hydrocarbon accumulation model
key controlling factors
