准噶尔盆地西北缘超剥带油气运聚特征与成藏模式  

Hydrocarbon Migration-Accumulation Characteristics and Pool-Forming Patterns in Overlap-Erosion Zones in Northwestern Margin of Junggar Basin

作　　者：沈扬[1] 林会喜[2] 赵乐强[2] 曾治平[2] 宫亚军[2] 郭瑞超[2] 闵飞琼[2] 

机构地区：[1]中国石油大学地球科学学院,北京102249 [2]中国石化胜利油田分公司西部新区研究院,山东东营257000

出　　处：《新疆石油地质》2015年第5期505-509,共5页Xinjiang Petroleum Geology

基　　金：国家科技重大专项(2011ZX05002-002);中石化科学技术研究开发项目(P12028)

摘　　要：准噶尔盆地西北缘超剥带地层超覆剥蚀频繁,远离油源,油气运聚过程复杂。结合地质研究、测试分析、盆地模拟认识,剖析了油气成藏要素及其时空匹配关系,揭示出准噶尔盆地西北缘超剥带具有"三源供烃、三期充注、断层-毯砂-淋滤层输导、毯砂边缘-壳下聚集"的成藏特征。超剥带主要有"断层-毯砂"、"断层-淋滤层"、"淋滤层-毯砂"等3种油气输导样式。准噶尔盆地西北缘超剥带总体具有"远源供烃,断层-毯砂-淋滤层输导、输导效能主控成藏与富集"的成藏模式。The overlap and erosion zones in northwestern margin of Junggar basin are characterized by frequent overlaps and erosions,faraway from the hydrocarbon sources,and complex oil-gas migration and accumulation. Combining with geologic study,test analysis and ba-sin modeling recognition,this paper analyzes the key factors of hydrocarbon accumulation and their matching relationships,and revealsthat the overlap and erosion zones in this area have such pool-forming characteristics as charging by three sources and stages,transportingby faults-blanket sands-leached layers,and oil-gas accumulating by blanket sands margin-beneath weathering crust; the petroleum trans-porting styles include fault-blanket sand,fault-leached layer,and leached layer-blanket sand; and such hydrocarbon accumulation patternsas remote sources for hydrocarbon charging,fault-blanket sand-leached layer for oil-gas transportation,and the effect of transporting effi-ciency on controlling hydrocarbon accumulation and enrichment.

关 键 词：准噶尔盆地 西北缘 超剥带 断层-毯砂-淋滤层输导 油气运聚 成藏模式 

分 类 号：TE112[石油与天然气工程—油气勘探]