摘要
利用野外露头、岩心、测井及图像粒度分析等相关资料作为支撑条件,对苏里格气田的沉积古环境进行了恢复,总结各小层单元内的沉积体系类型、平面组合及其演化模式。研究结果表明,研究区主要在盒8段发育洪泛-辫状河沉积体系,在山1段主要发育洪泛-曲流河沉积体系。在盒8段可以识别出心滩、河床滞留和辫状河道间微相类型;在山1段可以识别出边滩、河道间、溢岸、河漫滩、河漫沼泽等微相类型。不同微相类型控制着不同成因砂体类型的展布,尤其是心滩和边滩,既是砂体最为富集的区域,又是储集性能最好的储层。因此,从"相控砂"理论模式出发,去揭示储层的平面展布规律,无疑具有重要的实际意义。为后续的成藏、有利富集区的筛选打下了良好的基础。
The use of outcrop,core,log and image inmember such as particle size analysis as support conditions,the deposition of the study area to restore the ancient environment,summarizing the small layer during the deposition system of the type of plane and its evolution model.The results show that the study area developed mainly in the case of He 8 braided river sedimentary system,in the Shan 1 starta,mainly developed flood plains-meandering river sedimentary system.He 8 member can identify char,channel lag deposit and braided interchannel microfacies types;Shan 1 member can identify point bar,interchannel,the overbank,floodplain,river diffuse swamp microfacies types.Control of different microfacies types cause different types of distribution of sand bodies,particularly the char and point bar,both is the most enriched sand area,and is the best reservoir.Therefore,from the ＂phase controlling＂ theoretical model starting to reveal the reservoir distribution law,which is undoubtedly of great practical significance.For the subsequent accumulation,favorable rich region has a good foundation for selection.
出处
《地质科技情报》
CAS
CSCD
北大核心
2011年第5期41-48,共8页
Geological Science and Technology Information
关键词
苏里格气田东区
沉积体系
富集区筛选
east of Sulige Gasfield
depositional system
rich region filtering
