The Sedimentary Faceis Research of Fengcheng Formation of Permian in Fengcheng Area, the Northwestern Margin of Junggar Basin
详细信息
- 责任者：Liu Min (Xingjing Projects Department ; Geological Logging Company ; Shengli Oilfield Company ; SINOPEC ; Urmuqi 830011 ; China) ; Zhang Shuncun
- 刊名：Xinjiang Geology
- 出版年：2013
- 卷期：31(3)
- 关键词：沉积相 ; sedimentary facies ; 储层预测 ; reservoir prediction ; 准噶尔盆地 ; Junggar Basin
- 页码：p.236-242
- 图表：5 illus., 22 refs.
- 分类号：1003
- issnNo：ISSN1000-8845
- isbnNo：CN65-1092/P
摘要
Recent years exploration shows that Fengcheng formation of Permian in the northwestern margin of Junggar basin has great potential for exploration.The main reservoir in this area is dolomitic reservoir.In order to find out the sedimentary environment and sedimentary microfacies distribution characteristics,providing reference for oil and gas exploration,In this paper,by means of the core observation,identification of thin sections,the comprehensive analysis of data of well logging and logging,we studied the sedimentary facies.The results show that the research area mainly develops dolomitic rock,only a small amount of sandstone and mudstone are developed.Based on the sedimentary facies research,combining the tectonic background、climate characteristics and sedimentary environment of research region,two major provenances are proposed : the west of western well F26 provenance and north of northern well FC011 provenance.In Fengcheng formation sedimentary periods,the study area mainly develops semi-deep lake facies,the fan delta front subdistributary channel sediments and sheet sand constitute the main depositional systems near the source area,Feng Ⅰto FengⅡ section,the area of water increases and the range of clastic deposits decreases,the FengⅢ is similar to FengⅡ,without big change,according to the depositional systems,it shows that dolomitic rocks in the Fengcheng area are formed in semi-block salt bay sedimentary environment,reservoir physical properties are clearly controlled by sedimentary environment,which is the basic for us to build up the alluvial fan-fan detla-lacustrine Facies sedimentary system.