准噶尔盆地中央坳陷侏罗系三工河组沉积相与层序地层研究  

Division of Sedimentary Facies and Sequence Stratigraphy of Jurassic Sangonghe Formation in the Center of Junggar Basin

作　　者：孟翠萍[1] 朱美衡[1] 杨晓梅[2] 易小芹[1] 周晓[1] 

机构地区：[1]中石化江汉油田分公司物探研究院,湖北武汉430035 [2]中石化江汉油田分公司勘探开发研究院,湖北潜江433124

出　　处：《石油天然气学报》2011年第2期27-31,164,共5页Journal of Oil and Gas Technology

基　　金：国家油气重大专项(2008ZX05002-005-007HZ)

摘　　要：目前,对三工河组层序地层的划分以及三工河组二段砂体的成因类型存在一定的争议。从沉积相研究入手,通过野外露头剖面的观察,结合岩心、测井以及相序组合特征的分析,认为三工河组主要为滨浅湖沉积,而三工河组二段砂体为陆上辫状河沉积。在此基础上,通过不同层序界面的识别结果以及层序划分的基本原则,把侏罗系三工河组重新划分为5个三级层序。其中,三工河组二段砂体主要分布在SQ2~SQ4层序的低位体系域中,属低位体系域晚期的陆上河道侵蚀充填体系。There existed an argument on sandstone genetic types and division of sequence stratigraphy of Jurassic Sangonghe Formation in the center of Junggar Basin.Deposition of Jurassic Sangonghe Formation was formed by shore-shallow lacustrine from the sedimentary facies.By analyzing outcrop sections,cores,logging data and fabric features of facies succession,it was considered that the 2nd member of Sangonghe Formation was formed by braided stream deposition.Based on the study,sequence stratigraphic principles and identifying result of different sequence boundaries are studied,Jurassic Sangonghe Formation is divided into five third-order sequences and sandbodies of the 2nd member of Jurassic Sangonghe Formation are distributed in low system from SQ2~SQ4,which belongs to channel eroding and filling systems during later stage of LST.

关 键 词：准噶尔盆地 侏罗系 沉积相 层序地层 

分 类 号：P618.13[天文地球—矿床学]