新疆石油地质

新疆石油地质 ›› 2007, Vol. 28 ›› Issue (4): 425-427.

• 油气勘探 • 上一篇    下一篇

准噶尔盆地乌夏断裂带三叠系沉积相研究

牛海青1, 陈世悦1, 鄢继华1, 江祖强2   

  1. 1.中国石油大学 地球资源与信息学院, 山东 东营 257061;
    2.中国石油 新疆油田分公司 勘探开发研究院, 新疆 克拉玛依 834000
  • 收稿日期:2007-01-22 出版日期:2007-08-01 发布日期:2020-07-31
  • 作者简介:牛海青(1982-), 女, 山东聊城人, 在读硕士研究生, 沉积学,(Tel) 13884922798(E-mail) upc_nhq@163.com.

Sedimentary Facies of Triassic in Wu-Xia Fault Belt, Junggar Basin

NIU Hai-qing1, CHEN Shi-yue1, YAN Ji-hua1, JIANG Zu-qiang2   

  1. 1. Faculty of Geo-Resources and Information, China University of Petroleum, Dongying, Shandong 257061, China;
    2. Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China
  • Received:2007-01-22 Online:2007-08-01 Published:2020-07-31

PDF

234

摘要： 通过岩心、测井、录井、地震等综合资料,系统研究了准噶尔盆地乌夏断裂带三叠系的沉积相特征及沉积体系。研究表明,研究区三叠系发育冲积扇、扇三角洲、湖底扇和湖泊相等4种沉积相类型,从百口泉组到白碱滩组经历了气候由干旱至潮湿的湖侵过程。百口泉组以冲积环境为特征,发育夏子街冲积扇群和百口泉冲积扇群;克拉玛依组上、下亚组以扇三角洲和滨浅湖相沉积为主;白碱滩组为最大湖侵期,以湖泊相沉积为主,发育小规模扇三角洲及湖底扇沉积。其中,克拉玛依组的扇三角洲前缘储集物性最好,是最有利的沉积相带;百口泉组的冲积扇扇中与断层和不整合面相配合也是较好的储油相带。

关键词: 准噶尔盆地, 乌尔禾-夏子街断裂带, 三叠系, 沉积相, 砂体

Abstract: Through core analysis, well logging, borehole log and seismic data, the sedimentary facies feature and depositional system of Triassic in Wu-Xia fault belt of Junggar basin is systematically studied. The result shows that four types of sedimentary facies occur in this area, they are alluvial fan, fan delta, sublacustrine fan and lake facies. The Baikouquan formation to Baijiantan formation here experienced arid-wet changing climate in lake transgressive process. Baikouquan formation is characterized by alluvial fan groups of Xiazijie and Baikouquan areas; Upper and Lower Karamay formation by fan delta and shore-lake sediment; Baijiantan formation as a largest laketransgressional episode dominated by lacustrine fan sediment with small scale fan delta and sublacustrine fan sediments. It is concluded that the fan delta front of Karamay formation is the most favorable sedimentary facies with best reservoir property; the midfan of Baikouquan alluvial fan fitted with the faults and unconformities could also be good prospecting areas for hydrocarbon accumulation.

Key words: Junggar basin, Wuerhe-Xiazijie fault belt, Triassic, sedimentary facies, sand body

中图分类号: