新疆石油地质

新疆石油地质 ›› 2006, Vol. 27 ›› Issue (5): 539-541.

• 油气勘探 • 上一篇    下一篇

准噶尔盆地腹部三工河组二段层序界面厘定

张福顺1,2   

  1. 1.中国石油大学博士后流动站, 北京 102249;
    2.中国石化勘探开发研究院西部分院, 乌鲁木齐 830011
  • 收稿日期:2005-12-01 修回日期:2006-04-17 出版日期:2006-10-01 发布日期:2020-10-20
  • 作者简介:张福顺(1968-), 男, 黑龙江肇东人, 高级工程师, 博士, 石油地质,(Tel) 0991-3673059(E-mail) zhangfs@pepris.com.
  • 基金资助:
    中国石化总公司“十五”科技攻关项目, 准噶尔盆地腹部及西缘地区圈闭识别与成藏模式研究(P03011)资助

Classification of Sequence Boundary of Member 2 of Sangonghe Formation in Hinter land of Junggar Basin

ZHANG Fu-shun1,2   

  1. 1. Postdoctoral Programme, China University of Petroleum, Beijing 102249, China;
    2. West Institute, Research Institute of Petroleum Exploration and Development, Sinopec, Urumqi, Xinjiang 830011, China
  • Received:2005-12-01 Revised:2006-04-17 Online:2006-10-01 Published:2020-10-20

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摘要： 准噶尔盆地腹部岩性油气藏油水关系复杂,解决这一问题的关键是层序划分对比。通过岩心、录井、测井、地震的综合研究发现,在下侏罗统三工河组二段内部可以识别出一个三级层序界面。该界面在岩性上以冲刷面及其之上砾岩或者含砾粗砂岩的出现为标志,在测井曲线上表现为突变接触,该界面在伽马反演剖面上能够识别并且能够追踪对比。界面之下的高水位体系域砂体连通性好、侧向封堵不好、不含油,层序界面之上的低水位体系域及水进体系域三角洲分流河道砂体储集层非均质性强、侧向封堵条件好、含油。厘定追踪该界面并寻找该界面之上的低水位体系域和水进体系域的三角洲分流河道砂体是勘探的关键。

关键词: 准噶尔盆地, 侏罗系, 层序, 界面

Abstract: In view of the complex water-oil relations of lithology reservoir in hinterland of Junggar basin, the sequence stratigraphic classification and correlation are conducted by comprehensive researches of core, logging, well logging and seismic profile. The result shows that a sequence boundary is identified inside member 2 of Sangonghe formation of Lower Jurassic, which is characterized by lithology of scour surface and conglomerate and gravel bearing gritstone over it, and by well logs of abrupt contact. The boundary can be identified and traced for correlation on the gamma inverse profile. In HST beneath the boundary have good interconnecting sand body, poor lateral sealing, and no oil shows; in LST and TST above it have delta distributary channel sand reservoir with serious heterogeneity and good lateral sealing, being oil layer. Hence, tracing this boundary and searching for the delta distributary channel sands in LST and TST will be the key for petroleum exploration in this area.

Key words: Junggar basin, Jurassic, sequence, boundary

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