西南石油大学学报(自然科学版) ›› 2011, Vol. 33 ›› Issue (4): 53-58.DOI: 10.3863/j.issn.1674 – 5086.2011.04.009

• 地质勘探 • 上一篇    下一篇

巴楚隆起寒武系层序格架及生储盖组合特征

杨永剑1, 2, 刘家铎3, 田景春3, 孟万斌3, 祝 贺3   

  1. 1. 中石化西南分公司博士后科研工作站, 四川 成都 610081;2. 中石化西南分公司勘探开发研究院, 四川 成都 610081;3.“油气藏地质及开发工程” 国家重点实验室 · 成都理工大学, 四川 成都 610059
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-08-20 发布日期:2011-08-20

The Cambrian Sequence Stratigraphy Framework andSource-Reservoir—Caprock Association of Bachu Uplift in Tarim Basin

YANG Yong-jian1, 2, LIU Jia-duo3, TIAN Jing-chun3, MENG Wan-bin3, ZHU He3   

  1. 1. Post-doctoral Research Station, Southwest Petroleum Branch, SINOPEC, Chengdu, Sichuan 610081, China; 2. Research Instituteof Exploration and Production, Southwest Petroleum Branch, SINOPEC, Chengdu, Sichuan 610081, China; 3. State Key Laboratoryof Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, Sichuan 610059, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-08-20 Published:2011-08-20

摘要: 通过对野外露头剖面、 钻 (测) 井、 地震解释等相关资料的综合分析, 以层序地层学理论为指导, 将塔
里木盆地巴楚隆起寒武系划分为 3 个二级层序, 14 个三级层序, 其中二级层序均为 I 型层序, 主要发育海侵
体系域和高位体系域, 在寒武纪, 研究区主要表现为局限台地—蒸发台地的交替沉积, 其水体深度西北缘相
对较大, 东南部相对较浅。在此基础上根据其体系域发育特征探讨了研究区生储盖发育特征及时空配置规
律, 共发育 1 套烃源岩、 3 套储集层、 2 套盖层, 烃源岩为 SS1 海侵体系域, 储层分别为 SS1 高位体系域、 SS2
海侵体系域、 SS3 高位体系域和海侵体系域, 盖层分别为 SS1 高位体系域和 SS2 高位体系域, 组成了两套较
好的生储盖组合。研究区内野外剖面和钻井岩芯资料显示: 白云岩多数经历过热液改造, 在热液改造强烈
的地方溶蚀孔洞较为发育, 因此, 在构造活动强烈的地区, 热液通过断裂运移对原岩进行溶蚀和改造, 易于
形成较好的储层, 进而形成较好的油气藏。

关键词: 塔里木盆地, 巴楚隆起, 寒武系, 层序地层, 生储盖组合

Abstract: Based on comprehensive analysis of the outcrops, wells data, seismic explanation data, and guided with
sequence stratigraphy theory, the sequence stratigraphy of Bachu Uplift Cambrian is divided into fourteen 3rd-
order sequences and three 2nd-order sequences which belong to type I sequence and were constituted by TST and
HST. In the Cambrian period, the sedimentary environment is mainly showed as alternating deposition of restricted
platform-evaporation platform, the water depth is mainly showed as the northwestern margin is relatively deep and
the southeast is shallow. On the basis of above, this paper discusses the characteristics of source-reservoir-cap rock
and its rule of combination on the basis of sequences stratigraphic framework, the results show that there are 1 set
of source rock, 3 sets of reservoir and 2 sets of cap developed in the Cambrian in the study area. The source rock
is SS1 HST, reservoirs are SS1 HST, SS2 TST, SS3 TST and HST, caps are SS1 HST, SS2 HST. They combined
into 2 sets of good source-reservoir-caprock assemblages. In addition, most dolomites in the outcrops or in the drill
core have been changed by hydrothermal, and the greater intensity of hydrothermal alteration, the more developed
dissolution pores. Therefore, in some of the places where intense tectonic activities happened, hydrothermal then
began to change the rock by migration. At last, it formed good reservoirs.

Key words: Tarim Basin, Bachu Uplift, Cambrian, sequences Stratigraphic, source-reservoir-cap rock assemblage11

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