古地理学报 ›› 2020, Vol. 22 ›› Issue (3): 523-538. doi: 10.7605/gdlxb.2020.03.036

• 岩相古地理学及沉积学 • 上一篇    下一篇

鄂尔多斯盆地大牛地气田奥陶系马家沟组中下组合沉积模式*

雷涛1, 邓虎成2,3, 吴冬2,3, 伏美燕2,3, 唐明远1, 崔璐1, 丁晓琪2,3, 夏宇2,3, 解馨慧2,3   

  1. 1 中国石化华北油气分公司勘探开发研究院,河南郑州 450000;
    2 成都理工大学油气藏地质及开发工程国家重点实验室,四川成都 610059;
    3 成都理工大学能源学院,四川成都 610059
  • 收稿日期:2020-03-06 修回日期:2020-04-06 出版日期:2020-06-01 发布日期:2020-06-06
  • 通讯作者: 邓虎成,男,1980年生,教授,2009年毕业于成都理工大学,获博士学位,主要从事开发地质相关的教学与科研工作。E-mail: denghucheng@cdut.cn。吴冬,男,1987年生,副研究员,2016年毕业于中国石油大学(北京),获博士学位,主要从事沉积储层相关的教学与科研工作。E-mail: lisandpw@163.com。
  • 作者简介:雷涛,男,1983年生,助理研究员,2011年毕业于成都理工大学,获硕士学位,主要从事开发地质相关的管理与科研工作。E-mail: netnet-168@163.com。
  • 基金资助:
    *国家自然科学基金项目(编号: 41402096)资助

Depositional model of the lower-middle Ordovician Majiagou Formation in Daniudi Gas Field,Ordos Basin

Lei Tao1, Deng Hu-Cheng2,3, Wu Dong2,3, Fu Mei-Yan2,3, Tang Ming-Yuan1, Cui Lu1, Ding Xiao-Qi2,3, Xia Yu2,3, Xie Xin-Hui2,3   

  1. 1 Exploration & Development Research Institute of North China Oil and Gas Company,SINOPEC,Zhengzhou 450000,China;
    2 State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of Technology,Chengdu 610059,China;
    3 College of Energy,Chengdu University of Technology,Chengdu 610059,China
  • Received:2020-03-06 Revised:2020-04-06 Online:2020-06-01 Published:2020-06-06
  • Contact: Deng Hu-Cheng,born in 1980,got his doctoral degree in 2009 from Chengdu University of Technology. Now,he is a professor and is mainly engaged in reservoir geology and exploitation. E-mail: denghucheng@cdut.cn. Wu Dong,born in 1987,got his doctoral degree in 2016 from China University of Petroleum(Beijing). Now,he is an associate researcher and is mainly engaged in depositional reservoir. E-mail: lisandpw@163.com.
  • About author:About the first author Lei Tao,born in 1983,got his master degree in 2011 from Chengdu University of Technology. Now,he is an assistant researcher and is mainly engaged in reservoir geology and exploitation. E-mail: netnet-168@163.com.
  • Supported by:
    Financially supported by the National Natural Science Foundation of China(No.41402096)

摘要: 碳酸盐岩是鄂尔多斯盆地古生代重要的油气储集层。综合利用岩心、薄片和测井资料,在鄂尔多斯盆地大牛地气田奥陶系马家沟组中下组合识别出蒸发台地、开阔台地和局限台地沉积亚相类型,详细分析了不同沉积亚相特征,建立受海平面升降控制的大牛地气田马家沟组中下组合沉积模式。马一段至马三段沉积时期海平面较低,沉积了蒸发台地相,其中马一段和马三段的盐湖微相主要分布于东南部,膏湖微相分布于盐湖外围,而马二段海平面略有上升,随之沉积了覆盖全区的泥云坪微相和膏云坪微相;马四段形成于最大海泛期,沉积开阔台地相,自下而上依次形成覆盖全区、稳定分布的灰坪微相和云灰坪微相;马五段形成于海退—海侵—海退过程,主体沉积局限台地相,马五7-10亚段的云坪微相覆盖全区,马五6亚段自西北往东南发育大面积的泥云坪微相,马五5亚段中部以灰坪微相为主,云坪微相围绕灰坪分散分布。

关键词: 鄂尔多斯盆地, 大牛地气田, 马家沟组, 碳酸盐岩, 沉积模式

Abstract: Carbonate rocks are the important Paleozoic oil and gas reservoirs in the Ordos Basin. Based on the comprehensive analyses of core and thin section and logging data,the depositional subfacies,including evaporation platform,open platform and confined platform,were identified in the lower-middle Ordovician Majiagou Formation of the Daniudi Gas Field in the Ordos Basin. The characteristics of different depositional subfacies were analyzed in detail,and the depositional model of the lower-middle Majiagou Formation in the Daniudi Gas Field controlled by sea level fluctuation was established. The sea level was relatively low during the depositional period of the Members 1-3 of the Majiagou Formation,resulting in the development of evaporation platform. The saline lake of the Members 1 and 3 of the Majiagou Formation was mainly distributed in the southeast with the gypseous lake around it. The sea level rose slightly during the depositional period of the Member 2 of the Majiagou Formation,and subsequently muddy-dolomitic flat and gypseous-dolomitic flat developed in the entire study area from bottom to top. The open platform was developed in the Member 4 of the Majiagou Formation when the sea level reached the maximum,and uniformly distributed lime flat and overlying dolomitic-lime flat covered the whole area in the platform. The confined platform predominated the Member 5 of the Majiagou Formation during the regression-transgression-regression. In the Member 5 of the Majiagou Formation,the dolomitic flat of the 7th-10th sub-members covered the whole area,the large extent of muddy-dolomitic flat expanded from northwest to southeast in the 6th sub-member,and the lime flat of the 5th sub-member was developed in the central part with the scattered dolomitic flat around it.

Key words: Ordos Basin, Daniudi Gas Field, Majiagou Formation, carbonate rocks, depositional model

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