石油与天然气地质 ›› 2009, Vol. 30 ›› Issue (4): 393-397.doi: 10.11743/ogg20090401

• 烃源岩与油气资源评价 •    下一篇

渤海海域优质烃源岩及其分布预测

庞雄奇1,2, 郭永华3, 姜福杰1,2,4, 尹相东1,2, 马行陟1,2, 郭恩珍1,2   

  1. 1. 中国石油大学盆地与油藏研究中心, 北京, 102249;
    2. 中国石油大学油气资源与探测国家重点实验室, 北京, 102249;
    3. 中海石油(中国)有限公司, 天津分公司, 勘探开发研究院, 天津, 300452;
    4. 新疆大学 地质与勘查工程学院, 新疆, 830046
  • 收稿日期:2009-06-03 出版日期:2009-08-25 发布日期:2012-01-16
  • 基金资助:

    油气资源与探测国家重点实验室项目(PRPDX2008-05);中海石油(中国)有限公司项目(SC06TJ-TQL-004).

High-quality source rocks and their distribution prediction in the Bohai Sea waters

Pang Xiongqi1,2, Guo Yonghua3, Jiang Fujie1,2,4, Yin Xiangdong1,2, Ma XingZhi1,2, Guo Enzhen1,2   

  1. 1. Research Center for Basin and Reservoir, China University of Petroleum, Beijing 102249, China;
    2. State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing 102249, China;
    3. Exploration and Development Research Institute, CNOOC Tianjin Company, Tianjin 300452, China;
    4. Faculty of Geology and Exploration Engineering, Xinjiang University, Urumqi, Xinjiang 830046, China
  • Received:2009-06-03 Online:2009-08-25 Published:2012-01-16

PDF (PC)

743

被引次数

87

摘要：

采用地质统计和地化分析相结合的手段,初步建立了评价和预测优质烃源岩的方法体系,对渤海海域古近系优质烃源岩的发育分布进行了预测.结果表明,纵向上沙河街组优质烃源岩厚度大、品质好,占暗色泥岩比例较大,东营组尽管暗色泥岩厚度较大,其中能达到优质的部分却很少.平面上,渤中凹陷优质烃源岩厚度最大,分布面积最广,其次是辽东湾地区以及岐口凹陷和黄河口凹陷.沙河街组四段+孔店组烃源岩主要发育辽东湾地区、莱州湾凹陷和岐口凹陷.总体而言,沙河街组为渤海海域的主力烃源岩,且以沙河街组三段最为重要.

关键词: 优质烃源岩, 排烃门限, 古近系, 渤海海域

Abstract:

Although dark mudstones are well developed in the Paleogene of the Bohai Sea waters,the major source rocks are still poorly understood,constraining the planning of exploration strategy.To tackle the problem,researchers redefined the high-quality source rocks and preliminarily developed a systemic method for its evaluation and prediction.The method was applied to the prediction of source rocks in the Paleogene in the Bohai Sea waters.The following understandings were obtained.Vertically,the source rocks in the Shahejie Formation are large in thickness,high in quality and relatively large in proportion to the dark mudstones.In contrast,although the dark mudstones in the Dongying Formation are large in thickness,high-quality source rocks are rare.Laterally,source rocks in the Bozhong depression are the largest in both thickness and distribution,followed by Liao-dong Bay,Qikou and Huanghekou depressions.Source rocks of Es4-Ek are mainly developed in Liaodong Bay area,Laizhou Bay and Qikou depressions.In general,the major source rocks in the study area are considered to come from the Shahejie Formation,of which the Es3 is the most important.

Key words: high-quality source rock, expulsion threshold, Paleogene, Bohai Sea waters

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