岩性油气藏 ›› 2020, Vol. 32 ›› Issue (1): 102–110.doi: 10.12108/yxyqc.20200111

• 勘探技术 • 上一篇    下一篇

渤海海域庙西中南洼围区烃源岩有机相与测井评价

孙哲, 彭靖淞, 江尚昆, 叶涛, 郭颖   

  1. 中海石油(中国)有限公司天津分公司 渤海石油研究院, 天津 300459
  • 收稿日期:2019-06-11 修回日期:2019-08-16 出版日期:2020-01-21 发布日期:2019-11-22
  • 第一作者:孙哲(1989-),男,硕士,工程师,主要从事油气勘探与综合评价工作。地址:(300459)天津市滨海新区海川路2121号渤海石油管理局B座。Email:sunzhe6@cnooc.com.cn。
  • 基金资助:
    “十三五”国家重大专项“渤海海域勘探新领域及关键技术研究”（编号：2016ZX05024-003）资助

Organic facies and well logging evaluation of source rocks in centeral-south sag of Miaoxi Depression and its surrounding areas,Bohai Sea

SUN Zhe, PENG Jingsong, JIANG Shangkun, YE Tao, GUO Ying   

  1. Research Institute of Bohai Petroleum, Tianjin Branch of CNOOC Limited, Tianjin 300459, China
  • Received:2019-06-11 Revised:2019-08-16 Online:2020-01-21 Published:2019-11-22

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摘要： 针对渤海海域庙西中南洼围区勘探程度低，烃源岩非均质性强等问题，基于烃源岩有机相划分和改进后的烃源岩测井评价方法，结合研究区三维地震资料及沉积体系特征，刻画了庙西中南洼围区沙三段和沙四段烃源岩有机相类型及优质烃源岩发育特征。结果表明：沙三段烃源岩以C相和D/E相为主，烃源岩品质整体较好，但也存在一定的非均质性，C相烃源岩主要分布于庙西中南洼南次洼及黄河口东洼东部与庙西中南洼结合部，北次洼分布相对局限；沙四段烃源岩以F相为主，优质烃源岩发育局限，C相烃源岩主要分布于庙西中南洼南次洼。此次研究认为，庙西中南洼南次洼是沙三段和沙四段优质烃源岩叠合发育区，是下一步勘探应重点关注的有利区带。

关键词: 边缘洼陷, 烃源岩评价, 有机相, 庙西中南洼, 渤海海域

Abstract: Aiming at the problems of low exploration degree and strong heterogeneity of source rocks in the centeral-south sag of Miaoxi Depression and its surrounding area,Bohai Sea,based on the division of organic facies and the improved logging evaluation method of source rocks,combined with 3-D seismic data and the characteristics of sedimentary system in the study area,the organic facies types and the development characteristics of high-quality source rocks of the Es3 and Es4 were described. The results show that the source rocks of Es3 in the study area are mainly C and D/E facies, and the quality of the source rocks is good as a whole, but there is a certain degree of heterogeneity. The C-facies source rocks are mainly distributed in the south subsag of centeral-south sag of Miaoxi Depression and the junction of eastern subsag of Huanghekou sag and centeral-south sag of Miaoxi depression,while the distribution in the north subsag is relatively limited. The organic facies of the source rocks of the Es4 is mainly F facies,and the development of high-quality source rocks is limited. The C facies source rocks are mainly distributed in the south subsag of centeral-south sag of Miaoxi Depression. The south subsag is a superimposed development area of high-quality source rocks of Es3 and Es4,and it is a favorable zone for further exploration.

Key words: marginal depression, source rock evaluation, organic facies, centeral-south sag of Miaoxi Depression, Bohai Sea

中图分类号: 

  • TE122
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