岩性油气藏 ›› 2018, Vol. 30 ›› Issue (2): 58–66.doi: 10.12108/yxyqc.20180207

• 油气地质 • 上一篇    下一篇

珠江口盆地中中新世陆架边缘三角洲的类型及控制因素

李文静1, 王英民1,3, 何敏2, 陈维涛2, 徐少华3,4, 卓海腾1,5   

  1. 1. 浙江大学 海洋学院, 浙江 舟山 316021;
    2. 中海石油(中国)有限公司深圳分公司, 深圳 518000;
    3. 中国石油大学(北京)油气资源与探测国家重点实验室, 北京 102249;
    4. 重庆科技学院复杂油气田勘探开发重庆市重点实验室, 重庆 401331;
    5. 中国科学院 边缘海与大洋地质重点实验室(南海海洋研究所), 广州 510301
  • 收稿日期:2017-11-27 修回日期:2018-02-01 出版日期:2018-03-21 发布日期:2018-03-21
  • 通讯作者: 卓海腾(1986-),男,博士,助理研究员,主要从事层序地层学、沉积学等方面的研究工作。Email:zhuohaiteng@hotmail.com。 E-mail:zhuohaiteng@hotmail.com
  • 作者简介:李文静(1993-),女,浙江大学在读硕士研究生,研究方向为地震资料解释、石油地质。地址:(316021)浙江省舟山市定海区浙江大学舟山校区遵义南楼201。Email:18810671029@163.com。
  • 基金资助:
    国家自然科学基金项目“南海珠江口陆架区第四纪高精度层序地层构型、时空差异及控制因素（编号：41706050）”和“南海的破裂不整合与各次海盆的海底初始扩张年代（编号：41572083）”联合资助

Types and controlling factors of shelf margin delta of Middle Miocene in Pearl River Mouth Basin

LI Wenjing1, WANG Yingmin1,3, HE Min2, CHEN Weitao2, XU Shaohua3,4, ZHUO Haiteng1,5   

  1. 1. Ocean College, Zhejiang University, Zhoushan 316021, Zhejiang, China;
    2. CNOOC Limited-Shenzhen Branch, Shenzhen 518000, China;
    3. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China;
    4. State Key Laboratory of Exploration of Complex Gas and Oil Field in Chongqing Province, Chongqing University of Science and Technology, Chongqing 401331, China;
    5. Key Laboratory of Ocean and Marginal Sea Geology, Chinese Academy of Sciences, South China Sea Institute of Oceanology, Guangzhou 510301, China
  • Received:2017-11-27 Revised:2018-02-01 Online:2018-03-21 Published:2018-03-21

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摘要： 陆架边缘三角洲研究对于区域水动力条件分析及深水油气勘探具有重要意义。运用二维、三维地震数据及测井曲线等，通过地震剖面内部层序划分、平面属性与切片提取分析、测井相解释等手段，在中中新世晚期南海北部珠江口盆地珠二坳陷识别出可容空间驱动的河控、浪控及河流-波浪交互作用3种类型的陆架边缘三角洲。陆架边缘三角洲的发育规模受相对海平面变化的影响，形成位置与高位体系域背景下水道的发育位置相关。珠江口盆地中中新世陆架边缘三角洲物性较好，储盖组合良好，具有一定的油气勘探潜力。

关键词: 致密砂岩, 高压压汞, 孔隙分类, 分形维数, 储层评价, 冀中坳陷

Abstract: The research of shelf margin delta has important significant for the analysis of hydrodynamic conditions and exploration of deep water hydrocarbon. The high-quality 2D and 3D seismic data and well logs were used to divide the internal sequence in seismic profile, and analyze the plane attribute distribution and well logging interpretation. Three types of shelf margin delta were identified in Middle Miocene in Zhu 2 Depression of Pearl River Mouth Basin, including fluvial-dominated, wave-dominated and mutual-influenced shelf margin delta. The fluvial-dominated shelf margin delta developed in lowstand system tract in Kaiping Sag, the wave-dominated type developed in falling-stage system in Baiyun Sag. The mutual types developed in falling-stage system in Kaiping Sag. The sequence and types of shelf margin deltas are influenced by the change of sea level and hydrodynamic conditions. While the developed location close to channel position in earlier high stand tract and further extended to the shelf margin delta. What more, the main body of shelf margin delta transfers from Baiyun Sag to Kaiping sag gradually, which was affected by the local change of source supply caused by neotectonic movement, including the activities of Dongsha uplift and Yunkai uplift. Finally, the shelf margin deltas show favorable reservoir quality, which can be good oil-gas exploration targets.

Key words: tight sandstone, mercury intrusion capillary pressure, pore classification, fractal dimension, reservoir evaluation, Jizhong Depression

中图分类号: 

  • P618.13
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