岩性油气藏 ›› 2018, Vol. 30 ›› Issue (5): 1–10.doi: 10.12108/yxyqc.20180501

• 油气地质 •    下一篇

渤中凹陷石南陡坡带东三段源汇体系定量表征

杜晓峰, 王清斌, 庞小军, 代黎明, 张参   

  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:2018-03-01 修回日期:2018-04-02 出版日期:2018-09-14 发布日期:2018-09-14
  • 通讯作者: 庞小军(1985-),男,工程师,主要从事石油地质研究工作。Email:pangxiaojun@126.com。 E-mail:pangxiaojun@126.com
  • 作者简介:杜晓峰(1974-),男,高级工程师,主要从事石油地质与勘探综合研究工作。地址:(300459)天津市塘沽区海川路2121号渤海石油研究院。Email:duxf@cnooc.com.cn
  • 基金资助:
    “十三五”国家重大科技专项“渤海海域勘探新领域及关键技术研究”（编号：2016ZX05024003）资助

Quantitative characterization of source-sink system of Ed3 in Shinan steep slope zone,Bozhong Depression

DU Xiaofeng, WANG Qingbin, PANG Xiaojun, DAI Liming, ZHANG Can   

  1. Bohai Oilfield Research Institute, Tianjin Branch of CNOOC Ltd., Tianjin 300459, China
  • Received:2018-03-01 Revised:2018-04-02 Online:2018-09-14 Published:2018-09-14

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摘要： 为解决渤中凹陷石南陡坡带东三段砂砾岩储层分布等问题，利用三维地震、钻井、分析化验等资料，对东三段源汇体系中形成砂砾岩的关键要素进行了定量表征。结果表明：①东三段储层主要为扇三角洲砂砾岩，其物源区母岩岩性多样，南部母岩主要为中生界火山岩；西北部母岩为火山岩、碳酸盐岩和花岗岩。②物源区发育5个面积大、延伸远的陡坡沟谷体系，输送了大量的砂砾岩沉积物。③东三段的沉积古地形以断槽型为主，由西向东，断层呈分段式活动，造成了物源和沉积区的差异升降。④砂砾岩的延伸距离与湖平面的升降呈此消彼长的关系，湖平面离物源越近，砂砾岩延伸越近；反之，砂砾岩延伸距离越远。该认识可为断陷盆地陡坡带的砂砾岩储层评价提供依据。

关键词: 砂砾岩, 源汇体系, 沟谷体系, 东营组, 渤中凹陷

Abstract: In order to solve the glutenite reservoir distribution of the third member of Paleogene Dongying Formation(Ed3) in the Shinan steep slope zone of Bozhong Depression,using 3D seismic interpretation,drilling, experimental data,the key factors(parent rock,valley system,fault active rate,sedimentary paleo-terrain,lakelevel change) in the source-sink system were quantitatively characterized. The results show:(1) The reservoirs in the Ed3 are mainly fan delta facies. The lithologies of their parent rock are composed of Mesozoic volcanic rocks in the south and volcanic rocks,carbonate rocks and granites in the northwest.(2) Five large and long valley systems are identified,which carry larger volume of glutenite from the provenance zone to the sink zone.(3) The Ed3 sedimentary palaeogeography is dominated by faults,which are characterized by segmented activities. The difference in activity results in the difference between the source and the sink zone.(4) The extension distance of the gravel is positively related to the decline of the slop. The closer the lake surface is to the source,the shorter the gultenite extends;conversely,the longer the glutenite extends. The scale of the glutenite is affected by the influence of source system,fault activity and lake level. The erosion of the source and the paleogeomorphology of the sink zone are mainly controlled by the fault activity. This rule provides a reference for the evaluation of glutenite reservoir in steep slope of faulted basin.

Key words: glutenite, source-sink system, valley system, Dongying Formation, Bozhong Depression

中图分类号: 

  • TE122.1
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