渤海湾凹陷区复杂断裂带垂向优势运移通道及油气运移模拟
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  • 英文篇名:Vertical dominant migration channel and hydrocarbon migration in complex fault zone, Bohai Bay sag, China
  • 作者:徐长贵 ; 彭靖淞 ; 吴庆勋 ; 孙哲 ; 叶涛
  • 英文作者:XU Changgui;PENG Jingsong;WU Qingxun;SUN Zhe;YE Tao;CNOOC China Limited,Tianjin Branch;
  • 关键词:渤海海域 ; 凹陷区 ; 垂向优势运移通道 ; 复杂断裂带 ; 充注点 ; 新构造运动 ; 大数据分析
  • 英文关键词:offshore Bohai Bay Basin;;sag area;;vertical dominant migration channel;;complex fault zone;;charge points;;Neotectonic movement;;big data analysis
  • 中文刊名:SKYK
  • 英文刊名:Petroleum Exploration and Development
  • 机构:中海石油(中国)有限公司天津分公司;
  • 出版日期:2019-05-07 15:21
  • 出版单位:石油勘探与开发
  • 年:2019
  • 期:v.46;No.271
  • 基金:国家科技重大专项“渤海海域勘探新领域及关键技术研究”(2016ZX05024-003)
  • 语种:中文;
  • 页:SKYK201904007
  • 页数:9
  • CN:04
  • ISSN:11-2360/TE
  • 分类号:68-76
摘要
基于渤海中南部地区复杂断裂带油气地质条件的大数据分析,得到垂向优势运移通道形成的定量/半定量条件。在此基础上,通过构造建模辅助分析,实现了黄河口东洼垂向优势运移通道及其源外充注点/段大数据搜索,并在此约束下进行油气充注、运移数值模拟,成功预测了复杂断裂带浅层的油气运移路径和油气富集断块。研究认为,活动断裂带浅层充注存在差异性,垂向优势运移通道的充注点/段是浅层油气运移的起点,对于浅层油气运移及其成藏非常重要;在浅层的断层中,切割深层中转仓或深层主要运移通道、断接厚度小于400 m、成藏期断层断距大于80 m的断层容易形成凹陷区垂向优势运移通道;新构造运动通过控制垂向优势运移通道及其源外充注点/段的差异分布,决定了复杂断裂带的差异成藏。研究成果对于复杂断裂带的精细勘探具有重要意义。图7参42
        The quantitatively/semi-quantitatively formation conditions of vertical dominant hydrocarbon migration channels were analyzed based on the big data analysis of petroleum geological parameters of complex fault Zone in the central-south Bohai Bay.According to this condition, the vertical dominant migration channel and its charge points/segments are searched through structural modeling assistant analysis in the East Sag of Huanghekou. Under the constraints of charge points/segments, numerical simulation of hydrocarbon charge and migration is carried out to successfully predict hydrocarbon migration paths and hydrocarbon enrichment blocks in shallow layers of complex fault zone. The main results are as follows:(1) The oil and gas charge in shallow formation of the active fault zone is differential, the charge points/sections of vertical dominant migration paths are the starting points of shallow oil and gas migration and are very important for the oil and gas migration and accumulation in the shallow formation.(2) Among the shallow faults,those cutting the deep intermediate layer or deep major migration paths, with fault throw of more than 80 m in the accumulation period and the difference between region cap rock thickness and fault throw of the deep layers of less than 400 m are likely to be vertical dominant migration paths in the sag area.(3) By controlling the vertical dominant migration channels and charging points/segments in carrier layer, Neo-tectonic movement caused the differential oil and gas accumulation in the complex fault zone. The research results are of great significance for the fine exploration of the complex fault zone.
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