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<p>Based on the study of the migration mechanism and form distribution of the source-fault-cap coupling oil and gas to the overlying reservoir, the source-fault coupling oil and gas migration parts of different types of sources are determined by using the oil and gas supply parts of different types of sources and the fracture migration parts. Using the relative thickness of ancient fault of mudstone caprock, the distribution position of fault-cap coupling oil and gas migration form is determined. The superposition of the two has established a set of research methods for the distribution of source-fault-cap coupling oil and gas migration to the overlying reservoir. It is used to study the distribution of oil and gas migration from the source rock of the third member of the Shahejie Formation (Es<sub>3</sub>), the Nandagang fault and the mudstone caprock of the middle sub-member of the first member of Shahejie Formation(E<sub>s1</sub><sup>z</sup>) to the third member of the Dongying Formation(Ed<sub>2</sub>) in the Qikou Sag of the Bohai Bay Basin. The results show that there are four types of oil and gas migration from the source rock of Es<sub>3</sub>, the Nandagang fault and the mudstone caprock of E<sub>s1</sub><sup>z</sup> to Ed<sub>2</sub>. It shows that this method is feasible to study the distribution of source-fault-cap coupling oil and gas migration to overlying reservoirs.</p>

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Research Method and Application of Source-Fault-Cap Coupling Oil and Gas Migration to Overlying Reservoir Distribution

  • 期刊论文

  • 发表日期：

    2026年1月1日

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  • Li Xiaomei,
  • Yang Liang,
  • Sun Lidong,
  • Liu Jiajun,
  • Li Guozheng,
  • Cai Zhuang,
  • Hu Bo,
  • Du Ying,
  • Zhang Bowei,
  • Jiang Fei,
  • Zhang Jiao,
  • Tian Yan

摘要

Based on the study of the migration mechanism and form distribution of the source-fault-cap coupling oil and gas to the overlying reservoir, the source-fault coupling oil and gas migration parts of different types of sources are determined by using the oil and gas supply parts of different types of sources and the fracture migration parts. Using the relative thickness of ancient fault of mudstone caprock, the distribution position of fault-cap coupling oil and gas migration form is determined. The superposition of the two has established a set of research methods for the distribution of source-fault-cap coupling oil and gas migration to the overlying reservoir. It is used to study the distribution of oil and gas migration from the source rock of the third member of the Shahejie Formation (Es3), the Nandagang fault and the mudstone caprock of the middle sub-member of the first member of Shahejie Formation(Es1z) to the third member of the Dongying Formation(Ed2) in the Qikou Sag of the Bohai Bay Basin. The results show that there are four types of oil and gas migration from the source rock of Es3, the Nandagang fault and the mudstone caprock of Es1z to Ed2. It shows that this method is feasible to study the distribution of source-fault-cap coupling oil and gas migration to overlying reservoirs.