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In response to the problems of multiple geological factors controlling shale oil production capacity, difficulty in determining main control factors, and serious impact on target layer optimization and development decision-making, an innovative method for integrated production capacity main control factor analysis using geophysical information is proposed. The specific steps are as follows: based on core well data, establish a “seven nature” logging evaluation method for reservoirs, and determine the vertical and horizontal framework for the development of shale oil in the Qingyi section; Using a three-dimensional geological modeling technique with vertical well logging data as hard constraints and seismic inversion results as soft constraints, establish three-dimensional geological models such as lithology, natural fractures, nuclear magnetic porosity, free hydrocarbon S1, brittleness, and geostress; Using tracer wells to detect production capacity data and 3D geological models to analyze the correlation between geological parameters and production capacity section by section, and determining the parameters with high correlation as the main control parameters. Using numerical simulation methods, clarify the control effect of the interlayer on the vertical extension of artificial cracks. This method has determined the main controlling factors for the production capacity of Gulong shale oil: the position relationship between horizontal wells and interlayers is the first element, nuclear magnetic porosity (cut-off value of 8 ms) is the second element, natural fracture zones are the third element, and free hydrocarbon S1 is the fourth element. The relationship between other geological parameters and production capacity is not clear. The research findings have guided the deployment of over 340 development wells in the Q9 oil reservoir group of Gulong shale oil in 2024. The use of integrated geophysical analysis methods to determine the main controlling factors of production capacity has reference and guiding significance for similar regions.

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Research on the Analysis Method of Main Control Factors for Shale Oil Production Capacity Based on Geophysical Integration—Taking Gulong Shale Oil in the Songliao Basin as an Example

  • 会议论文

  • 发表日期：

    2025年

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  • Hao Qin,
  • Zhi-hui Yang,
  • Chuan-gang Xiang,
  • Kui-zhou Li,
  • Jian-liang Zhang,
  • Chun-yan Wang,
  • Shao-jia Lei,
  • Jian-dong Zheng

摘要

In response to the problems of multiple geological factors controlling shale oil production capacity, difficulty in determining main control factors, and serious impact on target layer optimization and development decision-making, an innovative method for integrated production capacity main control factor analysis using geophysical information is proposed. The specific steps are as follows: based on core well data, establish a “seven nature” logging evaluation method for reservoirs, and determine the vertical and horizontal framework for the development of shale oil in the Qingyi section; Using a three-dimensional geological modeling technique with vertical well logging data as hard constraints and seismic inversion results as soft constraints, establish three-dimensional geological models such as lithology, natural fractures, nuclear magnetic porosity, free hydrocarbon S1, brittleness, and geostress; Using tracer wells to detect production capacity data and 3D geological models to analyze the correlation between geological parameters and production capacity section by section, and determining the parameters with high correlation as the main control parameters. Using numerical simulation methods, clarify the control effect of the interlayer on the vertical extension of artificial cracks. This method has determined the main controlling factors for the production capacity of Gulong shale oil: the position relationship between horizontal wells and interlayers is the first element, nuclear magnetic porosity (cut-off value of 8 ms) is the second element, natural fracture zones are the third element, and free hydrocarbon S1 is the fourth element. The relationship between other geological parameters and production capacity is not clear. The research findings have guided the deployment of over 340 development wells in the Q9 oil reservoir group of Gulong shale oil in 2024. The use of integrated geophysical analysis methods to determine the main controlling factors of production capacity has reference and guiding significance for similar regions.