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The original oil volume factor and GOR are essential parameters for STOIIP estimation and reservoir development plans design. The accuracy of these data affects the accuracy of STOIIP evaluation and production calculations directly. This paper points out the problems in the determination of oil volume factor and GOR by combing the experimental conditions and connotations of multiple PVT experiments and the actual situation of oilfield development facility. An improved method for determining the original oil volume factor of unsaturated reservoirs by combining PVT experimental data and pressure measurement data. Differences comparison and the impact on STOIIP calculation are analyzed in one actual oilfield.

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An Improved Method for Determining the Original Oil Volume Factor of Unsaturated Reservoirs

  • 会议论文

  • 发表日期：

    2025年

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  • Wu Jing,
  • Liu Jun,
  • He Chunbai,
  • Pan Jie,
  • Sun Run-ping

摘要

The original oil volume factor and GOR are essential parameters for STOIIP estimation and reservoir development plans design. The accuracy of these data affects the accuracy of STOIIP evaluation and production calculations directly. This paper points out the problems in the determination of oil volume factor and GOR by combing the experimental conditions and connotations of multiple PVT experiments and the actual situation of oilfield development facility. An improved method for determining the original oil volume factor of unsaturated reservoirs by combining PVT experimental data and pressure measurement data. Differences comparison and the impact on STOIIP calculation are analyzed in one actual oilfield.