A research on the relationship between resistivity index and relative permeability at different measurement conditions based on the pore structure

作者：Guo, Yu-hang^*; Pan, Bao-zhi; Liu, Wen-bin

来源：Environmental Fluid Mechanics, 2016, 16(6): 1129-1141.

DOI：10.1007/s10652-016-9469-9

• Wetting phase tortuosity ratio
• Relative permeability
• Pore structure
• Resistivity index
• Wetting phase saturation

Relative permeability and resistivity index are important parameters in petro-physics experiments and reservoir evaluations. According to the results of previous studies, there exists a relationship between resistivity index and relative permeability in in situ reservoir condition and a lot of transformation models were established. In this paper, we compared the relative permeability which was calculated from the resistivity index measured in different conditions (in situ reservoir condition and conventional condition), and the result shows that the relative permeabilities are similar. If core samples are fragile and not resistant to high temperature or high pressure, it is possible to use resistivity index measured in conventional condition to get the relative permeability which provides a convenient way for experimental measurement and reservoir evaluation. In practical applications, the results show that the pore structure make a great influence on the relationship between wetting phase tortuosity ratio and resistivity index. Therefore, in this study we took the difference of pore structure into account when deciding model parameters by core analysis, and the verification results are basically consistent with the laboratory measurement results.

• 出版日期2016-12
• 单位吉林大学