Xinjiang Petroleum Geology ›› 2008, Vol. 29 ›› Issue (4): 502-503.

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Permeability Up-Scaling Method Based on the Relationship Between Porosity and Permeability

FENG Ming-sheng1, YUAN Shi-yi2, ZHAO Li-min1, XU An-zhu1   

  1. 1. International Research Center, CNPC, Beijing 100083;
    2. Department of Sci-Tech Development, CNPC, Beijing 100000
  • Received:2007-12-04 Published:2020-10-09

Abstract: Permeability can be estimated using the porosity from logging interpretation and the porosity-permeability model from the core analysis. Permeability up-scaling can be done by the thickness weighted-average method or the geometric average method. This paper first proved that, permeability calculated from the thickness weighted averaged porosity and the porosity-permeability model is equal to that obtained from the geometric average method, rather than that from the thickness weighted-average method. It also proved that the geometric averaged permeability is less than or equal to the thickness weighted-average one. This shows that different up-scaling methods lead to great different permeability values.

Key words: model, average porosity, average permeability, well logging, core

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