Analysis and Evaluation of Oil-water Relative Permeability Curves

Yang Manping*, Xi Wancheng, Zhao Xiaojing, Cheng Yanhong
Petroleum Department of Yanshan University, Qinhuangdao, Hebei, 066004, P.R. China.

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© 2015 Manping et al.;

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Correspondence: * Address correspondence to this author at the Petroleum Department of Yanshan University, Qinhuangdao, Hebei, 066004, P.R. China.


Oil-water relative permeability curves are the characteristic curves of evaluating the oil-water infiltrating fluid and also are an important part of reservoir engineering studies. Through a large number of core flooding experiments, based on the establishment of oil-water relative permeability calculation models, the use of the function of the relative permeability curves divided these into the water phase concave, water phase convex and a water phase linear categories. The relationship between different types of relative permeability curves with reservoir characteristics, moisture content, common infiltration points, common permeation range and oil displacement efficiency have been evaluated. Analysis the distribution of the reservoir usable remaining oil and reservoir irreducible oil of different types of relative permeability curves.

Keywords: Curve classifications , distribution of irreducible oil, distribution of usable oil, oil-water relative permeability curves.