The Characteristics and Impacts Factors of Relative Permeability Curves in High Temperature and Low-Permeability Limestone Reservoirs

Abstract:

To improve the understanding of the influence of effective permeability, reservoir temperature and oil-water viscosity on relative permeability and oil recovery factor, core displacement experiments had been performed under several experimental conditions. Core samples used in every test were natural cores that came from Halfaya oilfield while formation fluids were simulated oil and water prepared based on analyze data of actual oil and productive water. Results from the experiments indicated that the shape of relative permeability curves, irreducible water saturation, residual oil saturation, width of two-phase region and position of isotonic point were all affected by these factors. Besides, oil recovery and water cut were also related closely to permeability, temperature and viscosity ratio.

• Periodical: Advanced Materials Research (Volumes 1010-1012)
• Pages: 1676-1683
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1010-1012.1676
• Online since: August 2014
• Authors: Bin Li*, Wan Fen Pu, Ke Xing Li, Hu Jia, Ke Yu Wang, Zai Guang Yang
• Keywords: Effective Permeability, High Temperature, Limestone Reservoirs, Oil Recovery, Oil-Water Viscosity Ratio, Relative Permeability Curves

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