Analysis of Two-Phase Gas–Water Flow in Carbonate Reservoirs

Gas–water relative permeability (GWRP) is measured in the tests of full-diameter cores. Based on the obtained GWRP curves, the standard normalized curves are plotted for three types of carbonate reservoirs: matrix pore, fracture and solution pore. The corresponding gas and water two-phase flow model...

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Bibliographic Details
Published in:Journal of mining science 2018-07, Vol.53 (4), p.643-654
Main Authors: Li, C., Zhou, X., You, S., Ibragimov, J. J.
Format: Article
Language:English
Subjects:
Analysis
Carbonates
Cores
Earth and Environmental Science
Earth Sciences
Fracture mechanics
Fracture permeability
Fractures
Gas wells
Geomechanics
Geophysics/Geodesy
Geotechnical Engineering & Applied Earth Sciences
Hydraulic flow
Mineral Resources
Multiphase flow
Oil wells
Permeability
Reservoirs
Rock mechanics
Sensitivity analysis
Two phase flow
Water
Water flow
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Description
Summary:Gas–water relative permeability (GWRP) is measured in the tests of full-diameter cores. Based on the obtained GWRP curves, the standard normalized curves are plotted for three types of carbonate reservoirs: matrix pore, fracture and solution pore. The corresponding gas and water two-phase flow model was deduced by considering stress sensitivity and non-Darcy effect, and the IPR curve calculation and analysis of gas wells of the three types were carried out. Based on huge gap between the matrix and fracture permeability, the phenomenon of gas drive water mainly exists in the cracks. So the conventional gas–water relative permeability of fractured gas reservoirs was modified.
ISSN:1062-7391
1573-8736
DOI:10.1134/S1062739117042631