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Journal of Porous Media
IF: 1.49 5-Year IF: 1.159 SJR: 0.43 SNIP: 0.671 CiteScore™: 1.58

ISSN Print: 1091-028X
ISSN Online: 1934-0508

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Journal of Porous Media

DOI: 10.1615/JPorMedia.v2.i2.20
pages 143-151

Water Alternating Gas Injection: Laboratory Measurement and Comparison with Analytical Calculation

C. Cunha
Department of Mechanical Engineering, Campinas State University, Caixa Postal 6052, 13083 Campinas-SP, Brazil
E. J. Bonet
Department of Petroleum Engineering, State University of Campinas, UNICAMP, Ch P. 6122, Campinas, San Paulo, 13083-970, Brazil
A. C. Correa
Department of Mechanical Engineering, Campinas State University, Caixa Postal 6052, 13083 Campinas-SP, Brazil

ABSTRACT

Water alternating gas injection has been proposed as a method to increase reservoir oil recovery; however, the three-phase flow occurring in this process is somewhat difficult to describe, and many basic data are needed, including the three-phase relative permeabilities. We present measurements from petrophysical data, flowing tests, and analytical calculations for a three-phase flow process. The displacements have been conducted in a steady-state mode. In the analytical calculations we use the water, oil, and gas continuity equations. We solve this hyperbolic system of partial differential equations by the method of characteristics and symbolic calculation facilities. The literature describes the methodology to calculate bank propagation. Here we use a similar methodology to compare the experimental and analytical results to access the validity of the methodology.