Numerical modeling of the coupled flow of brine and oil in hydrocarbon reservoirs

Suarez Arriaga, Mario Cesar and Samaniego, Fernando and Bundschuh, Jochen (2009) Numerical modeling of the coupled flow of brine and oil in hydrocarbon reservoirs. In: Numerical modeling of coupled phenomena in science and engineering: practical use and examples. Multiphysics Modeling, 1. Taylor & Francis (CRC Press), London, United Kingdom, pp. 335-346. ISBN 9780415476287

Abstract

In the southern coast of the Gulf of Mexico some deep geothermal aquifers are associated with hydrocarbon reservoirs. Some of their wells are invaded by geothermal brine, producing a variable mixture of hot water and oil. This water, at temperatures of 150°C and having a density of 1150kg/m3, flows vertically through a fault in the aquifer located at a depth of 6000m. The non-isothermal conditions affect the effective saturations and the relative permeabilities of the immiscible phases. The relative permeability of oil is increased by the increase of temperature produced by the geothermal water. This effect reduces there residual saturation of heavy oils. At the same time, the dynamic viscosities of water and oil are diminished, affecting the displacement of both fluids. Although the oil is extracted in wells which end in the upper boundary of the aquifer, the total volume of produced water in some cases equals or exceeds the oil production. The handling of this extra hot water becomes a serious practical problem. We introduce a numerical original model able to predict the critical oil rate for which the well can be totally invaded by geothermal brine.


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Item Type: Book Chapter (Commonwealth Reporting Category B)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to published version due to publisher copyright policy.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 27 Oct 2014 00:24
Last Modified: 12 Sep 2016 02:36
Uncontrolled Keywords: numerical modelling; brine; oil; hydrocarbon reservoirs
Fields of Research : 04 Earth Sciences > 0406 Physical Geography and Environmental Geoscience > 040603 Hydrogeology
04 Earth Sciences > 0404 Geophysics > 040403 Geophysical Fluid Dynamics
09 Engineering > 0913 Mechanical Engineering > 091307 Numerical Modelling and Mechanical Characterisation
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970104 Expanding Knowledge in the Earth Sciences
URI: http://eprints.usq.edu.au/id/eprint/26254

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