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Título del libro: Computer Methods And Recent Advances In Geomechanics Título del capítulo: Salt domes deformation coupled to the flow of geothermal brine and oil
Some hydrocarbon reservoirs are associated with deep aquifers, producing
a mixture of hot brine and oil. The invasion of this brine into the oil
reservoir has a negative influence on hydrocarbon extraction. Brine
migration occurs at temperatures around 160 degrees C and at high
pressures of over 128.4 MPa. Relative permeabilities and saturations are
affected by this temperature. Oil-water dynamic viscosities are
diminished, affecting the displacement of both fluids. Extracted water
can even exceed oil production, becoming a very expensive engineering
problem. The high concentrations of dissolved salts and minerals in
wells of the Bellota-Jujo, Mexico reservoir, indicate the presence of
salt domes underlying the oil field. This brine invasion involves
typical geothermal phenomena coupled to the extraction of oil with salt
dome deformation. The geomechanics of the stresses and strains was
modeled with finite elements computing the maximum deformation. For the
coupled two-phase fluid flow a numerical model was developed, which
depends only on oil saturation. A 1D stationary solution is deduced that
allows approximating the unknown oil-water contact zone.
Entidades citadas de la UNAM:
Fuente:
ISBN: 9781315733197 Editorial: CRC PRESS-TAYLOR & FRANCIS GROUP
