Reservoir Characterization and CO2-EOR Injection Pilot Studies in Chicontepec Turbidite Reservoirs, Mexico

Chicontepec fields are tight clastic deposits comprised of stacked turbiditic events with extreme geological heterogeneity and variable heavy oil content. Huge reserves of oil are left behind because of loss of system energy by primary depletion; offering challenging opportunities for IOR/EOR processes. We first present a general methodology for integrated geostatistical reservoir characterization, using the technique of multivariate multiGaussian formalism for the integration of data sources and scales. The resulting geostatistical models are calibrated to available production data, and used as predictive tools for CO2-EOR and alternative solvent injection studies in simulated sector model pilots.