El Dorado Micellar-Polymer Demonstration Project. Fourth annual report, September 1977--August 1978

Technical Report · Sun Apr 01 04:00:00 EST 1979

OSTI ID:6324814

Rosenwald, G W ^[1]

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1. ed.

Specifications were determined for the surfactant concentrate and Abbott xanthan gum broth to be used in the north (Chesney) pattern and the Nalco polyacrylamide concentrate to be used in the south (Hegberg) pattern. Results are given for oil displacement tests using the south pattern micellar-polymer fluid sequence in reservoir cores. The data from observation wells MP-131 and MP-227 indicate the breakthrough of alcohol and surfactants. These chemicals at the observation wells signal the probable arrival of the oil banks. Salinity remained constant in the production wells during the last year. The pressures in the project monitoring wells were measured six times during this reporting period. Temperature profiles were determined in four south pattern wells during micellar (soluble) oil injection since it had been shown that allowing the micellar oil to cool would adversely affect its injectivity. The addition of a wax inhibitor and a solvent to the Greenwood County crude oil used in the micellar oil improved the fluid injectivity. Performance monitoring, performance forecasting, and associated program development work have been undertaken. A study of monitoring well pressures indicates a possible west-to-east pressure gradient. An analysis of micellar fluid injectivity data for the north pattern shows that most of the injectivity losses have been caused by sandface skin. Forecasts of flood-front locations illustrate the effects of well rate balance and pressure gradient on areal sweep.

• Research Organization: Department of Energy, Washington, DC (USA)
• OSTI ID: 6324814
• Report Number(s): BETC-1800-40
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ALCOHOLS
DEMONSTRATION PROGRAMS
ENHANCED RECOVERY
FLUID INJECTION
GUMS
HYDROXY COMPOUNDS
MICROEMULSION FLOODING
MISCIBLE-PHASE DISPLACEMENT
MONITORING
OIL WELLS
ORGANIC COMPOUNDS
PERFORMANCE
PRESSURE GRADIENTS
SURFACTANTS
TEMPERATURE GRADIENTS
WELLS