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U.S. Department of Energy
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Absorption properties of carbon dioxide enhanced-oil-recovery additives. Final Technical report, 12 May 1987-31 August 1989

Technical Report ·
OSTI ID:7156196
The selection of the optimum foaming agent (surfactant) for enhancing oil production by carbon dioxide flooding is based on foamability and adsorption. Measurement of adsorption on carbonate cores from New Mexico reservoirs showed large adsorption differences between three commercial, high-foaming surfactants. An ethoxylated alcohol structure was least adsorbed, 0.64 mg/cc pore volume; an ethoxylated alcohol sulfate was next, 0.74 mg/cc pore volume; the highest adsorbed was a glyceryl sulfonate, 2.30 mg/cc pore volume. Commercial application of the foaming additive involves injecting alternate slugs of surfactant solution and carbon dioxide. Surfactant concentration should be determined to allow for the adsorption above.
Research Organization:
New Mexico State Univ., Las Cruces, NM (USA). Dept. of Chemical Engineering
OSTI ID:
7156196
Report Number(s):
PB-90-182353/XAB; NMERDI--2-75-5231
Country of Publication:
United States
Language:
English