Effect of an aqueous phase on CO/sub 2//tetradecane and CO/sub 2//Maljamar-crude-oil systems
The effect of the presence of an aqueous phase on the phase behavior of the CO/sub 2//tetradecane and the CO/sub 2//Maljamar-crude-oil systems has been experimentally determined. Both the salinity and the amount of the aqueous phase were varied to test several methods of modeling. In the first technique, the amount of CO/sub 2/ ''lost'' to the aqueous phase was determined using Henry's law, decreasing the overall ratio of CO/sub 2/ to hydrocarbons, while the Peng-Robinson equation of state (PR EOS) was used to determine the phase distribution of the hydrocarbon phases. In the second technique, the equation of state (EOS) was modified to predict the densities and compositions of not only the hydrocarbon phases, but also the aqueous phase. Simply accounting for CO/sub 2/ solubility by incorporating Henry's law, used in conjunction with the Poynting correction and an empirical factor for salinity, not only gave results nearly identical with the EOS approach, but also required less computational effort. Both methods gave good agreement with the experimental data.
- Research Organization:
- Univ. of Pittsburgh (US)
- OSTI ID:
- 6680517
- Journal Information:
- SPE (Society of Petroleum Engineers) Reserv. Eng.; (United States), Vol. 3:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CARBON DIOXIDE
INTERACTIONS
DECANE
DISPLACEMENT FLUIDS
OIL WELLS
CARBON DIOXIDE INJECTION
PETROLEUM
AQUEOUS SOLUTIONS
ENHANCED RECOVERY
EQUATIONS OF STATE
PHASE STUDIES
SOLUBILITY
WELL STIMULATION
ALKANES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
DISPERSIONS
ENERGY SOURCES
EQUATIONS
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUELS
HYDROCARBONS
MISCIBLE-PHASE DISPLACEMENT
MIXTURES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
RECOVERY
SOLUTIONS
STIMULATION
WELLS
020300* - Petroleum- Drilling & Production