Water content of CO/sub 2/ in equilibrium with liquid water and/or hydrates

Journal Article · Tue Dec 01 04:00:00 EST 1987 · SPE (Society of Petroleum Engineers) Format. Eval.; (United States)

OSTI ID:5463245

Song, K Y; Kobayashi, R

Experimentally measured water content in CO/sub 2/-rich fluid in the gaseous or liquid state in equilibrium with liquid water or hydrate is presented for pressures ranging from 100 to 2,000 psia (0.69 to 13.79 MPa) and temperatures from -19 to 77/sup 0/F (-28.33 to 25.0/sup 0/C). The water content of the CO/sub 2/-rich phase along the three-phase equilibria, i.e., liquid water/liquid CO/sub 2//gas to the three-phase critical endpoint, is also reported. The experimental results from this study on the water content in the CO/sub 2/-rich phases have been combined with earlier research results of the CO/sub 2//water binary system in the hydrate-free region from 77 to 200/sup 0/F (25.0 to 93.33/sup 0/C) and pressures to 3,000 psia (20.69 MPa) to produce a comprehensive plot. The high degree of complexity in the phase behavior of a CO/sub 2//water binary system, which exhibits several pairs of equilibrium phases for the conditions, is shown. To make the data more intelligible than they are in their raw form, the data are presented in terms of the pressure enhancement of the water content along isotherms. Finally, the activity coefficients of water in the CO/sub 2/-rich phases are summarized.

• Research Organization: Rice Univ.
• OSTI ID: 5463245
• Journal Information: SPE (Society of Petroleum Engineers) Format. Eval.; (United States), Journal Name: SPE (Society of Petroleum Engineers) Format. Eval.; (United States) Vol. 2:4; ISSN SFEVE
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON DIOXIDE INJECTION
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTION KINETICS
FLUID INJECTION
HIGH PRESSURE
HYDRATES
HYDROGEN COMPOUNDS
KINETICS
LOW TEMPERATURE
MEDIUM TEMPERATURE
MISCIBLE-PHASE DISPLACEMENT
OIL WELLS
OXIDES
OXYGEN COMPOUNDS
REACTION KINETICS
THERMODYNAMIC ACTIVITY
WATER
WATERFLOODING
WELLS