Determination of miscibility pressure by direct observation method. Quarterly report, January 1-March 31, 1982

Technical Report · Fri Jan 01 00:00:00 EST 1982

DOI:https://doi.org/10.2172/5378978· OSTI ID:5378978

Wang, G. C.

The objective of the project is to conduct laboratory tests to: (1) develop a method for determining MMP through direct observation using a high pressure cell; (2) determine feasibility of in-situ foam generation by visual observation and microphotographic technique. The project is presently organized and carried out in three major fronts: (1) MMP test; (2) high pressure sampling and chemical analysis; and (3) foam study and displacement test. The technical progress in each of these areas is discussed. The effects of temperature on MMP and appearance of CO/sub 2/-rich phase for four crude oils tested are plotted. The MMP is the pressure at which the CO/sub 2/-rich phase becomes miscible with CO/sub 2/ vapor. The results of gas chromatographic analysis for the four crude oils tested are presented. As previously stated the richness of C/sub 5/ to C/sub 20/ components is the key factor for determining the quality and stability of the miscible transition zone. The surfactant/CO/sub 2/ ratio relative to foam quality and foam quantity are presented in a table and also plotted. The plotted figures show: (1) the foam qualities increased as the surfactant rates are decreased; (2) at 75/sup 0/F, the foam quality increases as the pressure is decreased whereas the reverse is true for temperature at 120/sup 0/F; (3) foam generating rate increased with increasing surfactant/CO/sub 2/ ratio; (4) high temperatures tend to lower the rate and high pressures tend to increase the rate at 120/sup 0/F but to decrease at 75/sup 0/F; (5) foam quality was found to be affected more by surfactant/CO/sub 2/ ratio, and to a lesser degree by pressure and temperature. (ATT)

• Research Organization: Alabama Univ., Tuscaloosa (USA). Dept. of Mineral Engineering
• DOE Contract Number: AC21-81MC16140
• OSTI ID: 5378978
• Report Number(s): DOE/MC/16140-T1; ON: DE82013349
• Resource Relation: Other Information: Portions of document are illegible
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CARBON DIOXIDE
PHASE STUDIES
FOAMS
PRODUCTION
MISCIBLE-PHASE DISPLACEMENT
BENCH-SCALE EXPERIMENTS
PETROLEUM
CHEMICAL ANALYSIS
CARBON DIOXIDE INJECTION
EXPERIMENTAL DATA
GAS CHROMATOGRAPHY
HIGH PRESSURE
MEDIUM PRESSURE
MEDIUM TEMPERATURE
PRESSURE DEPENDENCE
RESEARCH PROGRAMS
SURFACTANTS
TEMPERATURE EFFECTS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHROMATOGRAPHY
COLLOIDS
DATA
DISPERSIONS
ENERGY SOURCES
FLUID INJECTION
FOSSIL FUELS
FUELS
INFORMATION
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
SEPARATION PROCESSES
020300* - Petroleum- Drilling & Production
400301 - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)