Heavy oil recovery by CO/sub 2/ immiscible displacement method

Technical Report · Tue Apr 01 04:00:00 EST 1986

OSTI ID:5961421

Chung, T H

Heavy oil recovery techniques are being developed at the National Institute for Petroleum and Energy Research (NIPER) in Bartlesville, Oklahoma. This report describes the results of studies made to investigate the mechanisms of immiscible CO/sub 2/ displacement for heavy oil recovery. Viscosity reduction, oil swelling, and hydrocarbon extraction are the major mechanisms being studied. Measurements of viscosity reduction, density change, swelling factor, and CO/sub 2/-solubility have been conducted for 7 heavy crudes with API gravity in the range of 10/sup 0/ to 22/sup 0/. A correlation has been developed between the viscosity reduction and the quantity of CO/sub 2/ dissolved. The viscosity correlations developed in this work can be used to predict the viscosity of heavy oils and mixtures of CO/sub 2/ for process design and simulation of immiscible displacement process. The extraction of oil by high pressure CO/sub 2/ has also been studied. Laboratory tests were conducted to determine the quantity of oil extracted by CO/sub 2/ from a heavy crude (21.6/sup 0/ API gravity) at 2000 and 3000 psig, and at temperatures of 100/sup 0/ F and 150/sup 0/F. Information from such laboratory results can be used in the design and implementation of more effective and economical immiscible CO/sub 2/ displacement for oil recovery projects. 27 refs., 22 figs., 14 tabs.

• Research Organization: National Inst. for Petroleum and Energy Research, Bartlesville, OK (USA)
• DOE Contract Number: FC22-83FE60149
• OSTI ID: 5961421
• Report Number(s): NIPER-76; ON: DE86000281
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
API GRAVITY
BENCH-SCALE EXPERIMENTS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON DIOXIDE INJECTION
CARBON OXIDES
CHALCOGENIDES
CORRELATIONS
DATA
DENSITY
DISPERSIONS
ENERGY SOURCES
ENHANCED RECOVERY
ENTHALPY
EQUATIONS
EQUATIONS OF STATE
EXPERIMENTAL DATA
EXTRACTION
FLUID INJECTION
FOSSIL FUELS
FUELS
HIGH PRESSURE
INFORMATION
MEDIUM PRESSURE
MEDIUM TEMPERATURE
MISCIBLE-PHASE DISPLACEMENT
MIXTURES
NUMERICAL DATA
OIL WELLS
OPTIMIZATION
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
PHYSICAL PROPERTIES
PRESSURE EFFECTS
RECOVERY
RESEARCH PROGRAMS
SEPARATION PROCESSES
SOLUBILITY
SOLVENT PROPERTIES
SWELLING
TEMPERATURE EFFECTS
THERMODYNAMIC PROPERTIES
VISCOSITY
WELLS