CO/sub 2/ flood performance evaluation for the Cornell unit, Wasson San Andres field

Journal Article · Fri Oct 01 04:00:00 EDT 1982 · J. Pet. Technol.; (United States)

DOI:https://doi.org/10.2118/10292-PA· OSTI ID:6329656

Todd, M R; Cobb, W M; McCarter, E D

A numerical reservoir simulator has been used to predict CO/sub 2/ enhanced oil recovery (EOR) performance for two process designs, either of which could be implemented at the Cornell Unit, Wasson San Andres field. The two CO/sub 2/ displacement processes examined are a straight CO/sub 2/ slug followed by continuous water injection, and a water-alternating gas (WAG) process with CO/sub 2/, followed by continuous water injection. Predicted recovery performances were found sensitive to viscous, capillary, and gravity-driven crossflow, as well as to reservoir stratification. Hence, evaluation of alternative process designs was influenced strongly by assumed values of effective vertical permeability within continuous pay intervals, even though the vertical permeability between major pay intervals is effectively zero. Work involving a no-crossflow stratification model of the Wasson pay suggested that a straight CO/sub 2/ slug process would be preferable to a WAG process. On the other hand, work with a stratification model that allowed intrazone crossflow indicated that recovery could be improved significantly for a given size CO/sub 2/ slug by means of a WAG process.

• Research Organization: SPE, Todd, Dietrich and Chase
• OSTI ID: 6329656
• Journal Information: J. Pet. Technol.; (United States), Journal Name: J. Pet. Technol.; (United States) Vol. 34:10; ISSN JPTJA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
CARBON DIOXIDE INJECTION
ENERGY SOURCES
ENHANCED RECOVERY
EVALUATION
FLUID FLOW
FLUID INJECTION
FOSSIL FUELS
FUELS
MISCIBLE-PHASE DISPLACEMENT
OIL WELLS
PERMEABILITY
PETROLEUM
RECOVERY
SIMULATION
STIMULATION
STRATIFICATION
WATERFLOODING
WELL STIMULATION
WELLS