Glenn Pool surfactant flood pilot tests, Part II: Field operations
A surfactant flood pilot test was conducted in a 20-acre, four inverted five-spot pattern in the Glenn Pool Field. The field had been waterflooded and the pay zone, the Upper Sand, was at a depth of 1500 feet. The crude oil had a viscosity of 4.0 cp at a reservoir temperature of 95/sup 0/F. The process consisted of sequential injection of 35% PV of preflush, 10% PV of sulfonate slug and 35% PV of polymer solution, followed by drive water. Injection operation was smooth as no injection well plugging was observed during sulfonated and polymer solution injection. On the other hand, production operation was somewhat hampered due to plugging of producers. Low equivalent weight sulfonate precipitated out around the producers and contributed to the plugging problem. Solvent treatment corrected this situation quite effectively. Although a large oil bank was observed in the two observation wells and all other observation well behavior indicated a successful process performance, the total oil production was rather disappointing. About 63,000 barrels of incremental oil were produced. During the test, through reinterpretation of existing data and a pulse test program, it was established that there was no clear separation between the Upper and Middle Sands. The impermeable shale streaks separating these two zones were not continuous. The implication was that injected fluids were not confined in the Upper Sand. This made the interpretation of field data very difficult.
- Research Organization:
- Chevron Oil Field Research Co.
- OSTI ID:
- 7159749
- Report Number(s):
- CONF-861080-
- Country of Publication:
- United States
- Language:
- English
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Glenn Pool surfactant flood pilot test: Comparison of laboratory and observation-well data
Glenn pool surfactant flood pilot test: comparison of laboratory and observation well data
Related Subjects
020300* -- Petroleum-- Drilling & Production
CHEMICAL COMPOSITION
DATA ANALYSIS
DESCALING
DISPLACEMENT FLUIDS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUELS
GEOLOGIC DEPOSITS
MEDIUM TEMPERATURE
MINERAL RESOURCES
OIL FIELDS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PERFORMANCE
PERMEABILITY
PETROLEUM
PETROLEUM DEPOSITS
PLUGGING
POLYMERS
PRECIPITATION
PRODUCTION
RECOVERY
RESERVOIR ROCK
RESERVOIR TEMPERATURE
RESOURCES
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
SEPARATION PROCESSES
SHALES
STIMULATION
SULFONATES
SURFACE FINISHING
SURFACTANTS
SWEEP EFFICIENCY
TESTING
VISCOSITY
WATERFLOODING
WELL STIMULATION
WELLS