A laboratory study of CO/sub 2/ and H/sub 2/ miscible injection in an oil-filled porous medium

Thesis/Dissertation · Sat Jan 01 04:00:00 EST 1977

OSTI ID:6604215

Henry, R L

Two sets of experiments were conducted to investigate oil recovery from a linear sand pack using carbon dioxide, hydrogen sulfide, and mixtures of these 2 gases as the displacing fluid. A light synthetic oil was used as the in-place oil in the first set of experiments. Flood pressure ranged from 250 to 1,500 psig and injection slug sizes ranged from 0 (waterflood) to 60% of pore volume. Water or brine was used to push the slug of CO/sub 2/ and/or H/sub 2/ through the sand pack. For the flood rates used, oil recovery was less for an 8.8% pore volume injection slug than for a 17.7% pore volume injection slug. Water would apparently finger through the oil-solvent mixing zone for the smaller slug, resulting in an immiscible displacement front. A heavy crude oil (11.9'API gravity) was used as the oil is place in the second set of experiments. Flood pressures ranged from 1,000 to 2,000 psig. One and one-half pore volumes of CO/sub 2/ and/or H/sub 2/ were injected in each experiment. The temperature was 80'F and the flood rate averaged 72 ft/day. The heavy crude oil and the injection fluid were not miscible in the pressure range studied.

• OSTI ID: 6604215
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
BENCH-SCALE EXPERIMENTS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
ENHANCED RECOVERY
FLUID INJECTION
FUELS
GAS INJECTION
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
OIL WELLS
OXIDES
OXYGEN COMPOUNDS
RECOVERY
STIMULATION
SULFIDES
SULFUR COMPOUNDS
SWEEP EFFICIENCY
SYNTHETIC FUELS
SYNTHETIC PETROLEUM
WELL STIMULATION
WELLS