Oil production by gas drive from adjacent strata
Patent
·
OSTI ID:5377102
Oil is produced from an oil stratum lying adjacent but separated from a gas formation by an impermeable barrier by injecting an aqueous flood, such as water free of or containing additives, into the gas formation to force gas into a well communicating with the oil stratum, so as to force the gas into the oil stratum and drive oil into an offset-production well penetrating the oil stratum. A first conduit means is provided communicating with the gas formation, but closed to the oil stratum. A second conduit means offset from the first conduit means is provided communicating with the gas formation and with the oil stratum. A third conduit means offset from the second conduit means is provided communicating only with the oil stratum. Water or aqueous fluid containing conventional additives, if desired, is injected through the first conduit into the gas formation to force gas from it into the second conduit and from there into the oil stratum to build up stratum pressure. (7 claims)
- Assignee:
- Phillips Petroleum Co.
- Patent Number(s):
- US 3476185
- OSTI ID:
- 5377102
- Country of Publication:
- United States
- Language:
- English
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