Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Recovering oil by injecting aqueous alkali, cosurfactant and gas

Recovering oil by injecting aqueous alkali, cosurfactant and gas

US Patent 4493371 · Granted Jan 15, 1985

Estimated economic value: $15,036,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Conductor-in-conduit heat sources for in situ thermal processing of an oil shale2006
In situ thermal processing of a hydrocarbon containing formation using conductor2004
Method for remediating near-surface contaminated soil2002
Electrical heater2001
Heat injection process1995
Heat injection process1995
Iron hydroxide removal method1993
Preformed surfactant-optimized aqueous alkaline flood1991
Preparing an aqueous alkaline solution for recovery of oil from a1988
Aqueous organic sulfonate surfactant systems containing phenylethersulfonate cos1986
Polyalkoxy sulfonate, CO.sub.2 and brine drive process for oil recovery1985
Staged preformed-surfactant-optimized aqueous alkaline flood1985