Surfactant waterflooding with graded slinity drive for oil recovery

Patent · Tue Dec 20 00:00:00 EST 1983

OSTI ID:6886465

Hurd, B G

An improved recovery process is provided for fluent petroleum in a porous formation having spaced injection means and production well recovery means which includes a concentrated brine drive and surfactant carrier system. By injecting an aqueous drive medium having gradually decreasing brine concentration, surfactant transport and petroleum recovery efficiency are improved. Advantageously, an effective aqueous surfactant composition is formulated containing a water-soluble ether-linked sulfonate surfactant, a cosurfactant alcohol, and at least one cosurfactant or sacrificial sulfonate material in a concentrated brine carrier.

• Assignee: Mobil Oil Corp., New York, N.Y.
• Patent Number(s): US 4421168
• OSTI ID: 6886465
• Resource Relation: Patent File Date: Filed date 10 Nov 1980; Other Information: PAT-APPL-205354
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
DISPLACEMENT FLUIDS
CHEMICAL COMPOSITION
INJECTION WELLS
WELL SPACING
OIL WELLS
WATERFLOODING
ALCOHOLS
AQUEOUS SOLUTIONS
BRINES
ENHANCED RECOVERY
ETHERS
PRESSURE GRADIENTS
QUANTITY RATIO
SALINITY GRADIENTS
SULFONATES
SURFACTANTS
DISPERSIONS
FLUID INJECTION
FLUIDS
HYDROXY COMPOUNDS
MIXTURES
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
RECOVERY
SOLUTIONS
WELLS
020300* - Petroleum- Drilling & Production