Surfactant waterflooding enhanced oil recovery process

Patent · Tue Jul 17 04:00:00 EDT 1984

OSTI ID:6385254

Schievelbein, V H

Disclosed is a surfactant waterflooding enhanced oil recovery process and surfactant fluid suitable for use in an enhanced oil recovery process which accomplishes an increase in the amount of oil recovered over prior art methods. The surfactant fluid contains an alkylpolyalkoxy sulfate or alkylarylpolyalkoxy sulfate, or an alkylpolyalkoxyalkylene sulfonate or alkylarylpolyalkoxyalkylene sulfonate, either alone or in combination with an organic sulfonate anionic surfactant, such as petroleum sulfonate. The optimum average degree of ethoxylation of the alkoxy sulfate or alkoxy sulfonate surfactant is identified, and the surfactant fluid is formulated with a mixture of ethoxylated and sulfated or ethoxylated and sulfonated surfactants, having a broad even range of degree of ethoxylation.

• Assignee: Texaco Inc.
• Patent Number(s): US 4460481
• OSTI ID: 6385254
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ADDITIVES
CHEMICAL REACTIONS
DISPERSIONS
ENHANCED RECOVERY
ESTERS
FLUID INJECTION
MIXTURES
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PETROLEUM SULFONATES
RECOVERY
SALINITY
STIMULATION
SULFONATES
SULFONATION
SULFONIC ACID ESTERS
SURFACE PROPERTIES
SURFACE TENSION
SURFACTANTS
WATERFLOODING
WELL STIMULATION
WELLS