Lignin amine surfactant system followed by sequential polymer slugs

Patent · Tue Jul 12 04:00:00 EDT 1988

OSTI ID:6818578

De Bons, F E

A method of recovering hydrocarbons from an underground hydrocarbon formation penetrated by at least one injection well and at least one production well is described which comprises: injecting into the formation through an injection well about 0.05 to about 0.5 pore volumes of an aqueous lignin amine surfactant slug have a concentration of about 0.1% to about 6.0% active component, the lignin amine surfactant slug comprising lignin, a primary amine having about 8 to about 18 carbon atoms and a sulfonate surfactant having an equivalent weight between about 200 and about 400 in the relative concentrations of about 1% to about 20% by weight of amine, about 10% to about 80% by weight of lignin, and about 10% to about 75% by weight of sulfonate surfactant; injecting into the formation about 0.1 to about 0.5 pore volumes of an aqueous buffer slug comprising about 0.01% to about 1.0% of polyacrylamide by weight, less than about 4000 ppm TDS of salinity and less than about 200 ppm of divalent metal ions; injecting into the formation at least 0.2 pore volumes of a relatively high salinity aqueous drive fluid comprising about 0.01% to about 0.5 of polysaccharide by weight; and recovering hydrocarbons and other fluids from the formation through a production well.

• Assignee: Texaco Inc., White Plains, NY
• Patent Number(s): US 4756370
• OSTI ID: 6818578
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ADDITIVES
AMINES
AQUEOUS SOLUTIONS
CARBOHYDRATES
CHEMICAL COMPOSITION
DISPERSIONS
DISPLACEMENT FLUIDS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUELS
LIGNIN
MIXTURES
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
ORGANIC SULFUR COMPOUNDS
PETROLEUM
POLYAMIDES
POLYMERS
POLYSACCHARIDES
RECOVERY
SACCHARIDES
SALINITY
SOLUTIONS
STIMULATION
SULFONATES
SURFACTANTS
WATERFLOODING
WELL STIMULATION
WELLS