Process for secondary recovery

Patent · Tue Aug 10 00:00:00 EDT 1982

OSTI ID:6693230

Hunter, W D

Hydrocarbons are recovered from a subterranean hydrocarbonbearing formation penetrated by an injection well and a production well by displacing hydrocarbons toward the production well using a drive fluid such as water thickened with a copolymer of acrylamide and vinyl sulfonic acid or salts thereof or with a copolymer of acrylamide and styrene sulfonic acid or salts thereof as well as these same copolymers alkoxylated with an alkylene oxide. Optionally, the drive fluid can be saturated with carbon dioxide, nitrogen, natural gas or mixtures of these gases.

• Assignee: Texaco Development Corp
• Patent Number(s): US 4343712
• OSTI ID: 6693230
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ACRYLAMIDE
ALKALI METAL COMPOUNDS
AMIDES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON DIOXIDE INJECTION
CARBON OXIDES
CHALCOGENIDES
ELEMENTS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDROGEN COMPOUNDS
HYDROXIDES
MICROEMULSION FLOODING
MISCIBLE-PHASE DISPLACEMENT
NATURAL GAS
NITROGEN
NONMETALS
OIL WELLS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
POTASSIUM HYDROXIDES
RECOVERY
SODIUM COMPOUNDS
SODIUM HYDROXIDES
SULFONIC ACIDS
SURFACTANTS
WELLS