Oil recovery process using a polymer gel

Patent · Tue Oct 22 00:00:00 EDT 1985

OSTI ID:5755777

Norton, C J; Falk, D O; Hill, A D

A reducing agent is added to an aqueous medium containing a mixture of undried partially hydrolyzed polyacrylamide and an oxidizing agent. The reducing agent and oxidizing agent act as a redox catalyst system to cross link the polymer and form a polymer gel. Gelation time is controlled by maintaining the components of the gel-forming mixture at predetermined concentrations, reaction ratios and pH. The gel-forming mixture is applied to a porous matrix such as a subterranean hydrocarbon-bearing formation where the mixture gels in situ at a controlled rate to reduce the permeability of the porous matrix.

• Assignee: Marathon Oil Company
• Patent Number(s): US 4548272
• OSTI ID: 5755777
• Resource Relation: Patent File Date: Filed date 22 Aug 1983; Other Information: PAT-APPL-525189
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
DISPLACEMENT FLUIDS
GELATION
OXIDIZERS
REDUCING AGENTS
OIL WELLS
WATERFLOODING
RESERVOIR ROCK
PLUGGING
AQUEOUS SOLUTIONS
CROSS-LINKING
ENHANCED RECOVERY
GELS
HYDROLYSIS
PERMEABILITY
POLYACRYLATES
POLYAMIDES
REDOX POTENTIAL
CHEMICAL REACTIONS
COLLOIDS
DECOMPOSITION
DISPERSIONS
ESTERS
FLUID INJECTION
FLUIDS
LYSIS
MIXTURES
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYMERIZATION
POLYMERS
POLYVINYLS
RECOVERY
SOLUTIONS
SOLVOLYSIS
WELLS
020300* - Petroleum- Drilling & Production