Reducing permeability of highly permeable zones in subterranean formations

Patent · Tue Aug 30 04:00:00 EDT 1988

OSTI ID:6668363

Allison, J D

A process is described for reducing the permeability of a subterranean formation traversed by a well bore which comprises: (a) introducing into the formation via the well bore an aqueous solution of a water soluble polymer selected from the group consisting of polygalactomannan gums, hydroxyalkyl ethers of polygalactomannan gums, carboxyl alkyl ethers of polygalactomannan gums, their depolymerized counterparts, polyvinyl alcohol and mixtures thereof, the polymer being in the solution in an amount of from about 1% to 10% by weight of the solution; and (b) introducing into the formation via the well bore a slowly hydrolyzable alkoxy amine ester of boric acid.

• Assignee: Conoco Inc., Ponca City, OK
• Patent Number(s): US 4766959
• OSTI ID: 6668363
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ACIDIZATION
ALCOHOLS
AMINES
AQUEOUS SOLUTIONS
BORATES
BORIC ACID
BORON COMPOUNDS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COLLOIDS
DECOMPOSITION
DEPOLYMERIZATION
DISPERSIONS
DISPLACEMENT FLUIDS
ENERGY SOURCES
ENHANCED RECOVERY
ESTERS
ETHERS
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
GELS
GUMS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INORGANIC ACIDS
MIXTURES
NATURAL GAS
NATURAL GAS WELLS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
PERMEABILITY
PETROLEUM
POLYMERS
POLYVINYLS
PVA
RECOVERY
RESERVOIR ROCK
ROCK-FLUID INTERACTIONS
SOLUTIONS
STIMULATION
WATERFLOODING
WELL STIMULATION
WELLS