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Microbiocidal anionic sequesterants with polyvalent metal cations for permeability correction process

Patent ·
OSTI ID:5755881
;
A water permeability correction process, and composition therefor, to improve the sweep efficiency of water-flooding which involves the sequential injection of an optical aqueous preflush slug to adjust connate water salinity, an aqueous sequestered polyvalent metal cation, such as chromium, wherein the sequestering anion is bactericidal, such as propionate, a gelable polymeric viscosifier, such as polyacrylamide, and preferably, an aqueous drive fluid.
Assignee:
Phillips Petroleum Company
Patent Number(s):
US 4552217
OSTI ID:
5755881
Country of Publication:
United States
Language:
English

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Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ADDITIVES
ANIONS
CARBOXYLIC ACIDS
CATIONS
CHARGED PARTICLES
CHEMICAL COMPOSITION
CHROMIUM
DISPLACEMENT FLUIDS
ELEMENTS
ENHANCED RECOVERY
ESTERS
FLUID INJECTION
FLUIDS
GELATION
IONS
METALS
MONOCARBOXYLIC ACIDS
OIL WELLS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PERMEABILITY
POLYACRYLATES
POLYAMIDES
POLYMERS
POLYVINYLS
PROPIONIC ACID
RECOVERY
RESERVOIR ROCK
ROCK-FLUID INTERACTIONS
SALINITY
SWEEP EFFICIENCY
TRANSITION ELEMENTS
VALENCE
WATERFLOODING
WELLS