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Method and compositions for acidizing and fracturing wells

Patent ·
OSTI ID:6395878
Gelled-acid compositions suitable for matrix-acidizing or fracture-acidizing of subterranean formations and methods of using the composition in these operations are provided wherein the compositions comprise water, water-dispersible acrylamide-derived polymer, an acid and an aldehyde precursor which hydrolyzes in aqueous acid media to produce aldehydes which in turn react with the polymer and gels the resulting mixture.
Assignee:
Phillips Petroleum Company
Patent Number(s):
US 4476033
OSTI ID:
6395878
Country of Publication:
United States
Language:
English

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Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
ACID HYDROLYSIS
ACIDIZATION
ACRYLAMIDE
ALDEHYDES
AMIDES
AQUEOUS SOLUTIONS
CHEMICAL COMPOSITION
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COLLOIDS
COMMINUTION
DECOMPOSITION
DISPERSIONS
ENHANCED RECOVERY
FLUIDS
FRACTURING
FRACTURING FLUIDS
GELS
HYDRAULIC FRACTURING
HYDROLYSIS
LYSIS
MIXTURES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
POLYMERS
RECOVERY
SOLUTIONS
SOLVOLYSIS
STIMULATION
SYNTHESIS
WELL STIMULATION
WELLS