Compositions for acidizing subterranean formations
Patent
·
OSTI ID:5538680
Gelled acidic compositions suitable for either matrix-acidizing or fracture-acidizing of subterranean formations, and methods of using said compositions in acidizing operations, are provided. Said compositions comprise water, a water-dispersible polymer of acrylamide, an acid, and an aldehyde capable of causing gelation of an aqueous dispersion of said polymer, said acid, and said aldehyde. Preferably a mixture of aldehydes is used. However, either a mixture of aldehydes or a single aldehyde can be used with certain polymers, and in certain methods comprising particular combinations of steps.
- Assignee:
- Phillips Petroleum Co
- Patent Number(s):
- US 4191657
- OSTI ID:
- 5538680
- 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
ACIDIZATION
ACRYLAMIDE
ALDEHYDES
AMIDES
COLLOIDS
DISPERSIONS
ENHANCED RECOVERY
GELS
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
INORGANIC ACIDS
NATURAL GAS WELLS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
POLYMERS
RECOVERY
WELLS
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
ACIDIZATION
ACRYLAMIDE
ALDEHYDES
AMIDES
COLLOIDS
DISPERSIONS
ENHANCED RECOVERY
GELS
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
INORGANIC ACIDS
NATURAL GAS WELLS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
POLYMERS
RECOVERY
WELLS