Method and composition for acidizing subterranean formations
Patent
·
OSTI ID:6604550
Gelled acidic compositions are described which are suitable for either matrix acidizing or fracture-acidizing of subterranean formations. Methods of using the compositions in acidizing operations are described. The compositions consist of water, a water-dispersible polymer of acrylamide, an acid, and a flavotannin gelling agent. The compositions also may employ a gelation promoter, e.g., sodium dichromate or potassium dichromate. The compositions cause little or no residue in the formation. (39 claims)
- Assignee:
- Phillips Petroleum Co.
- Patent Number(s):
- US 4055502
- OSTI ID:
- 6604550
- 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
ADDITIVES
AMIDES
ENHANCED RECOVERY
GEOLOGIC FORMATIONS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
RECOVERY
STIMULATION
WELL STIMULATION
WELLS
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
ACIDIZATION
ACRYLAMIDE
ADDITIVES
AMIDES
ENHANCED RECOVERY
GEOLOGIC FORMATIONS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
RECOVERY
STIMULATION
WELL STIMULATION
WELLS