Method for acidizing subterranean formations. [fracture-acidization]

Patent · Tue Jan 17 04:00:00 EST 1978

OSTI ID:5203809

Clampitt, R L; Hessert, J E

Gelled acidic compositions suitable for either matrix acidizing or fracture-acidizing of subterranean formations, and methods of using said compositions, are provided. Said compositions comprise water, a water-dispersible polymer of acrylamide, an acid, a water soluble compound of a polyvalent metal wherein the metal can be reduced to a lower polyvalent valence state and cause gelation of the water containing said polymer and said acid, and reducing agent capable of reducing said metal and causing said gelation.

• Assignee: Phillips Petroleum Co.
• Patent Number(s): US 4068719
• OSTI ID: 5203809
• Country of Publication: United States
• Language: English

Related Subjects

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Plowshare-- (-1989)
ACIDIZATION
ACRYLAMIDE
AMIDES
CHEMICAL REACTIONS
CHROMATES
CHROMIUM COMPOUNDS
COLLOIDS
DISPERSIONS
ENHANCED RECOVERY
FRACTURING
GELATION
GELS
GEOLOGIC DEPOSITS
HYDRAULIC FRACTURING
HYDROGEN COMPOUNDS
NATURAL GAS DEPOSITS
NATURAL GAS WELLS
OIL WELLS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PETROLEUM DEPOSITS
POLYMERS
REDUCING AGENTS
REDUCTION
RESERVES
TRANSITION ELEMENT COMPOUNDS
WATER
WELLS