Treating fines containing earthen formations

Patent · Tue Oct 29 00:00:00 EST 1985

OSTI ID:5945144

Watkins, D R; Kalfayan, L J; Knight, R K; Young, D C

Method for treating earthen formations which contain water-sensitive, finely divided particulate matter wherein there is injected into the formation steam or a mixture of steam and hot water containing an effective fines-stabilizing amount of a compound containing ammoniacal nitrogen selected from the group consisting of ammonium hydroxide, an ammonium salt of an inorganic acid, an ammonium salt of a carboxylic acid, ammonium cyanate, derivatives of ammonium cyanate, ammonium thiocyanate, and a water-soluble ammonia or ammonium ion precursor selected from the group consisting of amides of carbamic acid and thiocarbamic acid, derivatives of such amides, tertiary carboxylic acid amides and their substituted and akylated derivatives. Preferred additives include ammonium carbonate and urea. If the formation is a subsurface oil-containing formation, the treatment can be part of a method for enhanced oil recovery.

• Assignee: Union Oil Company of California
• Patent Number(s): US 4549609
• OSTI ID: 5945144
• Resource Relation: Patent File Date: Filed date 15 Aug 1984; Other Information: PAT-APPL-641360
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
DISPLACEMENT FLUIDS
CHEMICAL COMPOSITION
OIL WELLS
PARTICULATES
STEAM INJECTION
WATERFLOODING
AMIDES
AMMONIUM CARBONATES
AMMONIUM CHLORIDES
AMMONIUM HYDROXIDES
CARBOXYLIC ACIDS
CYANATES
HOT WATER
INORGANIC ACIDS
RESERVOIR ROCK
SOLVENT PROPERTIES
STABILIZATION
THERMAL RECOVERY
UREA
AMMONIUM COMPOUNDS
AMMONIUM HALIDES
CARBON COMPOUNDS
CARBONATES
CARBONIC ACID DERIVATIVES
CHLORIDES
CHLORINE COMPOUNDS
ENHANCED RECOVERY
FLUID INJECTION
FLUIDS
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
HYDROXIDES
NITROGEN COMPOUNDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PARTICLES
RECOVERY
WATER
WELLS
020300* - Petroleum- Drilling & Production