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Viscous heavy brines

Patent ·
OSTI ID:6385191
;

Hydroxyethyl cellulose and a sequestrant are added to a heavy brine containing one or more salts selected from calcium chloride, calcium bromide, and zinc bromide to increase the viscosity of the brine. Preferably the brine contains zinc bromide, has a density in the range from about 14.2-19.2 pounds per gallon, and the sequestrant is a polyphosphonic acid or water soluble salt thereof.

Assignee:
NL Industries Inc.
Patent Number(s):
US 4459214
OSTI ID:
6385191
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
ADDITIVES
ALKALINE EARTH METAL COMPOUNDS
BRINES
BROMIDES
BROMINE COMPOUNDS
CALCIUM BROMIDES
CALCIUM CHLORIDES
CALCIUM COMPOUNDS
CALCIUM HALIDES
CARBOHYDRATES
CELLULOSE
CHLORIDES
CHLORINE COMPOUNDS
DENSITY
DRILLING FLUIDS
FLUIDS
HALIDES
HALOGEN COMPOUNDS
NATURAL GAS WELLS
OIL WELLS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
PHOSPHONIC ACIDS
PHYSICAL PROPERTIES
POLYSACCHARIDES
SACCHARIDES
SALTS
SOLUBILITY
VISCOSITY
WELL COMPLETION
WELLS
ZINC BROMIDES
ZINC COMPOUNDS
ZINC HALIDES