Method of increasing the rate of hydration of activated hydroxyethyl cellulose compositions

Patent · Tue Aug 11 04:00:00 EDT 1987

OSTI ID:6106405

House, R F; Hoover, L D

This patent describes a method of producing a well servicing fluid wherein a first solution containing zing bromide is mixed with at least one second solution having dissolved therein a salt selected from the group consisting of calcium chloride, calcium bromide, and mixtures thereof, the improvement which comprises the following steps in the order indicated: (a) admixing a hydroxyethyl cellulose composition with the second solution to produce a viscosified solution and (b) thereafter admixing the viscosified solution with the first solution containing zinc bromide and having a density of at least 17.0 ppg to give the desired well servicing fluid having a density in the range from about 14.2 ppg to about 18.0 ppg, the hydroxyethyl cellulose being activated prior to admixture so as to substantially hydrate or solubilize in the second solution at ambient temperatures.

• Assignee: NL Industries, Inc., New York, NY
• Patent Number(s): US 4686051
• OSTI ID: 6106405
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
ALKALINE EARTH METAL COMPOUNDS
AMBIENT TEMPERATURE
BROMIDES
BROMINE COMPOUNDS
CALCIUM BROMIDES
CALCIUM CHLORIDES
CALCIUM COMPOUNDS
CALCIUM HALIDES
CARBOHYDRATES
CELLULOSE
CHEMICAL PREPARATION
CHLORIDES
CHLORINE COMPOUNDS
DENSITY
DISPERSIONS
DISSOLUTION
FLUIDS
HALIDES
HALOGEN COMPOUNDS
HYDRATION
MIXING
MIXTURES
NATURAL GAS WELLS
OIL WELLS
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
POLYSACCHARIDES
SACCHARIDES
SOLVATION
SYNTHESIS
VISCOSITY
WELL SERVICING
WELLS
WORKING FLUIDS
ZINC BROMIDES
ZINC COMPOUNDS
ZINC HALIDES