Acidic high temperature stable aqueous brine fluids viscosified by basic n-heterocyclic polymers
Patent
·
OSTI ID:5880171
There is provided an aqueous brine fluid having a pH of less than about 5 and containing a high salt concentration and a basic N-heterocyclic polymer or copolymer such as polyvinyl pyridine which serves to increase the viscosity of the fluid, particularly at elevated temperatures of above about 300/sup 0/ F. These fluids are particularly useful as drilling fluids for the drilling of oil and gas wells.
- Assignee:
- Mobil Oil Corporation
- Patent Number(s):
- US 4490261
- OSTI ID:
- 5880171
- 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
BRINES
CHEMICAL COMPOSITION
COPOLYMERS
DRILLING
DRILLING FLUIDS
FLUIDS
HETEROCYCLIC COMPOUNDS
NATURAL GAS WELLS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PH VALUE
POLYMERS
WELL DRILLING
WELLS
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
BRINES
CHEMICAL COMPOSITION
COPOLYMERS
DRILLING
DRILLING FLUIDS
FLUIDS
HETEROCYCLIC COMPOUNDS
NATURAL GAS WELLS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PH VALUE
POLYMERS
WELL DRILLING
WELLS