Well treating fluids and additives therefor

Patent · Tue Jul 16 00:00:00 EDT 1991

OSTI ID:5573463

Patel, B

This patent describes a solid, dry additive for reducing the water loss and improving other properties of well treating fluids in high temperature environments. It comprises a mixture of a water soluble copolymer of N-vinyl pyrrolidone and the sodium salt of 2- acrylamido-2-methylpropane sulfonic acid and an organic compound selected from the group consisting of lignites, tannins, asphaltic materials, derivatives thereof and mixtures of such compounds, the mixture of the water soluble copolymer and organic compound being prepared by mixing a water and oil emulsion containing the copolymer with the organic compound followed by removing the oil and water from the resultant mixture.

• Assignee: Phillips Petroleum Co., Bartlesville, OK (United States)
• Patent Number(s): A; US 5032296
• Application Number: PPN: US 7-280303
• OSTI ID: 5573463
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ADDITIVES
CHEMICAL COMPOSITION
COPOLYMERS
DISPERSIONS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MIXTURES
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
PETROLEUM
POLYMERS
STIMULATION
SULFURIC ACID
TEMPERATURE RANGE
TEMPERATURE RANGE 0400-1000 K
WATER
WELL STIMULATION
WELLS