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Combined dispersant fluid loss control additives

Patent ·
OSTI ID:5911563
;
Water soluble polymer compositions containing polyacrylic acid and copolymer of itaconic acid and acrylamide are useful as combined dispersant and fluid loss control additives for aqueous drilling fluids, particularly fresh water, gypsum and seawater muds. An example is a polymer composition containing about 80% by weight polyacrylic acid and about 20% by weight copolymer of itaconic acid and acrylamide in its ammonium salt form.
Assignee:
IFI; EDB-86-099704
Patent Number(s):
US 4561986
OSTI ID:
5911563
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
ACRYLAMIDE
ACRYLIC ACID
ADDITIVES
AMIDES
AQUEOUS SOLUTIONS
CARBOXYLIC ACIDS
CHEMICAL COMPOSITION
COPOLYMERS
DICARBOXYLIC ACIDS
DISPERSIONS
DRILLING FLUIDS
FLUIDS
ITACONIC ACID
MIXTURES
MONOCARBOXYLIC ACIDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
POLYMERS
QUANTITY RATIO
SOLUBILITY
SOLUTIONS
SURFACTANTS