Non-retarding fluid loss additives for well cementing compositions
Patent
·
OSTI ID:5248108
A method is described of cementing a well bore, comprising the steps of: mixing together a hydraulic cement, water in an amount to produce a pumpable slurry, and a fluid loss additive which comprises a copolymer of a first monomer of dimethyldiallyl ammonium chloride and a second anionic monomer having a functionality selected from the group consisting of carboxlyate and sulfonate, the monomer ratio of the nonionic water soluble monomer to the anionic monomer being in the range from about 85:15 to 95:5, and the copolymer having a molecular weight in the range from about 200,000 to 400,000; pumping the cement slurry to the desired location in the well bore; and allowing the cement slurry to harden to a solid mass.
- Assignee:
- Hughes Tool Co., Houston, TX
- Patent Number(s):
- US 4610306
- OSTI ID:
- 5248108
- 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
AMMONIUM CHLORIDES
AMMONIUM COMPOUNDS
AMMONIUM HALIDES
BUILDING MATERIALS
CEMENTING
CEMENTS
CHEMICAL COMPOSITION
CHLORIDES
CHLORINE COMPOUNDS
COPOLYMERS
DISPERSIONS
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
MATERIALS
MIXING
MIXTURES
MONOMERS
NATURAL GAS WELLS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
POLYMERS
QUANTITY RATIO
SLURRIES
SULFONATES
SUSPENSIONS
WATER
WELLS
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
ADDITIVES
AMMONIUM CHLORIDES
AMMONIUM COMPOUNDS
AMMONIUM HALIDES
BUILDING MATERIALS
CEMENTING
CEMENTS
CHEMICAL COMPOSITION
CHLORIDES
CHLORINE COMPOUNDS
COPOLYMERS
DISPERSIONS
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
MATERIALS
MIXING
MIXTURES
MONOMERS
NATURAL GAS WELLS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
POLYMERS
QUANTITY RATIO
SLURRIES
SULFONATES
SUSPENSIONS
WATER
WELLS