Inventor
GIDDINGS DAVID M
US8 patents
Patents
8 patentsUS4678591AJul 7, 1987
Terpolymer composition for aqueous drilling fluids
NALCO CHEMICAL CO58 citations94
US4770795ASep 13, 1988
Calcium tolerant deflocculant for drilling fluids
NALCO CHEMICAL CO26 citations92
US4502965AMar 5, 1985
Terpolymers for use as high temperature fluid loss additive and rheology stabilizer for high pressure, high temperature oil well drilling fluids
NALCO CHEMICAL CO21 citations81
US4555558ANov 26, 1985
Terpolymers of 2-acrylamido-2-methylpropane-sulfonic acid, sodium salt (AMPS), N,N-dimethylacrylamide, and acrylonitrile
NALCO CHEMICAL CO8 citations73
US4544722AOct 1, 1985
Water-soluble terpolymers of 2-acrylamido-2-methylpropane-sulfonic acid, sodium salt (AMPS), n-vinylpyrrolidone and acrylonitrile
NALCO CHEMICAL CO15 citations73
US4502964AMar 5, 1985
Terpolymers for use as high temperature fluid loss additive and rheology stabilizer for high pressure, high temperature oil well drilling fluids
NALCO CHEMICAL CO18 citations73
US4502966AMar 5, 1985
Terpolymers for use as high temperature fluid loss additive and rheology stabilizer for high pressure, high temperature oil well drilling fluids
NALCO CHEMICAL CO15 citations73
US4544719AOct 1, 1985
Water-soluble polymers containing 2-acrylamido-2-methylpropane-sulfonic acid, sodium salt (AMPS)-acrylamide-N,N-diallylacetamide
NALCO CHEMICAL CO5 citations62