C-branched zwitterionic surfactants and enhanced oil recovery me

C-branched zwitterionic surfactants and enhanced oil recovery me

Calcium tolerant deflocculant for drilling fluids

Calcium-free clear high density fluids

Calixarenes

Carbamates of beta-hydroxyethylsulfoxides

Carboxymethyl guar based drilling fluids

Carboxymethyl hydroxyethyl cellulose as a thickener for drilling

Carboxymethylhydroxyethyl cellulose in drilling, workover and co

Cationic acrylamide emulsion polymer brine thickeners

Cationic formulations for oiling leathers and skins

Caustic flooding with stabilized water for enhanced oil recovery

Cellulose ether-polyacrylamide aqueous gels

Certain dithiocarbamates and method of use for reducing asphalte

Characterizing hydrocarbon sulfonates and utilization of hydroca

Characterizing petroleum sulfonates by phase behavior

Chemical method of ferric ion removal from acid solutions

Chemical process for backsurging fluid through well casing perfo

Chemical wash with fluid loss control

Chemically cleaning drilling/completion/packer brines