Addition of nonionic surfactants to water soluble block...
Addition of zwitterionic surfactant to water soluble polymer...
Addition products from ethylene oxide-propylene oxide block...
Addition to steam of surfactant in solvent for enhancing oil...
Additive for inclusion in a heavy oil reservoir undergoing...
Additive supply system for produced oil
Additive to reduce frictional pressure loss in hydrocarbon...
Additives and method for controlling clathrate hydrates in...
Additives for improving motor oil properties
Additives for inhibiting gas hydrate formation
Additives for inhibiting the formation of gas hydrates
Adducts of propargyl alcohol and their use as corrosion...
Adhesive anchor
Adjacent well electromagnetic telemetry system and method...
Adjustable and retrievable multiple point steam injection...
Adjustable angle drive connection for a down hole drilling...
Adjustable backing arrangement for pipe suspending slips
Adjustable bearing section core barrel
Adjustable bent housing
Adjustable bent housing