Additive for drilling fluids

Additive for reducing fluid loss or filtration rate for aqueous

Additive for reducing gel strength in aqueous drilling fluids

Additive systems for control of fluid loss in aqueous drilling f

Agents and a process for waterproofing leathers and furs

Alkoxylated asphalts as co-surfactants in surfactant oil recover

Alkyl norbornyl ether sulfonates useful for solubilizing petrole

Alkyl sulfonates of polyvinyl alcohol as viscosifiers in saline

Altering high temperature subterranean formation permeability

Amine derivatives as corrosion inhibitors

Amine treatment of polysaccharide solution

Amino resin modified xanthan polymer gels for permeability profi

Amino resins crosslinked polymer gels for permeability profile c

Ammonium salts of polymaleic acids and use as corrosion inhibito

Ampholytic polymers for use as filtration control aids in drilli

Amphoteric water-in-oil self-inverting polymer emulsion

Amphoteric water-in-oil self-inverting polymer emulsion

Anionic copolymers for improved control of drilling fluid rheolo

Anticaking of sodium chloride and potassium chloride

Antifloc additives for sodium bromide compositions