Stable emulsion copolymers of acrylamide and ammonium acrylate f
Stable mixture of crosslinkable components promptly activatable
Stable mud drilling fluid additive, composition and process for
Steam flooding hydrocarbon recovery composition
Steam foam surfactants enriched in alpha olefin disulfonates for
Substituted heterocyclic methane sulfonates as sacrificial agent
Substituted-ammonium humate fluid loss control agents for oil-ba
Sulfated biopolymers for use in recovering petroleum from a subt
Sulfited fatty compounds with a reduced content of free hydrogen
Sulfonate blends useful for improved oil recovery
Sulfonate for waterflooding
Sulfonate water flood additives and method of using same
Sulfonate-containing polymer/polyanionic cellulose combination f
Sulfonated alkyl glucosides and use thereof in oil recovery
Sulfonated asphalt
Sulfonated asphalt/causticized lignite blend
Sulfonated gilsonite drilling mud additive
Sulfonated phenolic material and its use in post primary oil rec
Sulfonated polymeric dispersant compositions for subterranean we
Sulfonated tributylphenol ethoxylates, their use, and a process