Secondary recovery process utilizing an acrylamido alkanesulfoni
Secondary recovery process utilizing water saturated with gas
Selected well completion for improving vertical conformance of s
Selective electromagnetic production tool
Selective electromagnetic production tool
Selective gel system for permeability profile control
Selective gelation polymer for profile control in CO.sub.2 flood
Selective permeability reduction of oil-free zones of subterrane
Selective placement of a permeability-reducing material to inhib
Selective plugging of formations with foam
Selectively controlling fluid flow through the higher permeabili
Selectively controlling the flow of fluids through subterranean
Sequential fluid injection process for oil recovery from a gas c
Simultaneous microemulsion-aqueous phase flooding process
Simultaneous water and gas injection into earth formations
Slow acidizing of geological formations
Soda-anthraquinone lignin sacrificial agents in oil recovery
Sodium hydroxide treatment of field water in a biopolymer comple
Sodium hydroxide treatment of field water in a biopolymer comple
Soil vapor extraction system