Sacrificial adsorbate for surfactants utilized in chemical flood
Sacrificial agents for petroleum recovery processes
Sand control agent and process
Secondary oil recovery process
Secondary recovery by miscible vertical drive
Secondary recovery process
Secondary recovery process
Secondary recovery process
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