Emulsion catalyst for hydrogenation processes
Enhanced oil recovery from western United States type oil shale
Enhanced recovery of hydrocarbonaceous fluids from oil shale
Enhanced recovery of hydrocarbonaceous fluids from the oil shale
Enhanced removal of nitrogen and sulfur from oil-shale
Extra light hydrocarbon liquids
Extraction and upgrading of fossil fuels using fused caustic and
Extraction of oil shales and tar sands
Extraction of oil using amides
Extraction of tar sands or oil shale with organic sulfoxides or
Extraction process