Related by context. Frequent words. (Click for all words.) 55 oilsand 54 Tar sands 54 Coalbed methane 52 Erik Molvar 52 Coal gasification 52 fracturing fluids 51 nonrenewable resources 51 CO2 sequestration 51 geologic sequestration 51 tar sands 50 nonrenewable resource 50 liquefied coal 50 Outer Continental Shelf OCS 49 carbon sequestration 49 sequester carbon dioxide 49 Severance Tax 48 Casey Lefkowitz 48 geothermal biomass 48 sequestration CCS 48 liquids CTL 48 Alberta tar sands 48 coalbed methane wells 48 rank coals 48 Carbon sequestration 47 hydrocarbon reservoirs 47 Microalgae 47 gaseous fuels 47 bitumen extraction 47 Oil Recovery EOR 47 exhaustible 47 biomass geothermal 47 brackish groundwater 47 oil 47 saline aquifers 47 synfuels 47 shale deposits 46 renewable feedstocks 46 FGD gypsum 46 Biodiversity Conservation Alliance 46 polluting waterways 46 fossil fuel 46 hydro carbons 46 IGCC plants 46 aquifer recharge 46 Valle Vidal 46 Gene Karpinski 46 Ultra Low Sulfur Diesel 46 Tar Sands 46 Aquifers 46 fossil fuels 46 ecologically sensitive areas 46 hydrocarbon liquids 46 reinjection 46 Bakken shale formation 46 biodiesels 46 unconventional reservoirs 45 Sequestration 45 depletable 45 fracking chemicals 45 Reverse osmosis 45 carbon dioxide sequestration 45 biomass combustion 45 Venezuela Orinoco 45 gasifying 45 deplete oxygen 45 oil sands 45 environmentally beneficial 45 Biobased 45 nonpetroleum 45 pollution abatement 45 Teshekpuk Lake 45 Fischer Tropsch process 45 Carbon Sequestration 45 sulfur nitrogen 45 Molvar 45 miscible 45 shale 45 nonfood crops 45 Oil Spills 45 biofuel feedstocks 44 EROI 44 Wildlife Federation 44 coalbed methane 44 bed methane 44 cesium formate drilling 44 nutrient runoff 44 Controlled burns 44 smokestack emissions 44 sage grouse populations 44 NGLs refined products 44 algae biofuels 44 pollute waterways 44 potent greenhouse gas 44 sugar cane bagasse 44 algal biomass 44 perfluorocarbons 44 Canadian sedimentary basin 44 EROEI 44 palm cultivation 44 phosphorus pollution 44 technically recoverable