Related by context. Frequent words. (Click for all words.) 65 hydro fracking 63 fraccing 62 hydraulic fracturing 61 fracking 60 Hydraulic fracturing 60 Fracking 57 extraction 57 fracking fluid 56 fracturing fluids 55 Tar sands 55 fracing 55 hydrofracking 54 Horizontal drilling 53 frack 52 Coal gasification 52 horizontal drilling 52 shale 52 Carbon sequestration 52 CO2 sequestration 51 fracking fluids 50 drillers 50 Reverse osmosis 50 reinjection 49 shale gas 49 bed methane 49 Marcellus shale drilling 49 drilling 48 FRAC Act 48 unconventional shale 48 kerogen 48 gravity drainage 48 coalbed methane 48 Utica shale 47 THAI TM 47 coalbed methane wells 47 subsurface 47 frac fluid 47 tar sands 47 Marcellus shale formation 47 Coal seam 47 frac sand 46 Shale Gas 46 directional drilling 46 Paradox Basin 46 carbon dioxide sequestration 46 methane hydrate 46 reservoir characterization 46 saltwater disposal 46 natural gas 45 geosequestration 45 contaminate drinking 45 MtBE 45 coalbed methane CBM 45 sequester carbon dioxide 45 Barnett Shale formation 45 contaminate groundwater 45 oil sands 45 Outer Continental Shelf OCS 45 tailing ponds 45 flowback 45 Marcellus Shale drilling 45 desalting 45 BTEX 45 shale deposits 44 fracking chemicals 44 petroleum distillates 44 contaminating groundwater 44 polluting groundwater 44 methane hydrates 44 gravity drainage SAGD 44 naturally occurring mineral 44 ocean fertilization 44 bioremediation 44 groundwater remediation 44 underground coal gasification 44 oil 44 prospection 44 Niobrara Shale 44 Integrated Gasification Combined Cycle 43 sequestration CCS 43 Marcellus Shale 43 Vermillion Basin 43 diatomite 43 extractable 43 shale formations 43 nonrenewable resource 43 environmentally unsound 43 Marcellus shale 43 Marcellus Shale formation 43 coal gasification 43 fracs 43 chemical additives 43 fluorocarbons 43 bed methane CBM 43 carbon sequestration 43 thermo chemical 42 combustible gases 42 environmentally destructive 42 EOR 42 Athabasca oilsands 42 Mountaintop removal