Related by context. Frequent words. (Click for all words.) 65 coalbed methane 63 frac sand 62 coal seams 60 Paradox Basin 58 shale 58 coal seam 57 Horizontal drilling 57 wellbores 57 bed methane 56 sandstone reservoirs 55 Coal seam 55 reinjection 54 depositional 53 drilling 53 CO2 sequestration 53 contaminating groundwater 53 Utica shale 53 evaporation ponds 53 CBM wells 53 Woodford Shale 53 minable 53 coalbed methane CBM 53 shale formations 52 tailing ponds 52 Vermillion Basin 52 hydrocarbons 52 hydrocarbon 52 Coal Bed Methane 52 subsurface 52 natural gas 51 Anticline 51 aquifer recharge 51 shale deposits 51 shales 51 Bakken shale 51 desorption 51 Fayetteville shale 51 Wolfcamp 51 fracking fluids 51 Georgina Basin 51 reservoir sands 51 groundwater 51 Hydraulic fracturing 51 Niobrara Shale 51 Coal Seam Gas 51 oil sands 51 shale gas 50 coal 50 Haynesville shale 50 aquifers 50 wells 50 Tailings 50 hydraulic fracturing 50 silts 50 lignite coal 50 Bakken Formation 50 dewater 50 fracking fluid 50 fracing 50 Appalachian basin 50 productivities 50 Piceance 50 Lower Tertiary 50 underground aquifer 50 methane hydrate 50 Marcellus shale 50 Marcellus wells 50 coal slurry 49 Aquifer 49 underground aquifers 49 aquifer 49 Dewatering 49 eU#O# 49 frac fluid 49 directional drilling 49 carbon dioxide sequestration 49 fracking 49 reservoir 49 basins 49 Jolly Ranch 49 Uinta Basin 49 injection wells 49 mill tailings 48 Marcellus Shale formation 48 SAGD 48 alluvial deposits 48 unconventional shale 48 wellfield 48 exploratory drilling 48 Chesapeake Appalachia 48 flowback 48 Arkoma Basin 48 drilling fluids 48 tailings 48 condensate 48 geologic formations 48 Coalbed Methane 48 wellbore 48 Albany Shale 48 sedimentary basin 48 CBM