Related by context. Frequent words. (Click for all words.) 73 bed methane 67 shale gas 65 shale 60 oil sands 60 coal seam gas 59 Marcellus shale 59 CBM 59 natural gas 57 Piceance Basin 57 Marcellus Shale 57 horizontal drilling 56 Haynesville Shale 56 shales 56 coal seams 56 Montney 55 Fayetteville Shale 55 horizontal wells 55 drilling 55 shale deposits 55 oilsands 55 hydraulic fracturing 54 Powder River Basin 54 Appalachian Basin 54 shale formations 54 coal 53 wells 53 exploratory drilling 53 SAGD 53 hydrocarbon 53 EOR 52 Barnett Shale 52 fracking 52 coal mining 51 coal seam 51 exploration 51 mineral 51 waterflood 51 deepwater 51 wells drilled 50 Haynesville 50 acreage 50 Williston Basin 50 Bakken 50 leasehold 49 Marcellus 49 recoverable reserves 49 coal gasification 49 hydrocarbons 49 gas condensate 49 Encana 49 Gastar 49 deepwater exploration 49 bitumen 49 gas 48 oil 48 Roan Plateau 48 mining 48 Oil Sands 48 uranium mining 48 geothermal 48 oilfields 48 mmcf d 48 mineral extraction 47 coal mine 47 BOE d 47 Niobrara 47 Outer Continental Shelf 47 CNX Gas 47 Ford Shale 47 drillers 47 tcf 47 Beaufort Sea 47 deepwater Gulf 47 North Slope 47 tar sands 47 Tcf 47 basins 47 Anadarko 47 Alberta oilsands 47 directional drilling 47 carbon sequestration 46 trillion cubic feet 46 onshore 46 hydrocarbon reserves 46 methane 46 Timor Sea 46 acreages 46 outer continental shelf 46 Bohai Bay 46 EnCana 46 Bcf 46 Shale 46 oilfield 45 mineral exploration 45 exploratory wells 45 bbls 45 PTTEP 45 Talisman 45 XTO 45 subsurface 45 CNOOC