Related by context. Frequent words. (Click for all words.) 73 coal seams 53 shale 53 horizontal drilling 53 bituminous coal 52 coal mine 52 shales 52 shale formations 51 coalbed methane 51 Marcellus shale 51 coal mining 51 wellbore 50 coalmine 50 shale deposits 50 Surat Basin 50 drilling 50 Marcellus Shale formation 50 coal 50 oxide mineralization 49 Marcellus Shale 49 dolomite 48 orebody 48 longwall 48 gas condensate 48 Bakken formation 48 coal seam gas 48 horizontal wells 48 underground workings 48 Woodford Shale 47 Hydraulic fracturing 47 fracture stimulated 47 anticline 47 shale gas 47 mineralized horizon 47 wells drilled 47 reservoir 47 stopes 47 drilled 46 mineralized zone 46 fracture stimulation 46 geologic formations 46 mine shaft 46 mine workings 46 sandstones 46 diamondiferous 46 EOG Resources Inc. 46 undrilled 46 coal mines 46 drill rig 46 stratigraphic 46 colliery 46 mineralized 46 lodes 46 sulphide mineralization 45 stope 45 footwall 45 mine 45 Coal Mine 45 longwall mining 45 methane 45 mineralization 45 orebodies 45 earth crust 45 mineable 45 CBM 45 lignite 45 Bakken Formation 44 Sandstone 44 mining 44 slurry 44 delineation drilling 44 fracing 44 CNX Gas 44 tailings dam 44 mineralized interval 44 shaft 44 Drilling 44 #Mt [001] 44 coalmines 44 drillhole 44 hydraulic fracturing 44 infill drilling 44 sedimentary rock 44 Mineralisation 44 Austin Chalk 44 Aracoma 44 coking coal 44 mined 44 lode 44 waterflood 44 exploratory drilling 43 nickel sulphide 43 hydrocarbon bearing 43 lignite coal 43 miners 43 CONSOL 43 drill 43 sandstone 43 wells 43 hydrocarbon 43 MSHA 43 vertical shaft