Related by context. Frequent words. (Click for all words.) 49 Marcellus shale 49 Bakken Formation 47 economically recoverable 47 shale 46 Marcellus wells 46 methane hydrates 46 shale deposits 46 shale formations 45 gas hydrates 45 coal seams 45 Bakken formation 44 methane 44 undeveloped acreage 44 sedimentary basins 44 shales 44 condensates 43 Marcellus Shale 43 trillion cubic feet 43 Barnett Shale 43 geological formations 42 recoverable 42 coal seam 42 Marcellus Shale formation 42 Rulison 42 Marcellus 42 coalbed methane 42 Utica Shale 41 geology 41 hydrocarbon 41 fracking fluid 41 methane gas 41 undrilled 41 Tcf 41 shale gas 41 CNX Gas 40 tcf 40 recoverable reserves 40 Barnett shale 40 drillings 40 Ghawar 40 gas condensate 40 hydrocarbons 40 crustal 40 borings 39 Brozena 39 drillers 39 coalbed methane CBM 39 downdip 39 Albany Shale 39 wells drilled 39 sedimentary rock 39 acre spacing 39 frac stages 39 Appalachian Basin 39 extractable 39 Geochemistry 39 earth crust 39 unconventional shale 39 wellbore 39 geological geophysical 39 hydrogeology 39 geological sciences 38 mineable reserves 38 natural gas 38 horizontal wells 38 aquifers 38 Dziak 38 sedimentary basin 38 glacial melt 38 wells 38 QEP Resources 38 subsurface 38 Shale 38 fracing 38 underground aquifers 38 condensate 38 tectonics 38 horizontal drilling 38 geologists 38 USGS 38 MegaWest 38 anthracite coal 38 Earth crust 38 Timan Pechora 38 Colaprete 38 unrisked 38 Orinoco Belt 38 placer gold 38 Haynesville Shale 38 wireline logs 38 Petrosearch 38 Proved Reserves 38 3P reserves 38 Woodford Shale 37 Bohai Bay 37 Yergin 37 Shales 37 producible 37 horizontal lateral 37 sulfide mineralization 37 kimberlite pipes