Related by context. Frequent words. (Click for all words.) 72 Marcellus Shale 56 shale gas 55 Barnett Shale 55 shale 54 horizontal drilling 52 Bakken 51 Newfield 49 hydraulic fracturing 49 Southern Tier 49 Permian Basin 48 fracking 48 horizontal wells 47 drillers 47 Appalachia 47 Tioga 47 Anadarko 46 drilling 46 natural gas 45 Utica 45 EOG 45 Chesapeake Energy 44 Fayette 44 hydrocarbon 43 Ithaca 43 Lackawanna 43 CBM 43 coal seam gas 43 wells drilled 43 Bossier 42 Herkimer 42 XTO 42 Lycoming 42 Old Forge 42 wells 42 bed methane 42 oil sands 41 Brookville 41 Olean 41 midstream 41 Catskill 41 Chesapeake 41 Wyoming 41 Uniontown 41 Elk 40 Scranton 40 Meadville 40 Clearfield 40 Genesee 40 Otsego 40 Johnstown 40 Luzerne 40 Aliquippa 40 EnCana 40 Allegany 40 Monessen 40 Seneca 40 Comstock 40 Kittanning 40 Hornell 39 Wilkes Barre 39 Luzerne County 39 Lewisburg 39 oilsands 39 Towanda 39 Permian 39 Onondaga 39 Chenango 39 Pennsylvania 39 West Virginia 39 Blairsville 38 Waverly 38 Talisman 38 deepwater 38 Drilling 38 3D seismic 38 Hopewell 38 Erie 38 Wellsville 38 northeastern Pennsylvania 38 Fayette County 38 Tullow 38 Consol 38 Bcf 38 Powder River Basin 38 tar sands 38 Horseheads 38 Schenectady 38 North Slope 38 exploration 38 Goshen 38 upstate 37 Vestal 37 Harrisburg 37 Westmoreland 37 Steuben County 37 Susquehanna 37 gas 37 Owego 37 Souderton 37 acreage 37 Mohawk Valley