Related by context. Frequent words. (Click for all words.) 55 Rocky Mountains 53 Permian basin 51 Bighorn Basin 50 Bakken shale 50 Midcontinent 50 Fayetteville shale 49 Piceance 49 Uinta Basin 49 Deep Bossier 48 Haynesville shale 48 Canada Sedimentary Basin 48 Monument Butte 48 flyways 48 NGL volumes 47 wintering grounds 47 Appalachian basin 47 migrating waterfowl 47 Trans Pecos 47 western Corn Belt 47 Bakken Shale 47 Piceance Basin 47 Barnett shale 47 Pinedale Anticline 47 Mule deer 47 intermountain 46 Paradox Basin 46 Dakotas 46 deciduous forests 46 Niobrara Shale 46 upper midwest 46 Woodford Shale 46 Arkoma Basin 46 hardwood forests 46 northcentral 46 Oooguruk 46 natural gas 46 cattle feedlots 46 Horizontal drilling 45 Lower Shaunavon 45 prairies 45 Anadarko Basin 45 Utica shale 45 Atlantic Flyway 45 Soil moisture 45 Snowpack 45 Cutbank Ridge 45 Denver Julesburg Basin 45 mid latitudes 45 Milder weather 45 temperate forests 45 Yukon Flats 45 Panhandle 45 undeveloped acreage 45 Kuparuk 45 Montney formation 44 caribou herds 44 Chattanooga Shale 44 Powder River Basin 44 Great Plains 44 Northeast Mid Atlantic 44 Culex tarsalis 44 Permian Basin 44 Central Flyway 44 Sandhill cranes 44 NGL pipeline 44 Athabasca basin 44 Midwest 44 Sea otters 44 huntable 44 bobwhite 44 Mid Continent 44 poleward 44 Wyoming Powder River 44 Williston Basin 44 Bbl d 44 salt domes 44 Wamsutter 44 feedyards 44 geographic 43 Sanish field 43 Book Cliffs 43 Mountrail 43 bcfd 43 freshwater marshes 43 Migrating birds 43 sedimentary basin 43 Odessa Midland 43 Mutineer Exeter 43 bison herds 43 depositional 43 southcentral 43 sagebrush habitat 43 Prudhoe Bay 43 North Slope 43 northcentral Montana 43 Hebgen Lake 43 Barnett Shale 43 Sanish 43 Upper Midwest 43 southern Appalachians 43 pronghorns