Bakken Shale
Burke, ND
Mountrail, ND
Williams, ND
Barnett Shale
Bosque, TX
Collin, TX
Comanche, TX
Cooke, TX
Dallas, TX
Denton, TX
Ellis, TX
Erath, TX
Grayson, TX
Hamilton, TX
Hill, TX
Hood, TX
Johnson, TX
McLennan, TX
Montague, TX
Palo Pinto, TX
Parker, TX
Somervell, TX
Tarrant, TX
Wise, TX
Eagle Ford Shale
Atascosa, TX
Dimmit, TX
Duval, TX
La Salle, TX
Maverick, TX
Webb, TX
Wilson, TX
Zapata, TX
East Texas
Angelina, TX
Cherokee, TX
Gregg, TX
Rusk, TX
Smith, TX
Upshur, TX
Fayetteville Shale
Conway, AR
Crawford, AR
Jackson, AR
White, AR
Haynesville Shale
De Soto, LA
Red River, LA
Sabine, LA
Harrison, TX
Panola, TX
Sabine, TX
Shelby, TX
Marcellus Shale
Allegany, MD
Garrett, MD
Allegany, NY
Chemung, NY
Chenango, NY
Cortland, NY
Delaware, NY
Otsego, NY
Schuyler, NY
Steuben, NY
Tioga, NY
Tompkins, NY
Ulster, NY
Belmont, OH
Harrison, OH
Jefferson, OH
Washington, OH
Allegheny, PA
Armstrong, PA
Cameron, PA
Centre, PA
Clearfield, PA
Clinton, PA
Columbia, PA
Elk, PA
Greene, PA
Indiana, PA
Jefferson, PA
Venango, PA
Warren, PA
Wyoming, PA
Rockingham, VA
Barbour, WV
Braxton, WV
Brooke, WV
Clay, WV
Doddridge, WV
Gilmer, WV
Hampshire, WV
Hancock, WV
Harrison, WV
Marcellus Shale (cont)
Lewis, WV
Marion, WV
Marshall, WV
Mineral, WV
Monongalia, WV
Nicholas, WV
Pocahontas, WV
Preston, WV
Randolph, WV
Taylor, WV
Tucker, WV
Upshur, WV
Webster, WV
Wetzel, WV
Wood, WV
Permian Basin
Eddy, NM
Andrews, TX
Ector, TX
Gaines, TX
Midland, TX
Texas Gulf Coast
Aransas, TX
Austin, TX
Bee, TX
Brazoria, TX
Calhoun, TX
Colorado, TX
DeWitt, TX
Fort Bend, TX
Galveston, TX
Hardin, TX
Harris, TX
Hidalgo, TX
Jackson, TX
Jasper, TX
Jefferson, TX
Kleberg, TX
Lavaca, TX
Liberty, TX
Montgomery, TX
Newton, TX
Nueces, TX
Orange, TX
Tyler, TX
Victoria, TX
Waller, TX