North Dakota:
- Bakken Shale
- Three Forks
- Williston Basin
Montana:
Wyoming:
- Powder River Basin
- Green River Basin
- Wind River Basin
- Minnelusa
Colorado:
- Niobrara
- Picance Basin
- Wattenburg
- La Plata
- Mancios Shale
- Weld County - Greeley
- San Juan Basin
Oklahoma:
- Cleveland
- Cana Woodford
- Woodford Shale
- Mississippi Lime
- Atoka
- Granite Wash
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Texas:
- Barnett Shale
- Eagle Ford Shale
- Austin Chalk
- Permian Basin
- Woflcamp, Sprayberry, Wolfberry
- Bossier
- Granite Wash
New Mexico:
- San Juan Basin
- Rio Arriba
- Mancos Shale
- Coalbed Methane
Midwest/Appalacia:
- Illinois Basin
- Marcellus Shale
- Utica Shale
- Ohio
- West Virginia
- Pennsylvania
West Coast:
- California
- Kern County
- LA Basin
- San Joaquin Basin
- Nevada
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