America's producing basins, mapped
Every deal you'll ever be pitched sits in one of these basins — and the rock decides more about your returns than the sponsor's spreadsheet does. Hover a basin for the short version; click through for the full analysis: geology, producing intervals, well economics, and the studies that matter.
Basin outlines are simplified for readability — see each analysis for precise extent maps. Built from EIA and USGS province boundaries.
Full basin analyses
Permian Basin
West Texas & New Mexico. Half of U.S. crude output. Stacked pay from Spraberry through Wolfcamp and Bone Spring — the deepest inventory in the world.
Read the analysis →Eagle Ford Shale
South Texas arc with oil, condensate, and dry-gas windows. Gulf Coast pricing, refrac renaissance, and the Austin Chalk overlay.
Read the analysis →Williston Basin
North Dakota & Montana. The Bakken and Three Forks benches — mature, consolidated, and still moving a million barrels a day.
Read the analysis →Appalachian Basin
Marcellus & Utica. The largest gas field in America — low breakevens, pipeline-constrained, and newly LNG-relevant.
Read the analysis →Haynesville Shale
Louisiana & East Texas. Deep, hot, high-pressure gas sitting next door to Gulf Coast LNG — the demand story of the decade.
Read the analysis →Anadarko Basin
Western Oklahoma's SCOOP & STACK. Woodford, Meramec, and Springer — liquids-rich geology with a private-operator rebound.
Read the analysis →DJ Basin
Colorado's Niobrara & Codell. Chevron's post-PDC stronghold — strong rock, four-mile laterals, and real regulatory risk.
Read the analysis →Powder River Basin
Wyoming's emerging horizontal oil play — Niobrara, Turner, and Mowry benches, big federal-land footprint, a delineation cycle behind the DJ.
Read the analysis →San Juan Basin
The legacy NM/CO gas giant under Hilcorp — shallow declines, cheap PDP, Fruitland coal seam gas, and Mancos oil upside.
Read the analysis →Uinta & Piceance
Utah's waxy crude riding rail to Gulf refiners, next to Colorado's Williams Fork tight gas. Consolidators' country.
Read the analysis →Barnett Shale
The shale that started it all — a mature Fort Worth Basin gas annuity with refrac upside and urban-drilling quirks.
Read the analysis →New to basin analysis?
The Rock test is step one of the RESERVES framework — the 8-point system this site teaches for evaluating any oil & gas deal.
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