Woodford
Shale

The Woodford Shale is a Late Devonian to Early Mississippian black shale that serves as both a source rock and a reservoir across much of Oklahoma. In the deep Anadarko Basin of western Oklahoma, it is the foundational horizontal target of the SCOOP play and a deeper companion to the STACK, developed across Grady, Kingfisher, and Canadian counties among others. It is one of the most-named formations on Oklahoma mineral owners’ wells, which is why understanding it matters when you are trying to read what you have.

Therocks beneath your minerals.

The Woodford was deposited in a deep, oxygen-poor marine setting, which preserved the organic material that later generated oil and gas. That same organic richness makes it both the kitchen that charged many shallower Oklahoma reservoirs and a productive reservoir in its own right once horizontal drilling and modern completions reached it.

Across the Anadarko Basin the Woodford deepens toward the basin axis, commonly falling between roughly 11,000 and 14,500 feet in the SCOOP fairway and shallower on the basin margins. Its thickness and thermal maturity vary across the basin, which is part of why the same formation yields oil and condensate in some areas and a higher proportion of natural gas in others.

Because the Woodford sits beneath younger Mississippian and Pennsylvanian rocks, it is frequently the lowest target in a stack that also includes the Sycamore, the Springer, and the Meramec. Local geology, depth, and maturity drive which of those layers an operator develops first on any given tract.

Where theproduction lives.

The Woodford anchored the SCOOP play when horizontal development moved into the deep Anadarko Basin, and it remains a core part of the inventory there. Continental Resources was an early and prominent operator in the SCOOP Woodford, and Devon Energy and other Anadarko operators carry the formation in their development plans alongside the shallower stacked targets.

Woodford wells in the SCOOP tend to produce a liquids-rich mix of oil, condensate, and natural gas, with the balance shifting toward gas in the deeper, more thermally mature parts of the basin. In the STACK area to the northwest, the Woodford is generally a deeper objective beneath the Meramec and Osage.

Development across western Oklahoma is governed by the Oklahoma Corporation Commission, which sets spacing and handles the pooling process that brings a drilling unit together. The current operator and completed formation on any specific well can be confirmed through the Commission’s public well records.

Mineral rights in theWoodford.

Mineral owners across the SCOOP and STACK commonly see Woodford wells on their tracts, sometimes alongside Sycamore, Springer, or Meramec wells in the same area. The Woodford is often the deepest producing layer, and a single unit can generate staged royalty income as different formations are developed over the life of the play.

For inheritors with western Oklahoma minerals, the Woodford position is frequently a meaningful part of what a tract represents, because it underlies so much of the basin. Knowing whether your wells are completed in the Woodford or in a shallower formation helps explain what you are receiving and why.

Lease terms and pooling elections across Oklahoma vary by vintage and by tract, and that language can affect net royalty income beyond what the well data alone would suggest. We are happy to walk through what your specific situation looks like alongside the public well records, on a call or by email.