A Mississippian-age stacked-sand producer across the Illinois Basin, sitting above the Aux Vases. Active conventional production across Illinois, Indiana, and Western Kentucky.
Get Your Free Mineral ValuationThe Cypress Sandstone is a Late Mississippian-age sandstone that sits stratigraphically above the Aux Vases Sandstone across most of the Illinois Basin. The Cypress comprises multiple individual sand bodies — sometimes called Big Cypress, Little Cypress, or simply "the Cypress" on royalty statements — at depths typically between 1,200 and 2,500 feet.
The Cypress is a workhorse Illinois Basin producer with active waterflood operations on hundreds of fields. Many royalty statements show commingled Cypress + Aux Vases production where both formations contribute to wellbore output.
Age: Late Mississippian (Chesterian)
Depth: Approximately 1,200–2,500 feet TVD
Lithology: Fine to medium sandstone, multiple stacked sand bodies separated by shales
Stacked context: Above the Aux Vases, below the Tar Springs and other shallower intervals
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