Integrated analysis, reservoir characterization, and resource potential of the Niobrara Formation : Lowry Bombing Range, Arapahoe and Adams County, CO
The Cretaceous Niobrara Formation is a productive, unconventional petroleum exploration target in the Denver Basin, Colorado. It is a self-sourced oil and gas play composed of alternating chalk and marl units. Ductile marls can serve as major source rocks with TOC values ranging 2-8 wt. %. These marly intervals can also serve as seals for the underlying brittle chalk reservoirs. Chalk intervals are comprised of carbonate-rich pellets, coccoliths, pelagic foraminifera, inoceramids, and oyster shells, and tend to have higher porosity and permeability values. Porosity distribution is controlled ...