Niobrara Stratigraphy – Stephen A. Sonnenberg, 2011, The Niobrara Petroleum System, A Major Tight Resource Play in the Rocky Mountain Region
Corrected on September 17, 2014: Earlier version incorrectly referenced well completion in the Ft. Hays member of the Niobrara
The Niobrara formation, deposited between 87 and 82 million years ago during the Late Cretaceous is composed of two structural units, the Smoky Hill Chalk Member and the Fort Hays Limestone Member which is overlain by the Smoky Hill Chalk Member.
To date, the main focus of oil and gas operations in the Niobrara Play of Colorado and Wyoming has been largely focused on the A, B, and C members of the Smoky Hill Member.
Earlier this year in June 2014, Cirque Resources LP petitioned the COGCC to drill a Fort Hays – Codell well (according to state records) in Weld County near the Colorado – Wyoming border named RAILAY 28-3-1CH . The well has since been drilled and completed, and at this time the completion data is still being held confidential by the Colorado Oil and Gas Conservation Commission (COGCC). The completion results and production data from this well are no doubt being eagerly awaited by industry competitors. Cirque Resources is known for focusing on front-end exploration where it excels, and upon success, selling off the oil-producing asset to medium to large-sized producers. (Cirque Resources LP, Energy and Mining International, Jim Harris)
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