The Niobrara Formation is overlain by the marine Pierre Shale and is underlain by the Carlile Shale or Benton Shale. During the time of the deposition of the Niobrara Chalk, much life inhabited the seas of the Western Interior Seaway.

The Niobrara shale formation is situated in northeastern Colorado and parts of adjacent Wyoming, Nebraska, and Kansas. Primarily an oil play, it is in the Denver-Julesburg Basin, which has long been a major oil and gas province.

Feb 1, 2010 · The Niobrara shale formation (Denver-Julesburg Basin, Colorado) is a shale rock formation located in Northeast Colorado, Northwest Kansas, Southwest Nebraska, and Southeast Wyoming. Oil and natural gas can be found deep below the earth's surface at …

The "base" of the Niobrara NSR is Pierre Shale, a gray to black rock that is difficult to see in the western half of the river. Those who visit the eastern half of the river, which is much more difficult to float, may see dark bluffs of the rock.

Apr 4, 2024 · Revised in that Niobrara shale of the Colorado group underlies the newly named Telegraph Creek formation. Telegraph Creek occurs at the head of Telegraph Creek, T2S, Rs28 and 29E, Yellowstone Co, MT on the Central Montana uplift.

“tight” formation is considered unconventional and requires new research approaches from both geologic and engineering perspectives to facilitate the greatest success. The work of this thesis aims to address this gap in knowledge by answering questions related to the geology of the Niobrara Formation in Wattenberg Field.

Mar 3, 2022 · The Cretaceous Niobrara Formation and Codell Member of the Carlile Formation are the top producing unconventional zones in the Denver-Julesburg Basin. The basin encompasses eastern and northeastern Colorado, southeastern Wyoming, southwestern Nebraska, and far western Kansas.

The Niobrara Formation of the Western Interior consists of 100 to 250 m of interbedded chalks and calcareous shales. The formation is divided into two members: (1) a thin, basal, dominantly chalk-bearing sequence, the Fort Hays Limestone Member, and (2) an upper, thick, calcareous shale unit, the Smoky Hill Chalk Member.

Niobrara shale oil is an exciting new hydrocarbon prospect for Colorado. Our resource-rich state, while having developed extensive natural gas reserves over the past couple of decades, is now in the process of ‘rediscovering’ its oil in organic-rich shale.

Purpose: to examine the Niobrara formation within the Borie Field and recommend practices and key characteristics when selecting a prospect. Other shales have become major plays. Evaluate well logs to determine properties within the Borie Field. Background. Late Cretaceous chalky shale. Underlies much of the Great Plains.