Here are points to remember when exploring Niobrara in the Rockies

Journal Article · Mon Aug 17 04:00:00 EDT 1992 · Oil and Gas Journal; (United States)

OSTI ID:7283637

Harnett, R A

The Niobrara formation in the central Rocky Mountain region has been written about at length by several authors, most recently concerning Silo field near Cheyenne, Wyo. The Niobrara has proven an enigma to many explorationists, because while the promise is great (individual wells with cumulative production in excess of 1 million bbl), many times the results have been disappointing. This paper discusses observations and concepts that may help start exploration on the right track. The Niobrara in most of Wyoming and Colorado is a limey shale or shaley lime with a great amount of organic carbon incorporated in the sediment. The lime content causes the Niobrara to be more brittle, and therefore it fractures more readily than the softer Cody/Steele/Pierre shale above or the Carlile shale below.

• OSTI ID: 7283637
• Journal Information: Oil and Gas Journal; (United States), Journal Name: Oil and Gas Journal; (United States) Vol. 90:33; ISSN OIGJA; ISSN 0030-1388
• Country of Publication: United States
• Language: English

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