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Gas Occurrence in Piceance Basin, Colorado1

By
Clark Millison
Clark Millison
Englewood, Colorado
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Published:
January 01, 1963

Abstract

Mostly gas is produced in the Piceance basin of western Colorado. The basin, containing about 4,000 square miles, is well defined by the Tertiary-Cretaceous outcrop contact beyond which are the surrounding elevated areas. The basin is in the early stages of development with a density of only one well for every 19 square miles. The lack of pipeline outlet prior to 1956 resulted in slow development, but now three pipelines serve the area, and drilling activity has been at an accelerated pace. Of the total wells drilled, approximately one half are capable of producing gas from the Tertiary and Upper Cretaceous rocks. Owing to the thickness of the section (22,000 feet to the basement), only eight wells have tested the pre-Upper Cretaceous section.

Most accumulations of gas are due to stratigraphic traps. The paucity of subsurface data is the cause for the present disagreement among geologists on the stratigraphy and geologic history. Tentative correlations from the outcrops on the periphery of the basin are carried across the basin, particularly of the Mesaverde and upper Mancos beds, with a discussion of how the depositional history complicates the problem. The development history, which includes the identification of the multiple gas-producing zones, indicates that this basin will become one of the important gas-producing areas of the Rocky Mountains.

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Contents

AAPG Memoir

Backbone of the Americas: Tectonic History from Pole to Pole

Orlo E. Childs
Orlo E. Childs
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B. Warren Beebe
B. Warren Beebe
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American Association of Petroleum Geologists
Volume
2
ISBN electronic:
9781629812359
Publication date:
January 01, 1963

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