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Suppressed vitrinite reflectance in the Ferron coalbed gas fairway, central Utah: Possible influence of overpressure

International Journal of Coal Geology

By:
and
DOI: 10.1016/S0166-5162(03)00076-4

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Abstract

Chemical and thermoplastic properties of coals in the Ferron coalbed methane fairway indicate that coals in the north are of higher rank than coals in the south. Measured vitrinite reflectance does not accurately show this variation of coal rank. Although vitrinite reflectance in the southern and central part of the fairway is consistent with other measures of coal rank, suppressed vitrinite reflectance is observed in the north where methane contents are relatively high. This coincidence of suppressed reflectance and relatively high coalbed methane yields may be significant. We speculate that the suppressed reflectance values result from a burial history where overpressure developed during the early stages of coalification and persisted until recent uplift and cooling; such instances may be diagnostic of prospective coalbed methane targets elsewhere. ?? 2003 Published by Elsevier B.V.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Suppressed vitrinite reflectance in the Ferron coalbed gas fairway, central Utah: Possible influence of overpressure
Series title:
International Journal of Coal Geology
DOI:
10.1016/S0166-5162(03)00076-4
Volume
56
Issue:
1-2
Year Published:
2003
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
International Journal of Coal Geology
First page:
49
Last page:
67