| Abstract: | The Piceance Basin is a hydrocarbon-rich province that has natural gas production from reservoirs ranging in age from Late Jurassic to Eocene and large undeveloped resources of natural gas in coal beds and tight sandstone reservoirs of Cretaceous age. Gases from all producing intervals are of predominantly thermal origin and become isotopically heavier and chemically drier with increasing thermal maturity of reservoirs. Based on chemical and isotopic composition, three major types of gases can be distinguished: those generated from mixed type II and III kerogens, those from dispersed type III kerogen, and those from coal. A fourth, distinct type of isotopically light thermogenic gas occurs in immature reservoirs of the Eocene Green River Formation. This gas is inferred to have migrated from unidentified deeper, more mature source rocks. -from Authors |
| Genre: | Article |
| ProdID: | 70015947 |
| Citation Author: | Johnson, R. C.; Rice, D. D. |
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| Citation End Page: | 829 |
| Citation Issue: | 6 |
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| Citation Language: | English |
| Citation Larger Work Title: | American Association of Petroleum Geologists Bulletin |
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| Citation Number Of Pages: | 25 |
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| Citation Search Results Text: | Occurrence and geochemistry of natural gases, Piceance Basin, northwest Colorado; 1990; Article; Journal; American Association of Petroleum Geologists Bulletin; Johnson, R. C.; Rice, D. D. |
| Citation Start Page: | 805 |
| Citation Volume: | 74 |
| Citation Year: | 1990 |
| Type: | citation/reference |
| Text: | Occurrence and geochemistry of natural gases, Piceance Basin, northwest Colorado; 1990; Article; Journal; American Association of Petroleum Geologists Bulletin; Johnson, R. C.; Rice, D. D. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Mon, 1 Jan 1990 00:00 -0600 |
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