| Abstract: | Hydrocarbon abundances and stable-isotopic compositions were measured in wells M5, M26, M35 and M102, which represent a range of depths (1270-2000 m) and temperatures (275-330??C) in the field. In order to simulate the production of the geothermal hydrocarbons, gases were collected from the pyrolysis of lignite in the laboratory. This lignite was obtained from a well which sampled rock strata which are identical to those occurring in the field, but which have experienced much lower subsurface temperatures. In both the well and the laboratory observations, high-temperature environments favored higher relative concentrations of methane, ethane and benzene and generally higher ??13C-values in the individual hydrocarbons. The best correlation between the laboratory and well data is obtained when laboratory-produced gases from experiments conducted at lower (400??C) and higher (600??C) temperatures are mixed. This improved correlation suggests that the wells are sampling hydrocarbons produced from a spectrum of depths and temperatures in the sediments. ?? 1988. |
| Genre: | Article |
| ProdID: | 70013933 |
| Citation Author: | Des, Marais, D. J.; Stallard, M. L.; Nehring, N. L.; Truesdell, A. H. |
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| Citation End Page: | 167 |
| Citation Issue: | 1-3 |
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| Citation Language: | English |
| Citation Larger Work Title: | Chemical Geology |
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| Citation Number Of Pages: | 9 |
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| Citation Publisher: | Elsevier |
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| Citation Search Results Text: | Carbon isotope geochemistry of hydrocarbons in the Cerro Prieto geothermal field, Baja California Norte, Mexico; 1988; Article; Journal; Chemical Geology; Des, Marais, D. J.; Stallard, M. L.; Nehring, N. L.; Truesdell, A. H. |
| Citation Start Page: | 159 |
| Citation Volume: | 71 |
| Citation Year: | 1988 |
| Type: | citation/reference |
| Text: | Carbon isotope geochemistry of hydrocarbons in the Cerro Prieto geothermal field, Baja California Norte, Mexico; 1988; Article; Journal; Chemical Geology; Des, Marais, D. J.; Stallard, M. L.; Nehring, N. L.; Truesdell, A. H. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1016/0009-2541(88)90112-X |
| Date Other: | Fri, 1 Jan 1988 00:00 -0600 |
| Publisher: | Elsevier |
