GENETIC TYPE AND MATURITY OF LOWER PALEOZOIC MARINE HYDROCARBON GASES IN THE EASTERN TARIM BASIN
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dc.contributor.author | Huang D. | |
dc.contributor.author | Liu B. | |
dc.contributor.author | Wang T. | |
dc.contributor.author | Xu Y. | |
dc.contributor.author | Chen S. | |
dc.contributor.author | Zhao M. | |
dc.date.accessioned | 2021-01-09T05:51:36Z | |
dc.date.available | 2021-01-09T05:51:36Z | |
dc.date.issued | 1999 | |
dc.identifier | https://elibrary.ru/item.asp?id=177984 | |
dc.identifier.citation | Chemical Geology, 1999, , 1, 65-77 | |
dc.identifier.issn | 0009-2541 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/22495 | |
dc.description.abstract | Hydrocarbon compositions and their carbon isotopic data for 94 natural gas samples were combined with the results of thermal simulation experiments to complete a comprehensive study of maturity, genetic types and sources of Lower Paleozoic marine hydrocarbon gases from the eastern Tarim Basin. All of the Lower Paleozoic gases are relatively dry (dryness coefficient >0.9) and belong to the marine sapropelic type of cracked gases. These gases are characterized by low δ13C1 and low Δ(δ13C2-δ13C1) values due to a lack of terrestrial source input. Thermal simulation experiments on Upper Proterozoic to Lower Paleozoic source rocks resulted in a δ13C1-Ro regression equation that was used to discriminate the maturities and sources of the natural gases. These natural gases are divided into four genetic types: (1) humic, coal-derived pyrolytic gas; (2) lacustrine sapropelic oil-cracking gas; (3) the marine sapropelic, highly mature oil-cracking gas; and (4) overmature oil-cracking gas. Types (1) and (2) were mainly generated from the Upper Triassic-Middle and Lower Jurassic; types (3) and (4) are mainly generated from the Lower Paleozoic. The data can be used to describe multiple sources and multiple generating stages of natural gas. | |
dc.subject | TARIM BASIN | |
dc.subject | HYDROCARBON GAS | |
dc.subject | CARBON ISOTOPES | |
dc.subject | LOWER PALAEOZOIC | |
dc.title | GENETIC TYPE AND MATURITY OF LOWER PALEOZOIC MARINE HYDROCARBON GASES IN THE EASTERN TARIM BASIN | |
dc.type | Статья | |
dc.subject.age | Paleozoic | en |
dc.subject.age | Палеозой | ru |
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