Distribution and significance of maleimides in organic matter-enriched shales and derived crude oils
The maleimides, or 1H-pyrrole-2, 5-diones, are one of the novel types of biological markers existed in both sedimentary organic matter and petroleum, which could be products derived from the degradation of chlorophylls and bacteriochlorophylls. In this study, the maleimides composition was investiga...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
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Editorial Office of Petroleum Geology and Experiment
2022-05-01
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| Series: | Shiyou shiyan dizhi |
| Subjects: | |
| Online Access: | https://www.sysydz.net/cn/article/doi/10.11781/sysydz202203522 |
| _version_ | 1827329717480456192 |
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| author | Guangli WANG Rui CHANG Jingyi LI Lei ZHU |
| author_facet | Guangli WANG Rui CHANG Jingyi LI Lei ZHU |
| author_sort | Guangli WANG |
| collection | DOAJ |
| description | The maleimides, or 1H-pyrrole-2, 5-diones, are one of the novel types of biological markers existed in both sedimentary organic matter and petroleum, which could be products derived from the degradation of chlorophylls and bacteriochlorophylls. In this study, the maleimides composition was investigated in detail for several crude oils and petroleum source rocks with varying depositional settings, and abundant 2-methyl-3-n-propyl (Me, n-Pr) and 2-methyl-3-isobutyl (Me, i-Bu) maleimide, together with aryl isoprenoids were detected. These pigments-derived products were prominently generated by Chlorobiaceae and are especially abundant in the saline and marine black shales and related oils, indicating that PZE (photic zone euxinia) occurred in the brackish water environment of the Nenjiang Formation in the Songliao Basin, the saline to semi-saline water environment of the Shahejie Formation in the Bohai Bay Basin, and the marine environment of the Napo Formation in the Oriente Basin, showing strong reduction preservation conditions. It can be concluded that PZE is a favorable factor for the enrichment of organic matter and the development of high-quality source layers. In addition, the ratios of Me, i-Bu/Me, Et and Me, n-Pr/Me, when coupled together, could be used to diagnose the depositional conditions such as marine, saline, semi-saline or brackish water column. |
| first_indexed | 2024-03-07T15:45:08Z |
| format | Article |
| id | doaj.art-0a90a3d12bea468099229b820a7c36ff |
| institution | Directory Open Access Journal |
| issn | 1001-6112 |
| language | zho |
| last_indexed | 2024-03-07T15:45:08Z |
| publishDate | 2022-05-01 |
| publisher | Editorial Office of Petroleum Geology and Experiment |
| record_format | Article |
| series | Shiyou shiyan dizhi |
| spelling | doaj.art-0a90a3d12bea468099229b820a7c36ff2024-03-05T04:31:16ZzhoEditorial Office of Petroleum Geology and ExperimentShiyou shiyan dizhi1001-61122022-05-0144352252910.11781/sysydz202203522sysydz-44-3-522Distribution and significance of maleimides in organic matter-enriched shales and derived crude oilsGuangli WANG0Rui CHANG1Jingyi LI2Lei ZHU3State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, ChinaState Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, ChinaState Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, ChinaState Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, ChinaThe maleimides, or 1H-pyrrole-2, 5-diones, are one of the novel types of biological markers existed in both sedimentary organic matter and petroleum, which could be products derived from the degradation of chlorophylls and bacteriochlorophylls. In this study, the maleimides composition was investigated in detail for several crude oils and petroleum source rocks with varying depositional settings, and abundant 2-methyl-3-n-propyl (Me, n-Pr) and 2-methyl-3-isobutyl (Me, i-Bu) maleimide, together with aryl isoprenoids were detected. These pigments-derived products were prominently generated by Chlorobiaceae and are especially abundant in the saline and marine black shales and related oils, indicating that PZE (photic zone euxinia) occurred in the brackish water environment of the Nenjiang Formation in the Songliao Basin, the saline to semi-saline water environment of the Shahejie Formation in the Bohai Bay Basin, and the marine environment of the Napo Formation in the Oriente Basin, showing strong reduction preservation conditions. It can be concluded that PZE is a favorable factor for the enrichment of organic matter and the development of high-quality source layers. In addition, the ratios of Me, i-Bu/Me, Et and Me, n-Pr/Me, when coupled together, could be used to diagnose the depositional conditions such as marine, saline, semi-saline or brackish water column.https://www.sysydz.net/cn/article/doi/10.11781/sysydz202203522aryl isoprenoidmaleimidechlorobiaceaepze (photic zone euxinia)om-rich shalessource rockdeposition environment |
| spellingShingle | Guangli WANG Rui CHANG Jingyi LI Lei ZHU Distribution and significance of maleimides in organic matter-enriched shales and derived crude oils Shiyou shiyan dizhi aryl isoprenoid maleimide chlorobiaceae pze (photic zone euxinia) om-rich shales source rock deposition environment |
| title | Distribution and significance of maleimides in organic matter-enriched shales and derived crude oils |
| title_full | Distribution and significance of maleimides in organic matter-enriched shales and derived crude oils |
| title_fullStr | Distribution and significance of maleimides in organic matter-enriched shales and derived crude oils |
| title_full_unstemmed | Distribution and significance of maleimides in organic matter-enriched shales and derived crude oils |
| title_short | Distribution and significance of maleimides in organic matter-enriched shales and derived crude oils |
| title_sort | distribution and significance of maleimides in organic matter enriched shales and derived crude oils |
| topic | aryl isoprenoid maleimide chlorobiaceae pze (photic zone euxinia) om-rich shales source rock deposition environment |
| url | https://www.sysydz.net/cn/article/doi/10.11781/sysydz202203522 |
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