An Improved Method to Accurately Estimate TOC of Shale Reservoirs and Coal-Measures
Total organic carbon content is the important parameter in determining the quality of hydrocarbon source rocks. To accurately evaluate the TOC parameters of shale reservoirs and coal-measure shale reservoirs, the method to improve the accuracy of a reservoir TOC parameter calculation is investigated...
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| Format: | Article |
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MDPI AG
2023-03-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/16/6/2905 |
| _version_ | 1797612071112671232 |
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| author | Menglei Li Chaomo Zhang |
| author_facet | Menglei Li Chaomo Zhang |
| author_sort | Menglei Li |
| collection | DOAJ |
| description | Total organic carbon content is the important parameter in determining the quality of hydrocarbon source rocks. To accurately evaluate the TOC parameters of shale reservoirs and coal-measure shale reservoirs, the method to improve the accuracy of a reservoir TOC parameter calculation is investigated using the continental shale A1 well, the marine shale B1 well, and the marine-continental transitional shale C1 well as examples. Each of the three wells characterize a different paleoenvironmental regime. The ∆log R method based on natural gamma spectroscopy logging is proposed to calculate the TOC of shale reservoirs, and the dual ∆log R method based on natural gamma spectroscopy logging is proposed to calculate the TOC of coal-measure shale reservoirs. The results show that the proposed new method can reduce the absolute error by about 0.06~7.34 and the relative error by about 6.75~451.54% in the TOC calculation of three wells. The new method greatly expands the applicability of the ∆log R method and can effectively assist in the exploration and development of shale and coal-measure shale reservoirs. |
| first_indexed | 2024-03-11T06:37:07Z |
| format | Article |
| id | doaj.art-a77ce7774ced4c728b2f6a24cf3bc2f8 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-11T06:37:07Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-a77ce7774ced4c728b2f6a24cf3bc2f82023-11-17T10:52:35ZengMDPI AGEnergies1996-10732023-03-01166290510.3390/en16062905An Improved Method to Accurately Estimate TOC of Shale Reservoirs and Coal-MeasuresMenglei Li0Chaomo Zhang1College of Geophysics and Petroleum Resources, Yangtze University, Wuhan 430100, ChinaCollege of Geophysics and Petroleum Resources, Yangtze University, Wuhan 430100, ChinaTotal organic carbon content is the important parameter in determining the quality of hydrocarbon source rocks. To accurately evaluate the TOC parameters of shale reservoirs and coal-measure shale reservoirs, the method to improve the accuracy of a reservoir TOC parameter calculation is investigated using the continental shale A1 well, the marine shale B1 well, and the marine-continental transitional shale C1 well as examples. Each of the three wells characterize a different paleoenvironmental regime. The ∆log R method based on natural gamma spectroscopy logging is proposed to calculate the TOC of shale reservoirs, and the dual ∆log R method based on natural gamma spectroscopy logging is proposed to calculate the TOC of coal-measure shale reservoirs. The results show that the proposed new method can reduce the absolute error by about 0.06~7.34 and the relative error by about 6.75~451.54% in the TOC calculation of three wells. The new method greatly expands the applicability of the ∆log R method and can effectively assist in the exploration and development of shale and coal-measure shale reservoirs.https://www.mdpi.com/1996-1073/16/6/2905organic carbon contentloggingshale reservoircoal-measure shale reservoircontinental shalemarine shale |
| spellingShingle | Menglei Li Chaomo Zhang An Improved Method to Accurately Estimate TOC of Shale Reservoirs and Coal-Measures Energies organic carbon content logging shale reservoir coal-measure shale reservoir continental shale marine shale |
| title | An Improved Method to Accurately Estimate TOC of Shale Reservoirs and Coal-Measures |
| title_full | An Improved Method to Accurately Estimate TOC of Shale Reservoirs and Coal-Measures |
| title_fullStr | An Improved Method to Accurately Estimate TOC of Shale Reservoirs and Coal-Measures |
| title_full_unstemmed | An Improved Method to Accurately Estimate TOC of Shale Reservoirs and Coal-Measures |
| title_short | An Improved Method to Accurately Estimate TOC of Shale Reservoirs and Coal-Measures |
| title_sort | improved method to accurately estimate toc of shale reservoirs and coal measures |
| topic | organic carbon content logging shale reservoir coal-measure shale reservoir continental shale marine shale |
| url | https://www.mdpi.com/1996-1073/16/6/2905 |
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