Yelwa, Nura Abdulmumini and Mustapha, Khairul Azlan and Opuwari, Mimonitu and Hakimi, Mohammed Hail (2023) Shale-gas potential from Cretaceous succession in South Africa's Orange Basin: Insights from integrated geochemical evaluations. Marine Georesources & Geotechnology, 41 (10). pp. 1071-1091. ISSN 1064-119X, DOI https://doi.org/10.1080/1064119X.2022.2118647.
Full text not available from this repository.Abstract
Shale sediments were collected from four Cretaceous stratigraphic units across four explorations well locations in South Africa's Orange Basin and analysed to determine organic-matter characteristics, such as amount, quality, thermal maturity, and their viability as gas resources. The geochemical results show that the Cretaceous shales contain moderate organic quantities, as shown by TOC averagely up to 1.29%. The organic facies consist primarily of Type III kerogen, as proven alongside low hydrogen indexes between 40 and 133 mg HC/g TOC. As seen under a reflected light microscope, the dominance of such land plant-rich organic matter is in harmony with the significant amount of Vitrinite macerals. These organic sediments can produce primarily gas when they mature. The geological and geochemical properties of the organic sediments, chiefly Type III kerogen, generate both wet and dry gas, particularly when adequate thermal maturity is enhanced at deeper locations. Thus, the Orange Basin is considered promising for shale gas exploration and production.
| Item Type: | Article |
|---|---|
| Funders: | Institut Pengurusan dan Pemantauan Penyelidikan, Universiti Malaya, TETFund National Research Fund |
| Uncontrolled Keywords: | Shale gas; source rocks; Orange Basin; organic matter; kerogen |
| Subjects: | Q Science > Q Science (General) Q Science > QE Geology |
| Divisions: | Faculty of Science > Department of Geology |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 11 Sep 2025 08:25 |
| Last Modified: | 11 Sep 2025 08:25 |
| URI: | http://eprints.um.edu.my/id/eprint/50542 |
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