Genesis Analysis of High-Gamma Ray Sandstone Reservoir and Its Log Evaluation Techniques: A Case Study from the Junggar Basin, Northwest China
In the Junggar basin, northwest China, many high gamma-ray (GR) sandstone reservoirs are found and routinely interpreted as mudstone non-reservoirs, with negative implications for the exploration and exploitation of oil and gas. Then, the high GR sandstone reservoirs’ recognition principles, genesis...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2013/848201 |
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| author | Liang Wang Zhiqiang Mao Zhongchun Sun Xingping Luo Yong Song Zhen Liu |
| author_facet | Liang Wang Zhiqiang Mao Zhongchun Sun Xingping Luo Yong Song Zhen Liu |
| author_sort | Liang Wang |
| collection | DOAJ |
| description | In the Junggar basin, northwest China, many high gamma-ray (GR) sandstone reservoirs are found and routinely interpreted as mudstone non-reservoirs, with negative implications for the exploration and exploitation of oil and gas. Then, the high GR sandstone reservoirs’ recognition principles, genesis, and log evaluation techniques are systematically studied. Studies show that the sandstone reservoirs with apparent shale content greater than 50% and GR value higher than 110API can be regarded as high GR sandstone reservoir. The high GR sandstone reservoir is mainly and directly caused by abnormally high uranium enrichment, but not the tuff, feldspar or clay mineral. Affected by formation’s high water sensitivity and poor borehole quality, the conventional logs can not recognize reservoir and evaluate the physical property of reservoirs. Then, the nuclear magnetic resonance (NMR) logs is proposed and proved to be useful in reservoir recognition and physical property evaluation. |
| format | Article |
| id | doaj-art-929910a8a4cb486286504f5da935759f |
| institution | Kabale University |
| issn | 1537-744X |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-929910a8a4cb486286504f5da935759f2025-02-03T01:29:18ZengWileyThe Scientific World Journal1537-744X2013-01-01201310.1155/2013/848201848201Genesis Analysis of High-Gamma Ray Sandstone Reservoir and Its Log Evaluation Techniques: A Case Study from the Junggar Basin, Northwest ChinaLiang Wang0Zhiqiang Mao1Zhongchun Sun2Xingping Luo3Yong Song4Zhen Liu5State 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, ChinaResearch Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay 834000, ChinaResearch Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay 834000, ChinaResearch Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay 834000, ChinaNo. 203 Research Institute of Nuclear Industry, Shanxi 712000, ChinaIn the Junggar basin, northwest China, many high gamma-ray (GR) sandstone reservoirs are found and routinely interpreted as mudstone non-reservoirs, with negative implications for the exploration and exploitation of oil and gas. Then, the high GR sandstone reservoirs’ recognition principles, genesis, and log evaluation techniques are systematically studied. Studies show that the sandstone reservoirs with apparent shale content greater than 50% and GR value higher than 110API can be regarded as high GR sandstone reservoir. The high GR sandstone reservoir is mainly and directly caused by abnormally high uranium enrichment, but not the tuff, feldspar or clay mineral. Affected by formation’s high water sensitivity and poor borehole quality, the conventional logs can not recognize reservoir and evaluate the physical property of reservoirs. Then, the nuclear magnetic resonance (NMR) logs is proposed and proved to be useful in reservoir recognition and physical property evaluation.http://dx.doi.org/10.1155/2013/848201 |
| spellingShingle | Liang Wang Zhiqiang Mao Zhongchun Sun Xingping Luo Yong Song Zhen Liu Genesis Analysis of High-Gamma Ray Sandstone Reservoir and Its Log Evaluation Techniques: A Case Study from the Junggar Basin, Northwest China The Scientific World Journal |
| title | Genesis Analysis of High-Gamma Ray Sandstone Reservoir and Its Log Evaluation Techniques: A Case Study from the Junggar Basin, Northwest China |
| title_full | Genesis Analysis of High-Gamma Ray Sandstone Reservoir and Its Log Evaluation Techniques: A Case Study from the Junggar Basin, Northwest China |
| title_fullStr | Genesis Analysis of High-Gamma Ray Sandstone Reservoir and Its Log Evaluation Techniques: A Case Study from the Junggar Basin, Northwest China |
| title_full_unstemmed | Genesis Analysis of High-Gamma Ray Sandstone Reservoir and Its Log Evaluation Techniques: A Case Study from the Junggar Basin, Northwest China |
| title_short | Genesis Analysis of High-Gamma Ray Sandstone Reservoir and Its Log Evaluation Techniques: A Case Study from the Junggar Basin, Northwest China |
| title_sort | genesis analysis of high gamma ray sandstone reservoir and its log evaluation techniques a case study from the junggar basin northwest china |
| url | http://dx.doi.org/10.1155/2013/848201 |
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