Experimental investigation on H2S-induced oilwell cement degradation under high-temperature conditions for geothermal applications
文献类型：期刊论文
| 作者 | Yin, Yue1,2; Zhang, Liwei1,2; Mei, Kaiyuan3,4; Cheng, Xiaowei3,4; Wang, Yan1,2; Wang, Hanwen1,2 |
| 刊名 | GEOTHERMICS
 |
| 出版日期 | 2024-07-01 |
| 卷号 | 121页码:14 |
| 关键词 | H2S Oilwell cement High temperature Micro-analysis Strength |
| ISSN号 | 0375-6505 |
| DOI | 10.1016/j.geothermics.2024.103023 |
| 英文摘要 | H2S, 2 S, a highly toxic and corrosive substance present in geothermal reservoirs, can significantly reduce the durability of geothermal well cement. High temperature is a prominent environmental characteristic in the extraction of geothermal resources; however, current research primarily focuses on the corrosive effects of H2S 2 S on cement under moderate to low temperatures. This study employed Class G oilwell cement to investigate the corrosion of H2S 2 S on cement under high temperature. The experiments were conducted in a high-temperature reaction vessel. The effects of H2S 2 S on cement structure, chemical composition, and mechanical strength were analyzed under high-temperature conditions via SEM-EDS, XRD, FTIR, nanoindentation, and unconfined compressive strength tests. The results indicate that the corrosive effects of H2S 2 S lead to formation of different reaction layers within the cement structure, forming of microcracks, and changes in material composition. Within the cement, secondary minerals with weaker bonding properties, such as pyrite, pyrrhotite, and gypsum, are generated. Simultaneously, the compressive strength of the samples decreases. The surface nano-hardness and elastic modulus of the cement decrease, while there is a significant increase of nano-hardness and elastic modulus in the interior of cement, due to changes in structure and chemical composition. In summary, high temperature in geothermal applications reduces the level of H2S-induced 2 S-induced cement corrosion due to inhibition of ettringite formation. |
| 资助项目 | National Natural Science Foundation of China[42172315] ; National Natural Science Foundation of China[42207206] |
| WOS研究方向 | Energy & Fuels ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001289977200001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42199]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zhang, Liwei |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Southwest Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploitat, Chengdu 610500, Peoples R China 4.Southwest Petr Univ, Sch New Energy & Mat, Chengdu 610500, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yin, Yue,Zhang, Liwei,Mei, Kaiyuan,et al. Experimental investigation on H2S-induced oilwell cement degradation under high-temperature conditions for geothermal applications[J]. GEOTHERMICS,2024,121:14. |
| APA | Yin, Yue,Zhang, Liwei,Mei, Kaiyuan,Cheng, Xiaowei,Wang, Yan,&Wang, Hanwen.(2024).Experimental investigation on H2S-induced oilwell cement degradation under high-temperature conditions for geothermal applications.GEOTHERMICS,121,14. |
| MLA | Yin, Yue,et al."Experimental investigation on H2S-induced oilwell cement degradation under high-temperature conditions for geothermal applications".GEOTHERMICS 121(2024):14. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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