Experimental study on the corrosion behavior of wellbore cement with a leaking channel under different acidic environments
文献类型：期刊论文
| 作者 | Gan, Manguang1,2; Zhang, Liwei1,2; Wang, Yan1; Qin, Qinglong3,4; Xiao, Ting5,6; Yin, Yue1,2; Wang, Hanwen1,2 |
| 刊名 | INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 139页码:11 |
| 关键词 | Wellbore cement Acidic environment CT scanning Corrosion Leaking channel |
| ISSN号 | 1750-5836 |
| DOI | 10.1016/j.ijggc.2024.104267 |
| 英文摘要 | In the scenario of geologic CO2 storage, the injection of CO2 can create a carbonic acid-rich environment in the reservoir, and Cl-- and SO42--rich low-pH environments may form in the reservoir if the reservoir brine contains high concentrations of Cl- and SO42-. The analysis of morphological changes in wellbore cement containing leakage channels before and after the reaction in different acidic environments is crucial for assessing the risk of CO2 leakage along the internal cracks of wellbore cement. This study characterizes the morphological and structural changes of wellbore cement with a leaking channel before and after the flow of CO2-saturated brine and then compares the results with the structural changes of channels after exposure to HCl and H2SO4 solutions. The results indicate that the cement around the leaking channel dissolves, and the channel volume increases when exposed to CO2-saturated brine. The reaction is more intense at the inlet end than at the outlet end, and some cracks form around the channel. As the HCl solution flows through the channel, a hydrate precipitate that contains calcium and aluminum forms from the inlet to the middle of the channel. This is due to the aqueous phase cations (Ca2+ and Al3+ released from the hydrated cement phases) mixing with the high pH pore fluid ahead of the acid front. Upon flow of the H2SO4 solution through the channel, a thin layer of precipitation forms on both the inlet and outlet ends of the channel. XRD analysis indicates that the precipitation comprises gypsum (CaSO4 & sdot;2H2O), which forms due to the reaction between SO42- in the H2SO4 solution and Ca2+ in the cement hydration product. The volume of the channel decreased after exposure to HCl and H2SO4 solutions, indicating that secondary precipitation resulting from the reaction between the cement and acid exceeded the cement dissolution, and the hydrochloric and sulfuric acidic environments had a limited effect on the expansion of the wellbore cement's internal channel. The experimental results of this study also indicate that in an acidic environment with the same pH, the CO2-saturated brine is the most corrosive to wellbore cement, followed by hydrochloric acid, and sulfuric acid is the least corrosive. |
| 资助项目 | National Natural Science Foundation of China[42172315] ; Key R & D Program of Inner Mongolia Province of China[2021ZD0034] |
| WOS研究方向 | Science & Technology - Other Topics ; Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001348848000001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/43039]  |
| 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, Hubei, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong 999077, Peoples R China 4.Hong Kong Polytech Univ, Res Ctr Resources Engn Carbon Neutral, Hong Kong 999077, Peoples R China 5.Univ Utah, Energy & Geosci Inst, Salt Lake City, UT 84108 USA 6.Univ Utah, Dept Civil & Environm Engn, Salt Lake City, UT 84112 USA |
| 推荐引用方式 GB/T 7714 | Gan, Manguang,Zhang, Liwei,Wang, Yan,et al. Experimental study on the corrosion behavior of wellbore cement with a leaking channel under different acidic environments[J]. INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL,2024,139:11. |
| APA | Gan, Manguang.,Zhang, Liwei.,Wang, Yan.,Qin, Qinglong.,Xiao, Ting.,...&Wang, Hanwen.(2024).Experimental study on the corrosion behavior of wellbore cement with a leaking channel under different acidic environments.INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL,139,11. |
| MLA | Gan, Manguang,et al."Experimental study on the corrosion behavior of wellbore cement with a leaking channel under different acidic environments".INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL 139(2024):11. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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