Failure mode of cement sheath in salt cavern gas storge wellbore based on coupling plasticity and damage evolution
文献类型：期刊论文
| 作者 | He, Tao5,6; Wang, Tongtao5; Zhou, Jun7; An, Guoyin1; Liu, Junhua3; Yu, Wanbao2; Daemen, J. J. K.4 |
| 刊名 | INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
 |
| 出版日期 | 2022-12-01 |
| 卷号 | 160期号:-页码:- |
| 关键词 | Wellbore cement sheath Micro annulus Damage evolution Plastic strain Cyclic loading Cavity shrinkage |
| ISSN号 | 1365-1609 |
| 英文摘要 | In this paper, the failure mechanism of the cement sheath in gas storage salt caverns under the cyclic internal pressure and cavity shrinkage was explored. First, an elastoplastic damage evolution model for the completion cement was established and further developed as a constitutive equation for numerical calculation. Second, the verification of the model is completed by mechanical tests and numerical examples, respectively. The uniaxial and triaxial compression tests, Brazilian splitting tests, and cyclic loading tests were performed to verify the theoretical stress-strain curves. Numerical examples were performed to verify the stability of the constitutive equation in numerical simulations. Finally, the constitutive equation is applied to the engineering, and the numerical model calculation of wellbore fatigue damage and salt cavity shrinkage was performed. The following conclusions are obtained: cyclic loading will increase the plastic strain of the cement sheath, and micro -annuluses will form on the inner surface after 25 years of operation. The shrinkage of the salt cavity will debond the outer side of the cement sheath near the open well. With the increase of cavity shrinkage, the range of wellbore failure increases upwards. When the cavity shrinkage rate exceeds 10%, partial debonding will occur on the cemented surface between the cement sheath and the rock salt formation, which may provide a channel for natural gas leakage. |
| 学科主题 | Engineering ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:000894485600002 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35530]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Jiangsu Gas Storage Company, PetroChina, Zhenjiang, 212004, Jiangsu, China 2.NO.1 Cementing Company, BHDC, PetroChina, Renqiu, 062552, Hebei, China 3.Engineering Service Center, NO.2 Drilling Engineering Company BHDC, PetroChina, Langfang, 065007, Hebei, China 4.Mackay School of Earth Sciences and Engineering, University of Nevada, Reno, 89557, Nevada, USA 5.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, 430071, China 6.University of Chinese Academy of Sciences, Beijing, 100049, China 7.CNOOC Research Institute Co.,Ltd, Beijing, 100028, China |
| 推荐引用方式 GB/T 7714 | He, Tao,Wang, Tongtao,Zhou, Jun,et al. Failure mode of cement sheath in salt cavern gas storge wellbore based on coupling plasticity and damage evolution[J]. INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,2022,160(-):-. |
| APA | He, Tao.,Wang, Tongtao.,Zhou, Jun.,An, Guoyin.,Liu, Junhua.,...&Daemen, J. J. K..(2022).Failure mode of cement sheath in salt cavern gas storge wellbore based on coupling plasticity and damage evolution.INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,160(-),-. |
| MLA | He, Tao,et al."Failure mode of cement sheath in salt cavern gas storge wellbore based on coupling plasticity and damage evolution".INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES 160.-(2022):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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