Wellbore shrinkage during drilling in methane hydrate reservoirs
Abstract Methane hydrates as a clean and abundant energy source, have attracted the attention of the world. However, the instability of hydrate reservoirs makes it difficult to drill production wells. After drilling, the creep properties of hydrate reservoir would cause wellbore shrinkage, which wil...
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crwiley:10.1002/ese3.323 2024-06-02T08:10:24+00:00 Wellbore shrinkage during drilling in methane hydrate reservoirs Yan, Chuanliang Li, Yang Yan, Xinjiang Cheng, Yuanfang Han, Zhongying Tian, Wanqing Ren, Xu 2019 http://dx.doi.org/10.1002/ese3.323 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ese3.323 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ese3.323 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Energy Science & Engineering volume 7, issue 3, page 930-942 ISSN 2050-0505 2050-0505 journal-article 2019 crwiley https://doi.org/10.1002/ese3.323 2024-05-03T11:26:52Z Abstract Methane hydrates as a clean and abundant energy source, have attracted the attention of the world. However, the instability of hydrate reservoirs makes it difficult to drill production wells. After drilling, the creep properties of hydrate reservoir would cause wellbore shrinkage, which will affect the drilling safety. This study is to analysis law of wellbore shrinkage after a hydrate well drilled. The results demonstrate that wellbore shrinkage mainly results from plastic deformation and creep deformation. The largest and smallest values are separately found in the directions of the maximum and minimum horizontal in‐situ stress. With the increase of initial in‐situ stress ratio, wellbore shrinkage linearly rise. Under the condition of low horizontal in‐situ stress ratio, wellbore shrinkage is mainly determined by creep deformation. Under the condition of high horizontal in‐situ stress ratio, wellbore shrinkage commonly depends on plastic deformation and creep deformation. With deepening methane hydrate reservoirs, wellbore shrinkage shows a nonlinear increase. For formations with higher hydrate saturation, larger wellbore shrinkage would occur. The research results can provide a theoretical basis for the selection of drilling method while drilling in hydrate formations. Article in Journal/Newspaper Methane hydrate Wiley Online Library Energy Science & Engineering 7 3 930 942 |
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Abstract Methane hydrates as a clean and abundant energy source, have attracted the attention of the world. However, the instability of hydrate reservoirs makes it difficult to drill production wells. After drilling, the creep properties of hydrate reservoir would cause wellbore shrinkage, which will affect the drilling safety. This study is to analysis law of wellbore shrinkage after a hydrate well drilled. The results demonstrate that wellbore shrinkage mainly results from plastic deformation and creep deformation. The largest and smallest values are separately found in the directions of the maximum and minimum horizontal in‐situ stress. With the increase of initial in‐situ stress ratio, wellbore shrinkage linearly rise. Under the condition of low horizontal in‐situ stress ratio, wellbore shrinkage is mainly determined by creep deformation. Under the condition of high horizontal in‐situ stress ratio, wellbore shrinkage commonly depends on plastic deformation and creep deformation. With deepening methane hydrate reservoirs, wellbore shrinkage shows a nonlinear increase. For formations with higher hydrate saturation, larger wellbore shrinkage would occur. The research results can provide a theoretical basis for the selection of drilling method while drilling in hydrate formations. |
format |
Article in Journal/Newspaper |
author |
Yan, Chuanliang Li, Yang Yan, Xinjiang Cheng, Yuanfang Han, Zhongying Tian, Wanqing Ren, Xu |
spellingShingle |
Yan, Chuanliang Li, Yang Yan, Xinjiang Cheng, Yuanfang Han, Zhongying Tian, Wanqing Ren, Xu Wellbore shrinkage during drilling in methane hydrate reservoirs |
author_facet |
Yan, Chuanliang Li, Yang Yan, Xinjiang Cheng, Yuanfang Han, Zhongying Tian, Wanqing Ren, Xu |
author_sort |
Yan, Chuanliang |
title |
Wellbore shrinkage during drilling in methane hydrate reservoirs |
title_short |
Wellbore shrinkage during drilling in methane hydrate reservoirs |
title_full |
Wellbore shrinkage during drilling in methane hydrate reservoirs |
title_fullStr |
Wellbore shrinkage during drilling in methane hydrate reservoirs |
title_full_unstemmed |
Wellbore shrinkage during drilling in methane hydrate reservoirs |
title_sort |
wellbore shrinkage during drilling in methane hydrate reservoirs |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1002/ese3.323 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ese3.323 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ese3.323 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_source |
Energy Science & Engineering volume 7, issue 3, page 930-942 ISSN 2050-0505 2050-0505 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/ese3.323 |
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Energy Science & Engineering |
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7 |
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3 |
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930 |
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942 |
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1800756259243163648 |