Numerical study on the deformation of soil stratum and vertical wells with gas hydrate dissociation
| العنوان: | Numerical study on the deformation of soil stratum and vertical wells with gas hydrate dissociation |
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| المؤلفون: | Xudong Chen, Xiaobing Lu, Yaohong Shi, Wei Wei, Xuhui Zhang |
| المصدر: | Acta Mechanica Sinica. 32:905-914 |
| بيانات النشر: | Springer Science and Business Media LLC, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | Materials science, integumentary system, 010504 meteorology & atmospheric sciences, Mechanical Engineering, Hydrostatic pressure, Clathrate hydrate, Computational Mechanics, Modulus, Soil science, 010502 geochemistry & geophysics, 01 natural sciences, Overlayer, Friction angle, Soil water, Cohesion (geology), Maximum displacement, 0105 earth and related environmental sciences |
| الوصف: | Gas hydrate (GH) dissociates owing to thermal injection or pressure reduction from the well in gas/oil or GH exploitation. GH dissociation leads to, for example, decreases in soil strength, engineering failures such as wellbore instabilities, and marine landslides. The FLAC3D software was used to analyze the deformation of the soil stratum and vertical wells with GH dissociation. The effects of Young’s modulus, internal friction angle, cohesion of the GH layer after dissociation, and the thickness of the GH layer on the deformation of soils were studied. It is shown that the maximum displacement in the whole soil stratum occurs at the interface between the GH layer and the overlayer. The deformation of the soil stratum and wells increases with decreases in the modulus, internal friction angle, and cohesion after GH dissociation. The increase in thickness of the GH layer enlarges the deformation of the soil stratum and wells with GH dissociation. The hydrostatic pressure increases the settlement of the soil stratum, while constraining horizontal displacement. The interaction between two wells becomes significant when the affected zone around each well exceeds half the length of the GH dissociation zone. |
| تدمد: | 1614-3116 0567-7718 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::3c12dc4cb12cbb6250da56ac56addae2Test https://doi.org/10.1007/s10409-016-0589-8Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi...........3c12dc4cb12cbb6250da56ac56addae2 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 16143116 05677718 |
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