An easy and efficient way to evaluate mechanical properties of gas hydrate-bearing sediments: The direct shear test
文献类型：期刊论文
| 作者 | Liu, Zhichao1; Wei, Houzhen2; Peng, Li1; Wei, Changfu2; Ning, Fulong1 |
| 刊名 | JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
 |
| 出版日期 | 2017 |
| 卷号 | 149页码:56-64 |
| 关键词 | Gas hydrate CO2 Direct shear Sediment Mechanical property |
| ISSN号 | 0920-4105 |
| DOI | 10.1016/j.petrol.2016.09.040 |
| 英文摘要 | Understanding the mechanical behaviours of gas hydrate-bearing sediments (GHBS) is important for their associated applications in wellbore stability, stratum deformation during exploitation, geological disaster prevention, and the risk assessment of replacing CH4 with CO2 in hydrate reservoirs and CO2 sequestration in oceans. However, triaxial tests on mechanical properties of GHBS are taxing and time-consuming. Here, we presented an easy and efficient way to evaluate these behaviours by using a self-developed direct shear apparatus. Then a series of direct shear tests on GHBS represented by CO2 hydrate-bearing silt were performed to investigate their mechanical behaviours and strength indices by changing the axial pressure, CO2 hydrate saturation, shear rate and hydrate synthesis temperature. Our results indicate that CO2 hydrate significantly strengthens specimens by cementing silt grains. In addition, when hydrate saturation increases, the cohesions are enhanced from 0.09 to 2.39 MPa, and the internal friction angles increase and decrease at the range from 28.6 degrees to 43.3 degrees under the experimental conditions. These findings have direct implications for evaluating the stability and safety of natural gas hydrate reservoirs, CO2 replacement to extract CH4 and CO2 sequestration. |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000393007900005 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3983]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.China Univ Geosci, Fac Engn ; 2.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech |
| 推荐引用方式 GB/T 7714 | Liu, Zhichao,Wei, Houzhen,Peng, Li,et al. An easy and efficient way to evaluate mechanical properties of gas hydrate-bearing sediments: The direct shear test[J]. JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,2017,149:56-64. |
| APA | Liu, Zhichao,Wei, Houzhen,Peng, Li,Wei, Changfu,&Ning, Fulong.(2017).An easy and efficient way to evaluate mechanical properties of gas hydrate-bearing sediments: The direct shear test.JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,149,56-64. |
| MLA | Liu, Zhichao,et al."An easy and efficient way to evaluate mechanical properties of gas hydrate-bearing sediments: The direct shear test".JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING 149(2017):56-64. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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