Experimental investigation of sandstone properties under CO2-NaCl solution-rock interactions
文献类型：期刊论文
| 作者 | Feng, Xia-Ting ; Zheng, Hong; Pan, Peng-Zhi
|
| 刊名 | INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
 |
| 出版日期 | 2015 |
| 卷号 | 37页码:451-470 |
| 关键词 | Carbon dioxide storage Quartz-feldspar-detrital sandstone Long-term mechanical Permeability evolution Micro-scale |
| ISSN号 | 1750-5836 |
| DOI | 10.1016/j.ijggc.2015.04.005 |
| 英文摘要 | Carbon dioxide injection in saline aquifer disposal leads to geochemical alteration and geomechanical deformation of the host formations, both in the short- and long-terms. We performed triaxial compression and seepage-creep experiments on quartz-feldspar-detrital sandstone (as a typical storage reservoir material) as well as microscopy. Experimental results provided insight into the deformation of porous sandstone under a water-chemical environment (NaCl solution and CO2-NaCl solution), in both short- and long-terms: the long-term evolution of mechanical deformation and permeability during the migration of carbon dioxide and carbon fixation was thus analysed. Our aim was to study the influence of CO2-NaCl solution on the compressive strength and deformation of quartz-feldspar-detrital sandstone, as well as the impact of CO2-NaCl solution flow-through processes on the mechanical, hydraulic, and chemical properties of reservoir sandstone in terms of its time-dependent deformation, permeability, porosity, and mineral components. Comparison and analysis of short-term experimental results showed that the addition of CO2 enhanced the partial-mineral dissolution and the compressibility for sandstone, as well as helping the brittle-ductile transition in its stress-strain curves. The CO2 dissolved in the pore fluid reduced the compressive strength of sandstone to 7-15% of the compressive strength without CO2. For long-term mechanical and hydraulic properties of sandstone, the corresponding results showed that the threshold stress of shear dilatancy for the sandstone with the CO2-NaCl solution flow-through was reduced to about 17% of the threshold stress without CO2; its hydraulic conductivity was reduced to more than 50% at beginning and fell an order of magnitude at the axial deviatoric stress of 33 MPa. In addition, the increment of time-dependent deformation in long-term test with CO2-NaCl solution flow-through was not obvious at the beginning creep but conspicuous as the increasing stress level, which up to about 20% of the strain without CO2 at the axial deviatoric stress of 33 MPa. With the application of scanning electron microscopy and mercury intrusion porosimetry, the mechanism of the influence of CO2-NaCl solution on sandstone mechanical and hydraulic properties was further investigated at the micro-scale. Besides, the results of this microscopy described the effect of CO2-NaCl solution-sandstone interaction on the sandstone mineral components, shape, and structure; these reflect the sequestration capacity of CO2 in quartz-feldspar-detritus sandstone by carbon fixation. (C) 2015 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Science & Technology - Other Topics ; Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000357146500043 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3730]  |
| 专题 | 岩土力学所知识全产出_期刊论文 岩土力学所知识全产出 国家重点实验室知识产出_期刊论文 |
| 作者单位 | Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn |
| 推荐引用方式 GB/T 7714 | Feng, Xia-Ting,Zheng, Hong,Pan, Peng-Zhi. Experimental investigation of sandstone properties under CO2-NaCl solution-rock interactions[J]. INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL,2015,37:451-470. |
| APA | Feng, Xia-Ting,Zheng, Hong,&Pan, Peng-Zhi.(2015).Experimental investigation of sandstone properties under CO2-NaCl solution-rock interactions.INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL,37,451-470. |
| MLA | Feng, Xia-Ting,et al."Experimental investigation of sandstone properties under CO2-NaCl solution-rock interactions".INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL 37(2015):451-470. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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