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The effects of porosity and permeability changes on simulated supercritical CO2 migration front in tight glutenite under different effective confining pressures from 1.5 MPa to 21.5 MPa

文献类型：期刊论文

作者Xu, Liang1,3; Li, Qi1,3; Myers, Matthew2; Tan, Yongsheng1,3; He, Miao1,3; Umeobi, Happiness Ijeoma1,3; Li, Xiaochun1,3
刊名GREENHOUSE GASES-SCIENCE AND TECHNOLOGY
出版日期2020-12-12
期号-页码:18
关键词geologic CO2 storage effective confining pressure core flooding experiment numerical simulation tight glutenite migration front
ISSN号2152-3878
DOI10.1002/ghg.2043
英文摘要Depending on rock pore compressibility, a change in effective confining pressure (ECP) can have a significant influence on supercritical CO2 (SC-CO2) migration characteristics in natural reservoirs. In this study, a tight glutenite sample was used to conduct porosity/permeability measurements under different ECPs of 1.5, 5.5, 9.5, 13.5, 17.5 and 21.5 MPa. Then a SC-CO2 drainage core flooding experiment, which was monitored using nuclear magnetic resonance (NMR) technique, was conducted at an ECP of 5.5 MPa. Measurement results show that the porosity and permeability of the sample were comparatively low (at an ECP of 1.5 MPa, 8.3% and 2.4 mD, respectively). With increasing ECP, the porosity/permeability decreased rapidly initially then more slowly at the larger ECP value. NMR results shows that SC-CO2 preferentially displaced water creating flow channels inside the sample. At SC-CO2 breakthrough, the average residual water saturation was 69.86%. Following breakthrough, SC-CO2 continued to displace the water creating more substantial flow channels until they were sufficient to transport the SC-CO2 at the fixed flow rate, resulting in a residual water saturation of 42.72%. A two-dimensional computational model was then established based on these experimental results to simulate the fluid behaviors at an ECP of 5.5 MPa, and then the model was extended to different ECP values ranging from 1.5 to 21.5 MPa. Numerical simulation results show that SC-CO2 displaced water in an inverted triangle-like shape. Under different ECPs of 1.5, 5.5, 9.5, 13.5, 17.5 and 21.5 MPa, the simulated breakthrough times were 36.8, 44.6, 54.8, 56.4, 59.0 and 59.4 mins with an average SC-CO2 saturation of 13.18, 16.71, 18.71, 19.72, 21.99 and 22.19%, respectively. SC-CO2 breakthrough occurred quicker for lower ECP values resulting in a smaller SC-CO2 saturation. Likewise, with larger ECP value, SC-CO2 breakthrough occurred later, and a higher SC-CO2 saturation was seen. (c) 2020 Society of Chemical Industry and John Wiley & Sons, Ltd.
资助项目National Natural Science Foundation of China[41872210] ; National Natural Science Foundation of China[41274111] ; Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering, IRSM, CAS[Z017002]
WOS研究方向Energy & Fuels ; Engineering ; Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000597730800001
出版者WILEY PERIODICALS, INC
源URL[http://119.78.100.198/handle/2S6PX9GI/25267]  
专题中科院武汉岩土力学所
作者单位1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Xiaohongshan 2, Wuhan 430071, Peoples R China
2.CSIRO Energy, Australian Resources Res Ctr, 26 Dick Perry Ave, Kensington, WA 6151, Australia
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Xu, Liang,Li, Qi,Myers, Matthew,et al. The effects of porosity and permeability changes on simulated supercritical CO2 migration front in tight glutenite under different effective confining pressures from 1.5 MPa to 21.5 MPa[J]. GREENHOUSE GASES-SCIENCE AND TECHNOLOGY,2020(-):18.
APA Xu, Liang.,Li, Qi.,Myers, Matthew.,Tan, Yongsheng.,He, Miao.,...&Li, Xiaochun.(2020).The effects of porosity and permeability changes on simulated supercritical CO2 migration front in tight glutenite under different effective confining pressures from 1.5 MPa to 21.5 MPa.GREENHOUSE GASES-SCIENCE AND TECHNOLOGY(-),18.
MLA Xu, Liang,et al."The effects of porosity and permeability changes on simulated supercritical CO2 migration front in tight glutenite under different effective confining pressures from 1.5 MPa to 21.5 MPa".GREENHOUSE GASES-SCIENCE AND TECHNOLOGY .-(2020):18.

入库方式： OAI收割

来源：武汉岩土力学研究所

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