气候变化领域集成服务门户(CCPortal): CO2-Brine Substitution Effects on Ultrasonic Wave Propagation Through Sandstone With Oblique Fractures

CCPortal

DOI	10.1029/2020GL088439
	CO2-Brine Substitution Effects on Ultrasonic Wave Propagation Through Sandstone With Oblique Fractures
	Falcon-Suarez I.H.; Papageorgiou G.; Jin Z.; Muñoz-Ibáñez A.; Chapman M.; Best A.I.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:16
英文摘要	Seismic monitoring of injected CO2 plumes in fractured storage reservoirs relies on accurate knowledge of the physical mechanisms governing elastic wave propagation, as described by appropriate, validated rock physics models. We measured laboratory ultrasonic velocity and attenuation of P and S waves, and electrical resistivity, of a synthetic fractured sandstone with obliquely aligned (penny-shaped) fractures, undergoing a brine-CO2 flow-through test at simulated reservoir pressure and temperature. Our results show systematic differences in the dependence of velocity and attenuation on fluid saturation between imbibition and drainage episodes, which we attribute to uniform and patchy fluid distributions, respectively, and the relative permeability of CO2 and brine in the rock. This behavior is consistent with predictions from a multifluid rock physics model, facilitating the identification of the dispersive mechanisms associated with wave-induced fluid flow in fractured systems at seismic scales. ©2020. The Authors.
英文关键词	Carbon dioxide; Flow of fluids; Sandstone; Seismology; Shear waves; Wave propagation; Dispersive mechanisms; Flow-through tests; Fractured sandstones; Relative permeability; Reservoir pressures; Storage reservoirs; Substitution effect; Wave-induced fluid flow; Fracture; carbon dioxide; elastic wave; fluid flow; fracture; imbibition; model validation; sandstone; saturation; ultrasonics; wave propagation
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169884
作者单位	National Oceanography Centre, University of Southampton Waterfront Campus, Southampton, United Kingdom; School of Geosciences, University of Edinburgh, Grant Institute, Edinburgh, United Kingdom; Institute of Geoscience and Petroleum, NTNU, Trondheim, Norway; School of Civil Engineering, University of A Coruña, A Coruña, Spain
推荐引用方式 GB/T 7714	Falcon-Suarez I.H.,Papageorgiou G.,Jin Z.,et al. CO2-Brine Substitution Effects on Ultrasonic Wave Propagation Through Sandstone With Oblique Fractures[J],2020,47(16).
APA	Falcon-Suarez I.H.,Papageorgiou G.,Jin Z.,Muñoz-Ibáñez A.,Chapman M.,&Best A.I..(2020).CO2-Brine Substitution Effects on Ultrasonic Wave Propagation Through Sandstone With Oblique Fractures.Geophysical Research Letters,47(16).
MLA	Falcon-Suarez I.H.,et al."CO2-Brine Substitution Effects on Ultrasonic Wave Propagation Through Sandstone With Oblique Fractures".Geophysical Research Letters 47.16(2020).