Feasibility of Geophysical Monitoring of Carbon-Sequestrated Deep Saline Aquifers

doi:10.2172/1158900

GSTDTAP > 地球科学

DOI	10.2172/1158900
报告编号	None
来源ID	OSTI ID: 1158900
	Feasibility of Geophysical Monitoring of Carbon-Sequestrated Deep Saline Aquifers
	Mallick, Subhashis; Alvarado, Vladimir
	2013-09-30
出版年	2013
语种	英语
国家	美国
领域	地球科学
英文摘要	As carbon dioxide (CO{sub 2}) is sequestered from the bottom of a brine reservoir and allowed to migrate upward, the effects of the relative permeability hysteresis due to capillary trapping and buoyancy driven migration tend to make the reservoir patchy saturated with different fluid phases over time. Seismically, such a patchy saturated reservoir induces an effective anisotropic behavior whose properties are primarily dictated by the nature of the saturation of different fluid phases in the pores and the elastic properties of the rock matrix. By combining reservoir flow simulation and modeling with seismic modeling, it is possible to derive these effective anisotropic properties, which, in turn, could be related to the saturation of CO{sub 2} within the reservoir volume any time during the post-injection scenario. Therefore, if time-lapse seismic data are available and could be inverted for the effective anisotropic properties of the reservoir, they, in combination with reservoir simulation could potentially predict the CO{sub 2} saturation directly from the time-lapse seismic data. It is therefore concluded that the time-lapse seismic data could be used to monitor the carbon sequestrated saline reservoirs. But for its successful implementation, seismic modeling and inversion methods must be integrated with the reservoir simulations. In addition, because CO{sub 2} sequestration induces an effective anisotropy in the sequestered reservoir and anisotropy is best detected using multicomponent seismic data compared to single component (P-wave) data, acquisition, processing, and analysis is multicomponent seismic data is recommended for these time-lapse studies. Finally, a successful implementation of using time-lapse seismic data for monitoring the carbon sequestrated saline reservoirs will require development of a robust methodology for inverting multicomponent seismic data for subsurface anisotropic properties.
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来源平台	US Department of Energy (DOE)
引用统计
文献类型	科技报告
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/6116
专题	地球科学
推荐引用方式 GB/T 7714	Mallick, Subhashis,Alvarado, Vladimir. Feasibility of Geophysical Monitoring of Carbon-Sequestrated Deep Saline Aquifers,2013.