Impact of Micro-to Meso-scale Fractures on Sealing Behavior of Argillaceous Cap Rocks For CO<sub>2</sub> Sequestration

doi:10.2172/1302338

GSTDTAP > 地球科学

DOI	10.2172/1302338
报告编号	USU-DOE--0004991-1
来源ID	OSTI ID: 1302338
	Impact of Micro-to Meso-scale Fractures on Sealing Behavior of Argillaceous Cap Rocks For CO₂ Sequestration
	Evans, James (ORCID:0000000221813866)
	2016-08-01
出版年	2016
页数	107
语种	英语
国家	美国
领域	地球科学
英文摘要	This multi-disciplinary project evaluated seal lithologies for the safety and security of long-term geosequestration of CO₂. We used integrated studies to provide qualitative risk for potential seal failure; we integrated data sets from outcrop, core, geochemical analysis, rock failure properties from mechanical testing, geophysical wireline log analysis, and geomechanical modeling to understand the effects of lithologic heterogeneity and changing mechanical properties have on the mechanical properties of the seal. The objectives of this study were to characterize cap rock seals using natural field analogs, available drillhole logging data and whole-rock core, geochemical and isotopic analyses. Rock deformation experiments were carried out on collected samples to develop better models of risk estimation for potential cap rock seal failure. We also sampled variably faulted and fractured cap rocks to examine the impacts of mineralization and/or alteration on the mechanical properties. We compared CO₂ reacted systems to non-CO₂ reacted seal rock types to determine response of each to increased pore fluid pressures and potential for the creation of unintentional hydrofractures at depth.
英文关键词	CO2 seal integrity bypass storage
URL	查看原文
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/7272
专题	地球科学
推荐引用方式 GB/T 7714	Evans, James . Impact of Micro-to Meso-scale Fractures on Sealing Behavior of Argillaceous Cap Rocks For CO₂ Sequestration,2016.