Geomechanical Simulation of CO{sub 2} Leakage and Cap Rock Remediation

doi:10.2172/1113759

GSTDTAP > 地球科学

DOI	10.2172/1113759
报告编号	None
来源ID	OSTI ID: 1113759
	Geomechanical Simulation of CO{sub 2} Leakage and Cap Rock Remediation
	Nygaard, Runar; Bai, Baojun; Eckert, Andreas
	2012-09-30
出版年	2012
语种	英语
国家	美国
领域	地球科学
英文摘要	CO{sub 2} sequestration into porous and permeable brine filled aquifers is seen as one of the most likely near-term solutions for reducing greenhouse gases. Safely storing injected CO{sub 2}, which is less dense than water, requires trapping the CO{sub 2} under an impermeable rock which would act as a seal. One of the concerns with CO{sub 2} sequestration is the generation of new fractures or reactivation of existing fractures and faults caused by CO{sub 2} injection into the sealing formation. Mitigation strategies must be developed to remediate potentially leaking faults or fractures. This project evaluated potential storage scenarios in the state of Missouri and developed coupled reservoir and geomechanic simulations to identify storage potential and leakage risks. Further, several injectable materials used to seal discontinuities were evaluated under subsurface conditions. The four sealant materials investigated were paraffin wax, silica based gel, polymer based gel, and micro-cement, which all significantly reduced the fracture permeability. However, the micro-cement was the most effective sealing agent and the only sealant able to withstand the large differential pressure caused by CO{sub 2} or brine injection and create a strong seal to prevent further fracturing.
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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/5724
专题	地球科学
推荐引用方式 GB/T 7714	Nygaard, Runar,Bai, Baojun,Eckert, Andreas. Geomechanical Simulation of CO{sub 2} Leakage and Cap Rock Remediation,2012.