Integrating CO2 Storage with Geothermal Resources for Dispatchable Renewable Electricity

Buscheck, Thomas A.; Bielicki, Jeffrey M.; Chen, Mingjie; Sun, Yunwei; Ye, Hao; Edmunds, T; Saar, Martin O.; Randolph, Jimmy B.

doi:10.1016/j.egypro.2014.11.796

Cited by 22 publications

(12 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Buscheck et al . [] devised a system where energy is produced from the subsurface using CO 2 as the working gas. The system is comprised of a set of horizontal wells arranged in concentric rings, with both CO 2 and brine circulated through the system using combinations of injection and extraction wells.…”

Section: Practical Models and Their Applicationsmentioning

confidence: 99%

Status of CO₂storage in deep saline aquifers with emphasis on modeling approaches and practical simulations

et al. 2015

View full text Add to dashboard Cite

Carbon capture and storage (CCS) is the only viable technology to mitigate carbon emissions while allowing continued large-scale use of fossil fuels. The storage part of CCS involves injection of carbon dioxide, captured from large stationary sources, into deep geological formations. Deep saline aquifers have the largest identified storage potential, with estimated storage capacity sufficient to store emissions from large stationary sources for at least a century. This makes CCS a potentially important bridging technology in the transition to carbon-free energy sources. Injection of CO 2 into deep saline aquifers leads to a multicomponent, multiphase flow system, in which geomechanics, geochemistry, and nonisothermal effects may be important. While the general system can be highly complex and involve many coupled, nonlinear partial differential equations, the underlying physics can sometimes lead to important simplifications. For example, the large density difference between injected CO 2 and brine may lead to relatively fast buoyant segregation, making an assumption of vertical equilibrium reasonable. Such simplifying assumptions lead to a range of simplified governing equations whose solutions have provided significant practical insights into system behavior, including improved estimates of storage capacity, easy-to-compute estimates of CO 2 spatial migration and pressure response, and quantitative estimates of leakage risk. When these modeling studies are coupled with observations from well-characterized injection operations, understanding of the overall system behavior is enhanced significantly. This improved understanding shows that, while economic and policy challenges remain, CO 2 storage in deep saline aquifers appears to be a viable technology and can contribute substantially to climate change solutions.

show abstract

Section: Practical Models and Their Applicationsmentioning

confidence: 99%

Status of CO₂storage in deep saline aquifers with emphasis on modeling approaches and practical simulations

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Another potential area for large-scale CCS implementation is in the context of dispatchable energy to deal with intermittency of renewables such as wind and solar. Integration of CCS could be part of a more creative set of strategies involving broader approaches to subsurface energy storage and management [Bourcier et al, 2011;Buscheck et al, 2012Buscheck et al, , 2013Buscheck et al, , 2014Oldenburg and Pan, 2013]. Furthermore, future negative emissions scenarios often include CCS as an essential component [Tollefson, 2015;Rockstrom et al, 2017].…”

Section: The Future Of Ccsmentioning

confidence: 99%

Geological storage of captured carbon dioxide as a large‐scale carbon mitigation option

Celia

2017

Water Resources Research

View full text Add to dashboard Cite

Carbon capture and storage (CCS), involves capture of CO2 emissions from power plants and other large stationary sources and subsequent injection of the captured CO2 into deep geological formations. This is the only technology currently available that allows continued use of fossil fuels while simultaneously reducing emissions of CO2 to the atmosphere. Although the subsurface injection and subsequent migration of large amounts of CO2 involve a number of challenges, many decades of research in the earth sciences, focused on fluid movement in porous rocks, provides a strong foundation on which to analyze the system. These analyses indicate that environmental risks associated with large CO2 injections appear to be manageable.

show abstract

“…Unfortunately, the number of sites that are suitable for this type of energy storage is limited. An analogous approach would be to store compressed air or another compressible fluid in deep sedimentary formations (Buscheck et al , 2014; Hartmann et al , 2012). When the energy is needed, the fluid could be released to run generators.…”

Section: Energy Storage In Sedimentary Formationsmentioning

confidence: 99%

Mitigating Climate Change at the Carbon Water Nexus: A Call to Action for the Environmental Engineering Community

Clarens

Peters

2016

Environmental Engineering Science

View full text Add to dashboard Cite

Environmental engineers have played a critical role in improving human and ecosystem health over the past several decades. These contributions have focused on providing clean water and air as well as managing waste streams and remediating polluted sites. As environmental problems have become more global in scale and more deeply entrenched in sociotechnical systems, the discipline of environmental engineering must grow to be ready to respond to the challenges of the coming decades. Here we make the case that environmental engineers should play a leadership role in the development of climate change mitigation technologies at the carbon-water nexus (CWN). Climate change, driven largely by unfettered emissions of fossil carbon into the atmosphere, is a far-reaching and enormously complex environmental risk with the potential to negatively affect food security, human health, infrastructure, and other systems. Solving this problem will require a massive mobilization of existing and innovative new technology. The environmental engineering community is uniquely positioned to do pioneering work at the CWN using a skillset that has been honed, solving related problems. The focus of this special issue, on “The science and innovation of emerging subsurface energy technologies,” provides one example domain within which environmental engineers and related disciplines are beginning to make important contributions at the CWN. In this article, we define the CWN and describe how environmental engineers can bring their considerable expertise to bear in this area. Then we review some of the topics that appear in this special issue, for example, mitigating the impacts of hydraulic fracturing and geologic carbon storage, and we provide perspective on emergent research directions, for example, enhanced geothermal energy, energy storage in sedimentary formations, and others.

show abstract

Integrating CO2 Storage with Geothermal Resources for Dispatchable Renewable Electricity

Cited by 22 publications

References 26 publications

Status of CO₂storage in deep saline aquifers with emphasis on modeling approaches and practical simulations

Status of CO₂storage in deep saline aquifers with emphasis on modeling approaches and practical simulations

Geological storage of captured carbon dioxide as a large‐scale carbon mitigation option

Mitigating Climate Change at the Carbon Water Nexus: A Call to Action for the Environmental Engineering Community

Contact Info

Product

Resources

About

Integrating CO2 Storage with Geothermal Resources for Dispatchable Renewable Electricity

Cited by 22 publications

References 26 publications

Status of CO2storage in deep saline aquifers with emphasis on modeling approaches and practical simulations

Status of CO2storage in deep saline aquifers with emphasis on modeling approaches and practical simulations

Geological storage of captured carbon dioxide as a large‐scale carbon mitigation option

Mitigating Climate Change at the Carbon Water Nexus: A Call to Action for the Environmental Engineering Community

Contact Info

Product

Resources

About

Status of CO₂storage in deep saline aquifers with emphasis on modeling approaches and practical simulations

Status of CO₂storage in deep saline aquifers with emphasis on modeling approaches and practical simulations