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Environmental Engineering

CO2 Summit II: Technologies and Opportunities

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Using Geologic Co2 Storage For Enhanced Geothermal Energy And Water Recovery And Energy Storage, Thomas Buscheck, Jeffrey Bielicki, Jimmy Randolph Apr 2016

Using Geologic Co2 Storage For Enhanced Geothermal Energy And Water Recovery And Energy Storage, Thomas Buscheck, Jeffrey Bielicki, Jimmy Randolph

CO2 Summit II: Technologies and Opportunities

Reductions in CO2 emissions at a scale consistent with limiting the increase in the global average temperature to below 2oC above pre-industrial levels requires a range of measures, including increased use of renewable and low-carbon energy and reduced CO2 intensity of fossil energy use, with each of these measures having major deployment barriers. The variability of the predominant renewable resources (wind and solar) requires major advances in utility-scale diurnal-to-seasonal energy storage. Base-load energy, such as nuclear, that cannot be cycled during periods of over-generation will have difficulty co-existing on electric grids with a large presence of variable renewables. …


Geologic Co2 Storage Using Pre-Injection Brine Production In Tandem Reservoirs: A Strategy For Improved Storage Performance And Enhanced Water Recovery, Thomas Buscheck, Jeffrey Bielicki, Joshua White, Yunwei Sun, Yue Hao, William Bourcier, Susan Carroll, Roger Aines Apr 2016

Geologic Co2 Storage Using Pre-Injection Brine Production In Tandem Reservoirs: A Strategy For Improved Storage Performance And Enhanced Water Recovery, Thomas Buscheck, Jeffrey Bielicki, Joshua White, Yunwei Sun, Yue Hao, William Bourcier, Susan Carroll, Roger Aines

CO2 Summit II: Technologies and Opportunities

Deployment barriers for CO2 capture, utilization, and storage (CCUS) in saline reservoirs can be grouped under three categories: (1) net cost (after accounting for utilization benefits); (2) water intensity of CO2 capture, and (3) uncertainty about storage capacity and permanence. The third category is often considered to be the most challenging. Overpressure, which is fluid pressure that exceeds the original reservoir pressure due to CO2 injection, is the limiting metric for storage capacity and permanence because it drives key physical risks: induced seismicity, caprock fracture, and CO2 leakage. Variables that control overpressure include: (1) the quantity …