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Leakage and Sepage of CO2 from Geologic Carbon SequestrationSites: CO2 Migration into Surface Water

Description: Geologic carbon sequestration is the capture of anthropogenic carbon dioxide (CO{sub 2}) and its storage in deep geologic formations. One of the concerns of geologic carbon sequestration is that injected CO{sub 2} may leak out of the intended storage formation, migrate to the near-surface environment, and seep out of the ground or into surface water. In this research, we investigate the process of CO{sub 2} leakage and seepage into saturated sediments and overlying surface water bodies such as … more
Date: June 17, 2005
Creator: Oldenburg, Curt M. & Lewicki, Jennifer L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Comments on Economides and Ehlig-Economides,"Sequestering carbon dioxide in a closed underground volume," SPE 124430, October 2009

Description: The paper examines the pressure increase resulting from injection of CO2 into a 1D radial system with closed boundaries. The finding is that unacceptably high pressures are obtained when only 1% or less of the pore volume is occupied by injected CO2. These results are used to make the general conclusion that large-scale CCS is not feasible.
Date: October 22, 2009
Creator: Oldenburg, Curt; Pruess, Karsten; Birkholzer, Jens & Doughty, Christine
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Probability Estimation of CO2 Leakage Through Faults at Geologic Carbon Sequestration Sites

Description: Leakage of CO{sub 2} and brine along faults at geologic carbon sequestration (GCS) sites is a primary concern for storage integrity. The focus of this study is on the estimation of the probability of leakage along faults or fractures. This leakage probability is controlled by the probability of a connected network of conduits existing at a given site, the probability of this network encountering the CO{sub 2} plume, and the probability of this network intersecting environmental resources that m… more
Date: November 1, 2008
Creator: Zhang, Yingqi; Oldenburg, Curt; Finsterle, Stefan; Jordan, Preston & Zhang, Keni
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A Combined Saline Formation and Gas Reservoir CO2 Injection Pilotin Northern California

Description: A geologic sequestration pilot in the Thornton gas field in Northern California, USA involves injection of up to 4000 tons of CO{sub 2} into a stacked gas and saline formation reservoir. Lawrence Berkeley National Laboratory (LBNL) is leading the pilot test in collaboration with Rosetta Resources, Inc. and Calpine Corporation under the auspices of the U.S. Department of Energy and California Energy Commission's WESTCARB, Regional Carbon Sequestration Partnership. The goals of the pilot include:… more
Date: April 28, 2006
Creator: Trautz, Robert; Myer, Larry; Benson, Sally; Oldenburg, Curt; Daley, Thomas & Seeman, Ed
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Integrated modeling and field study of potential mechanisms forinduced seismicity at The Geysers Goethermal Field, California

Description: In this paper, we present progress made in a study aimed atincreasing the understanding of the relative contributions of differentmechanisms that may be causing the seismicity occurring at The Geysersgeothermal field, California. The approach we take is to integrate: (1)coupled reservoir geomechanical numerical modeling, (2) data fromrecently upgraded and expanded NCPA/Calpine/LBNL seismic arrays, and (3)tens of years of archival InSAR data from monthly satellite passes. Wehave conducted a coup… more
Date: June 7, 2006
Creator: Rutqvist, Jonny; Majer, Ernie; Oldenburg, Curt; Peterson, John & Vasco, Don
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Mixing of CO2 and CH4 in gas reservoirs: Code comparison studies

Description: Simulation of the mixing of carbon dioxide and methane is critical to modeling gas reservoir processes induced by the injection of carbon dioxide. We have compared physical property estimates and simulation results of the mixing of carbon dioxide and methane gases from four numerical simulation codes. Test Problem 1 considers molecular diffusion in a one-dimensional stably stratified system. Test Problem 2 considers molecular diffusion and advection in an unstable two-dimensional system. In gen… more
Date: July 22, 2002
Creator: Oldenburg, Curt; Law, D.H.-S.; Le Gallo, Y. & White, S.P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Intercomparison of numerical simulation codes for geologic disposal of CO2

Description: Numerical simulation codes were exercised on a suite of eight test problems that address CO2 disposal into geologic storage reservoirs, including depleted oil and gas reservoirs, and brine aquifers. Processes investigated include single- and multi-phase flow, gas diffusion, partitioning of CO2 into aqueous and oil phases, chemical interactions of CO2 with aqueous fluids and rock minerals, and mechanical changes due to changes in fluid pressures. Representation of fluid properties was also exami… more
Date: November 27, 2002
Creator: Pruess, Karsten; Garcia, Julio; Kovscek, Tony; Oldenburg, Curt; Rutqvist, Jonny; Steefel, Carl et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Shear-slip analysis in multiphase fluid-flow reservoir engineeringap plications using TOUGH-FLAC

Description: This paper describes and demonstrates the use of the coupledTOUGH-FLAC simulator for geomechanical shear-slip (failure) analysis inmultiphase fluid-flow reservoir-engineering applications. Two approachesfor analyzing shear-slip are described, one using continuum stress-strainanalysis and another using discrete fault analysis. The use of shear-slipanalysis in TOUGH-FLAC is demonstrated on application examples related toCO2 sequestration and geothermal energy extraction. In the case of CO2sequest… more
Date: January 15, 2006
Creator: Rutqvist, Jonny; Birkholzer, Jens; Cappa, Frederic; Oldenburg,Curt & Tsang, Chin-Fu
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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