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Variations in volatiles in magma bodies based on studies of melt inclusions

Description: Knowledge of volatile concentrations in magmas are important in the prediction of explosive volcanism, and contribute to the understanding of the carbon dioxide budget of the atmosphere. Some important variables that are controlled by volatiles are: crystallization temperature of phases, composition of liquids minimum, and viscosity. Volatiles are also catalysts for reactions.
Date: June 15, 1989
Creator: Vogel, T. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Health, Safety, and Environmental Screening and Ranking Frameworkfor Geologic CO2 Storage Site Selection

Description: This report describes a screening and ranking framework(SRF) developed to evaluate potential geologic carbon dioxide (CO2)storage sites on the basis of health, safety, and environmental (HSE)risk arising from possible CO2 leakage. The approach is based on theassumption that HSE risk due to CO2 leakage is dependent on three basiccharacteristics of a geologic CO2 storage site: (1) the potential forprimary containment by the target formation, (2) the potential forsecondary containment if the prima… more
Date: March 15, 2006
Creator: Oldenburg, Curtis M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Flow Instabilities During Injection of CO2 into SalineAquifers

Description: Injection of carbon dioxide (CO{sub 2}) into saline aquifers has been proposed as a means to reduce greenhouse gas emissions (geological carbon sequestration). The injection process can be classified as immiscible displacement of an aqueous phase by a less dense and less viscous gas phase. Under disposal conditions (supercritical CO{sub 2}) the viscosity of carbon dioxide can be less than the viscosity of the aqueous phase by a factor of 15. Because of the lower viscosity, the CO{sub 2} displac… more
Date: April 15, 2003
Creator: Garcia, Julio E. & Pruess, Karsten
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Six-week time series of eddy covariance CO2 flux at Mammoth Mountain, California: performance evaluation and role of meteorological forcing

Description: CO{sub 2} and heat fluxes were measured over a six-week period (09/08/2006 to 10/24/2006) by the eddy covariance (EC) technique at the Horseshoe Lake tree kill (HLTK), Mammoth Mountain, CA, a site with complex terrain and high, spatially heterogeneous CO{sub 2} emission rates. EC CO{sub 2} fluxes ranged from 218 to 3500 g m{sup -2} d{sup -1} (mean = 1346 g m{sup -2} d{sup -1}). Using footprint modeling, EC CO{sub 2} fluxes were compared to CO{sub 2} fluxes measured by the chamber method on a gr… more
Date: October 15, 2007
Creator: Lewicki, Jennifer; Lewicki, J. L.; Fischer, M. L. & Hilley, G. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Well blowout rates and consequences in California Oil and Gas District 4 from 1991 to 2005: Implications for geological storage of carbon dioxide

Description: Well blowout rates in oil fields undergoing thermally enhanced recovery (via steam injection) in California Oil and Gas District 4 from 1991 to 2005 were on the order of 1 per 1,000 well construction operations, 1 per 10,000 active wells per year, and 1 per 100,000 shut-in/idle and plugged/abandoned wells per year. This allows some initial inferences about leakage of CO2 via wells, which is considered perhaps the greatest leakage risk for geological storage of CO2. During the study period, 9% o… more
Date: May 15, 2008
Creator: Jordan, Preston; Jordan, Preston D. & Benson, Sally M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The role of optimality in characterizing CO2 seepage from geological carbon sequestration sites

Description: Storage of large amounts of carbon dioxide (CO{sub 2}) in deep geological formations for greenhouse gas mitigation is gaining momentum and moving from its conceptual and testing stages towards widespread application. In this work we explore various optimization strategies for characterizing surface leakage (seepage) using near-surface measurement approaches such as accumulation chambers and eddy covariance towers. Seepage characterization objectives and limitations need to be defined carefully … more
Date: September 15, 2008
Creator: Cortis, Andrea; Oldenburg, Curtis M. & Benson, Sally M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Detection of greenhouse-gas-induced climatic change

Description: The aims of the US Department of Energy's Carbon Dioxide Research Program are to improve assessments of greenhouse-gas-induced climatic change and to define and reduce uncertainties through selected research. This project will address: The regional and seasonal details of the expected climatic changes; how rapidly will these changes occur; how and when will the climatic effects of CO[sub 2] and other greenhouse gases be first detected; and the relationships between greenhouse-gas-induced climat… more
Date: July 15, 1992
Creator: Wigley, T.M.L. & Jones, P.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Microalgae as a source of liquid fuels. Final technical report. [200 references]

Description: The economics of liquid-fuels production from microalgae was evaluated. A detailed review of published economic analyses of microalgae biomass production revealed wide variations in the published costs, which ranged from several dollars per pound for existing commercial health-food production in the Far East, to less than .05/lb costs projected for microalgae biomass for fuel conversion. As little design information or specific cost data has been published, a credible cost estimate required the… more
Date: May 15, 1982
Creator: Benemann, J. R.; Goebel, R. P.; Weissman, J. C. & Augenstein, D. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Regulation of Carbon Dioxide (CO2) Sequestration Pipelines: Jurisdictional Issues

Description: This report reviews the history of pipeline regulation, including the limited history of interstate CO2 pipeline regulation, and examines the regulatory missions of FERC, the STB, and other agencies. The report discusses possible responses to perceived jurisdictional uncertainties under existing law as well as potential legislative steps intended to address any potential regulatory “gap” in interstate CO2 pipeline jurisdiction.
Date: April 15, 2008
Creator: Vann, Adam & Parfomak, Paul W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Post waterflood CO{sub 2} miscible flood in light oil, fluvial: Dominated deltaic reservoir. First quarterly technical progress report, Fiscal year 1994, October 1, 1993--December 31, 1993

Description: Production from the Port Neches CO{sub 2} project was initiated on December 6, 1993 after having been shut-in since the start of CO{sub 2} injection on September 22, 1993 to allow reservoir pressure to build. Rates were established at 236 barrels of oil per day (BOPD) from two wells in the 235 acre waterflood project area, which before project initiation had produced only 80 BOPD from the entire area. These wells are flowing large amounts of fluid due to the high reservoir pressure and their oi… more
Date: January 15, 1994
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Activity of pile gas. Rough draft

Description: This memorandum concerns the relative activities of Argon 41 and Nitrogen 16 in the pile gas composed of 95 percent carbon dioxide and 5 percent air. The memorandum is dated November 16, 1950. (JL)
Date: November 15, 1950
Creator: Roesch, W. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Carbon dioxide for pH adjustment 100-K Reactors

Description: This report presents the results of a recent analysis to determine if there is a practical method for using carbon dioxide for pH adjustment at the 100-K Reactors. Carbon dioxide could be recovered from the boiler stack gas and introduced into the K Reactor process water. The approximately $240,000 installation cost would be repaid in about one year by the reduction of sulfuric acid costs. The proposed system would consist of a blower, a purification system, and a distribution system for conduc… more
Date: December 15, 1964
Creator: Young, J. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Post waterflood CO{sub 2} miscible flood in light oil, fluvial dominated deltaic reservoir. Third quarterly technical progress report, September 15, 1992--June 30, 1993

Description: Texaco`s objective on this project has been to utilize all available technologies, and to develop new ones, to design a CO{sub 2} flood process which is cost effective and can be applied to many other reservoirs throughout the United States. This project will determine the recovery efficiency of CO{sub 2} floods in waterflooded and partial waterdrive reservoirs. A PC-based CO{sub 2} screening model will be developed and a database will be generated to show the utility of this technology through… more
Date: July 15, 1993
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Changes in the flux of carbon between plants and soil microorganisms at elevated CO{sub 2}: Physiological processes with ecosystem-level implications. Progress report

Description: Our ability to interpret ecosystem response to elevated atmospheric CO{sub 2} is contingent on understanding and integrating a complex of physiological and ecological processes. However, we have a limited understanding of the combined effects of changes in plant carbon (C) allocation, microbial activity, and nitrogen (N) dynamics on the long-term response of terrestrial ecosystems to elevated CO{sub 2}. Individually, these factors are potent modifiers of C and N dynamics, and an in depth unders… more
Date: May 15, 1994
Creator: Zak, D. R. & Pregitzer, K. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Thermal dissociation behavior and dissociation enthalpies of methane-carbon dioxide mixed hydrates

Description: Replacement of methane with carbon dioxide in hydrate has been proposed as a strategy for geologic sequestration of carbon dioxide (CO{sub 2}) and/or production of methane (CH{sub 4}) from natural hydrate deposits. This replacement strategy requires a better understanding of the thermodynamic characteristics of binary mixtures of CH{sub 4} and CO{sub 2} hydrate (CH{sub 4}-CO{sub 2} mixed hydrates), as well as thermophysical property changes during gas exchange. This study explores the thermal d… more
Date: February 15, 2011
Creator: Kwon, T.H.; Kneafsey, T.J. & Rees, E.V.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Formation and retention of methane in coal

Description: The formation and retention of methane in coalbeds was studied for ten Utah coal samples, one Colorado coal sample and eight coal samples from the Argonne Premium Coal Sample Bank.Methane gas content of the Utah and Colorado coals varied from zero to 9 cm{sup 3}/g. The Utah coals were all high volatile bituminous coals. The Colorado coal was a gassy medium volatile bituminous coal. The Argonne coals cover a range or rank from lignite to low volatile bituminous coal and were used to determine th… more
Date: May 15, 1992
Creator: Hucka, V. J.; Bodily, D. M. & Huang, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Research on high-energy storage for laser amplifiers. Final report, 16 January 1974--15 January 1975

Description: Research to find appropriate non-equilibrium storage media that can be efficiently pumped for high energy lasers is described. Four tasks in the research program are described: (1) Measure, as a function of wavelength, the quantum yield of O(/sup 1/S) production from N/sub 2/O photolysis between 1100 and 1500 A. (2) Measure the temperature dependence of O(/sup 1/S) deactivation by N/sub 2/O. (3) Measure the yield of efficient quenching agents for O(/sup 1/S) (such as NO) under the conditions of… more
Date: January 15, 1975
Creator: Black, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Measuring and Modeling Fault Density for Plume-Fault Encounter Probability Estimation

Description: Emission of carbon dioxide from fossil-fueled power generation stations contributes to global climate change. Storage of this carbon dioxide within the pores of geologic strata (geologic carbon storage) is one approach to mitigating the climate change that would otherwise occur. The large storage volume needed for this mitigation requires injection into brine-filled pore space in reservoir strata overlain by cap rocks. One of the main concerns of storage in such rocks is leakage via faults. In … more
Date: May 15, 2011
Creator: Jordan, P.D.; Oldenburg, C.M. & Nicot, J.-P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Developing Information on Energy Savings and Associated Costs and Benefits of Energy Efficient Emerging Technologies Applicable in California

Description: Implementation and adoption of efficient end-use technologies have proven to be one of the key measures for reducing greenhouse gas (GHG) emissions throughout the industries. In many cases, implementing energy efficiency measures is among one of the most cost effective investments that the industry could make in improving efficiency and productivity while reducing carbon dioxide (CO2) emissions. Over the years, there have been incentives to use resources and energy in a cleaner and more efficie… more
Date: December 15, 2010
Creator: Xu, Tengfang; Slaa, Jan Willem & Sathaye, Jayant
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Monitoring the response of the upper troposphere/lower stratosphere to a greenhouse gas scenario. Final progress report, May 1, 1990--December 15, 1992

Description: During the past two years a system has been under development to contribute to this monitoring process by making measurement of the downwelling infrared radiance field at moderate spectral resolution. Sensitivity of the measurements to the presence of cirrus cloudiness, and effective particle size in cirrus clouds has been demonstrated. Sensitivity of the measurements to concentration of C0{sub 2} and to the gross temperature structure of a 2CO{sub 2} atmosphere have been modeled, and measureme… more
Date: December 15, 1992
Creator: Davis, J. M. & Cox, S. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Formation and retention of methane in coal. Final report

Description: The formation and retention of methane in coalbeds was studied for ten Utah coal samples, one Colorado coal sample and eight coal samples from the Argonne Premium Coal Sample Bank.Methane gas content of the Utah and Colorado coals varied from zero to 9 cm{sup 3}/g. The Utah coals were all high volatile bituminous coals. The Colorado coal was a gassy medium volatile bituminous coal. The Argonne coals cover a range or rank from lignite to low volatile bituminous coal and were used to determine th… more
Date: May 15, 1992
Creator: Hucka, V. J.; Bodily, D. M. & Huang, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Sampling Artifacts from Conductive Silicone Tubing

Description: We report evidence that carbon impregnated conductive silicone tubing used in aerosol sampling systems can introduce two types of experimental artifacts: 1) silicon tubing dynamically absorbs carbon dioxide gas, requiring greater than 5 minutes to reach equilibrium and 2) silicone tubing emits organic contaminants containing siloxane that adsorb onto particles traveling through it and onto downstream quartz fiber filters. The consequence can be substantial for engine exhaust measurements as bot… more
Date: May 15, 2009
Creator: Timko, Michael T.; Yu, Zhenhong; Kroll, Jesse; Jayne, John T.; Worsnop, Douglas R.; Miake-Lye, Richard C. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Numerical investigation for the impact of CO2 geologic sequestration on regional groundwater flow

Description: Large-scale storage of carbon dioxide in saline aquifers may cause considerable pressure perturbation and brine migration in deep rock formations, which may have a significant influence on the regional groundwater system. With the help of parallel computing techniques, we conducted a comprehensive, large-scale numerical simulation of CO{sub 2} geologic storage that predicts not only CO{sub 2} migration, but also its impact on regional groundwater flow. As a case study, a hypothetical industrial… more
Date: April 15, 2009
Creator: Yamamoto, H.; Zhang, K.; Karasaki, K.; Marui, A.; Uehara, H. & Nishikawa, N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Collaborative Research: Evolution of Pore Structure and Permeability of Rocks Under Hydrothermal Conditions

Description: The physical and transport properties of porous rocks can be altered by a variety of diagenetic, metamorphic, and tectonic processes, and the changes that result are of critical importance to such industrial applications as resource recovery, carbon dioxide sequestration, and waste isolation in geologic formations. These inter-relationships between rocks, pore fluids, and deformation are also the key to understanding many natural processes, including: dynamic metamorphism, fault mechanics, faul… more
Date: April 15, 2007
Creator: Zhu, Wenlu & Evans, J. Brian
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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