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Geotechnical Properties of Sediments From North Pacific and Northern Bermuda Rise

Description: Studies of geotechnical properties for the Sub-seabed Disposal Program have been oriented toward sediment characterization related to effectiveness as a containment media and determination of detailed engineering behavior. Consolidation tests of the deeper samples in the North Pacific clays indicate that the sediment column is normally consolidated. The in-situ coefficient of permeability (k) within the cored depth of 25 meters is relatively constant at 10/sup -7/ cm/sec. Consolidated undrained… more
Date: January 1, 1980
Creator: Silva, A. J.; Laine, E. P.; Lipkin, J.; Heath, G. R. & Akers, S. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Fine particle clay catalysts for coal liquefaction

Description: The efficient production of environmentally acceptable distillate fuels requires catalysts for hydrogenation and cleavage of the coal macromolecules and removal of oxygen, nitrogen, and sulfur heteroatoms. The goal of the proposed research is to develop new catalysts for the direct liquefaction of coal. This type of catalyst consists of fine clay particles that have been treated with reagents which form pillaring structures between the aluminosilicate layers of the clay. The pillars not only ho… more
Date: January 1, 1991
Creator: Olson, E.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Clay mineralogy and depositional history of the Frio Formation in two geopressured wells, Brazoria County, Texas

Description: Twenty-three shale samples ranging in depth from 5194 ft to 13,246 ft from Gulf Oil Corporation No. 2 Texas State Lease 53034 well and 33 shale samples ranging in depth from 2185 ft to 15,592 ft from General Crude Oil Company/Department of Energy No. 1 Pleasant Bayou well were examined by x-ray techniques to determine the mineralogy of the geopressured zone in the Brazoria Fairway. Both wells have similar weight-percent trends with depth for a portion of the mineralogy. Calcite decreases, and p… more
Date: January 1, 1982
Creator: Freed, R.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Tabulation and evaluation of ion exchange data on smectites, certain zeolites and basalt

Description: An extensive search of the literature has been made for ion exchange data on smectites, certain zeolites and basalt. The data are in the form of thermodynamic equilibrium constants, corrected selectivity coefficients, and distribution coefficients. Room temperature alkali and alkaline earth metal cation ion exchange data for smectites are extensive. Correlation between the exchange free energies of alkali metal cations on Camp Berteau montmorillonite values with their Debeye-Hueckel parameter w… more
Date: May 1, 1980
Creator: Benson, L. V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Sentinel gap basalt reacted in a temperature gradient

Description: Six Basalt prisms were reacted in a controlled temperature gradient hydrothermal circulation system for two months. The prisms are centered at 72, 119, 161, 209, 270, and 310/sup 0/C. Total pressure is 1/3 kbar. All prisms show large weight loss: 5.5% to 14.9%. The matrix micropegmatite and natural nontronitic alteration readily react to clays at all temperatures. The first four prisms are coated with a Ca-smectite while the last two prisms are covered with discrete patches of K rich phengite a… more
Date: January 1, 1982
Creator: Charles, R. W. & Bayhurst, Gregory K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Subseabed disposal program annual report, January-December 1978. Volume II. Principal investigator progress reports

Description: The topics covered in this report include: geologic siting considerations for the disposal of radioactive wastes into submarine geologic formations; geologic assessment of the MPG-1 regions Central North Pacific; site mapping; geotechnical aspects of subsurface seabed disposal; heat transfer, thermal and fluid physics in the deep ocean sediments; mechanical response predictive capability; sediment-seawater interaction at 300/sup 0/C, 500 bars; stability of actinides in chloride media; cannister… more
Date: October 1, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Colloid-Facilitated Transport of Radionuclides through the Vadose Zone

Description: The main purpose of this project was to advance the basic scientific understanding of colloid and colloid-facilitated Cs transport of radionuclides in the vadose zone. We focused our research on the hydrological and geochemical conditions beneath the leaking waste tanks at the USDOE Hanford reservation. Specific objectives were (1) to determine the lability and thermodynamic stability of colloidal materials, which form after reacting Hanford sediments with simulated Hanford Tank Waste, (2) to c… more
Date: November 21, 2006
Creator: Flury, Markus; Harsh, James B.; McCarthy, John F.; Lichtner, Peter C. & Zachara, John M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Clean, premium-quality chars: Demineralized and carbon enriched

Description: The goal of this project is to develop a bench-scale procedure to produce clean, desulfurized, premium-quality chars from the Illinois basin coals. This goal is achieved by utilizing the effective capabilty of smectites in combination with methane to manipulate the char yields. The major objectives are: to determine the optimum water- ground particle size for the maximum reduction of pyrite and minerals by the selective-bitumen agglomeration process; to evaluate the type of smectite and its int… more
Date: January 3, 1992
Creator: Smith, G.V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Novel Sorbents for Coal Conversion Wastewater Treatment. [3,5-Dichlorophenol]

Description: In this report results from a study undertaken to scale-up the clay modification procedure are described. Hitherto, adsorption of toxic organics found in coal conversion wastewater onto modified clays was carried out in a batch mode utilizing small amounts of the adsorbents. A realistic evaluation of the potential of modified clays as adsorbents under field conditions necessitates the development of continuous wastewater treatment schemes requiring larger amounts of the adsorbents. Hence a need… more
Date: January 1, 1989
Creator: Fogler, H. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Mineralogical textural and compositional data on the alteration of basaltic glass from Kilauea, Hawaii to 300 degrees C: Insights to the corrosion of a borosilicate glass waste-form. [Yucca Mountain Project]

Description: Mineralogical, textural and compositional data accompanying greenschist facies metamorphism (to 300{degrees}C) of basalts of the East Rift Zone (ERZ), Kilauea, Hawaii may be evaluated relative to published and experimental results for the surface corrosion of borosilicate glass. The ERZ alteration sequence is dominated by intermittent palagonite, interlayered smectite-chlorite, chlorite, and actinolite-epidote-anhydrite. Alteration is best developed in fractures and vesicles where surface react… more
Date: January 1, 1990
Creator: Smith, D. K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Evaluation of saponite and saponite/sepiolite fluids for geothermal drilling

Description: The rheology and other properties of drilling fluids containing saponite and a saponite-sepiolite mixture as the main vicosifier have been systematically evaluated in the temperature range of 300-600{degree}F under appropriate confining pressures up to 16,000 psi. Saponite represents the magnesium analog of the clay mineral montmorillonite, which is the main constituent in conventional bentonite-based fluids. The fluid with 6% saponite exhibits a prominent viscosity enhancement at temperatures … more
Date: February 1, 1991
Creator: Guven, N.; Panfil, D. J. & Carney, L. L. (Texas Tech Univ., Lubbock, TX (USA). Dept. of Geosciences)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Basalt-radionuclide distribution coefficient determinations. FY-1979 annual report

Description: Experimental radionuclide distribution coefficients (Kd') were determined for Pomona, Flow E, Umtanum basalts, and secondary mineralization associated with Pomona basalt at 23/sup 0/, 60/sup 0/ and 150/sup 0/C. Radionuclides used were /sup 75/Se, /sup 85/Sr, /sup 99/Tc, /sup 125/I, /sup 135/Cs, /sup 226/Ra, /sup 237/Np, /sup 238/U, /sup 241/Am, and /sup 241/Pu. Solution oxygen contents were controlled by the basalt/groundwater system (Eh = 600 to 700 mV), and were high (8.2 to 8.4 mg/l) at 23/s… more
Date: September 1, 1980
Creator: Ames, L.L. & McGarrah, J.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Clay-based geothermal drilling fluids

Description: The rheological properties of fluids based on fibrous clays such as sepiolite and attapulgite have been systematically examined under conditions similar to those of geothermal wells, i.e. at elevated temperatures and pressures in environments with concentrated brines. Attapulgite- and sepiolite-based fluids have been autoclaved at temperatures in the range from 70 to 800/sup 0/F with the addition of chlorides and hydroxides of Na, K, Ca, and Mg. The rheological properties (apparent and plastic … more
Date: November 1, 1982
Creator: Guven, N.; Carney, L.L.; Lee, L.J. & Bernhard, R.P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Shale mineralogy and burial diagenesis of Frio and Vicksburg Formations in two geopressured wells, McAllen Ranch area, Hidalgo County, Texas

Description: Thirty-six shale samples ranging in depth from 1454 ft to 13,430 ft from Shell Oil Company No. 1 Dixie Mortgage Loan well and 33 shale samples ranging in depth from 2183 ft to 13,632 ft from Shell Oil/Delhi-Taylor Oil Corporation No. 3 A.A. McAllen well were examined by x-ray techniques to determine the mineralogical parameters of the geopressured zone in the Vicksburg Fairway. Both wells have the same weight-percent trends with depth for the mineralogy: quartz, calcite, total clay, and potassi… more
Date: January 1, 1981
Creator: Freed, R.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Shale mineralogy and burial diagenesis of Frio and Vicksburg Formations in two geopressured wells, McAllen Ranch area, Hidalgo County, Texas

Description: Thirty-six shale samples ranging in depth from 1454 ft to 13,430 ft from Shell Oil Company No. 1 Dixie Mortage Loan well and 33 shale samples ranging in depth from 2183 ft to 13,632 ft from Shell Oil/Delhi-Taylor Oil Corporation No. 3 A.A. McAllen well were examined by x-ray techniques to determine the mineralogical parameters of the geopressured zone in the Vicksburg Fairway. Both wells have the same weight-percent trends with depth for the mineralogy: quartz, calcite, total clay, and potassiu… more
Date: January 1, 1980
Creator: Freed, R.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Techniques for mapping the types, volumes, and distribution of clays in petroleum reservoirs and for determining their effects on oil production

Description: This report presents the results of correlation of log signatures with information on distribution of the types and volumes of clays in sandstone pore spaces determined from detailed CT-scan, XRD, SEM, and thin section analyses of core samples from three sandstone reservoirs. The log signatures are then analyzed to determine if suitable mathematical/statistical parameter(s) could be calculated from the logs to determine their effects on permeability and oil production. The variability measures … more
Date: May 1, 1993
Creator: Sharma, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Status of Sandia backfill-getter development studies

Description: In this paper, specific functions desired of the backfill as well as various recent experimental studies, results, and current plans for further studies, and modeling of the backfill's effectiveness for delaying radionuclide release are presented. Experimental studies and results are as follows: smectite swelling clay, bentonite, has been selected as a major component in the backfill because of its favorable properties in contact with salt and brine solution; sorptive properties for Pu and… more
Date: January 1, 1980
Creator: Molecke, M.A. & Nowak, E.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Solid-state NMR characterization of Mowry Formation shales

Description: Solid-state {sup 13}C and {sup 29}Si NMR measurements were carried out on a series of petroleum source rocks from the Mowry Formation of the Powder River Basin in Wyoming. The objectives of this study wereto use CP/MAS {sup 13}C NMR measurements to monitor changes in the carbon structure of the kerogen that result from depth of burial, and to examine the feasibility of {sup 29}Si NMR for studying the thermal alteration of clay minerals during diagenesis. Carbon and silicon NMR measurements were… more
Date: April 1, 1992
Creator: Miknis, F. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Techniques for mapping the types, volumes, and distribution of clays in petroleum reservoirs and for determining their effects on oil production. Final report

Description: This report presents the results of correlation of log signatures with information on distribution of the types and volumes of clays in sandstone pore spaces determined from detailed CT-scan, XRD, SEM, and thin section analyses of core samples from three sandstone reservoirs. The log signatures are then analyzed to determine if suitable mathematical/statistical parameter(s) could be calculated from the logs to determine their effects on permeability and oil production. The variability measures … more
Date: May 1, 1993
Creator: Sharma, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Novel, Integrated Treatment System for Coal Waste Waters. Quarterly Report, June 2, 1993--September 1, 1993

Description: The aims of this study are to develop, characterize and optimize a novel treatment scheme that would be effective simultaneously against the toxic organics and the heavy metals present in coal conversion waste waters. In this report, the following findings have been reported and discussed. Acid-base titration of Duomeen-T (DT), a diamine surfactant, that has been used in this study to modify smectite surfaces to form smectite-DT complexes has been undertaken. In aqueous medium containing 5% by … more
Date: December 31, 1993
Creator: Wang, H. Y. & Srinivasan, K. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Modeling the diffusion of Na+ in compacted water-saturated Na-bentonite as a function of pore water ionic strength

Description: Assessments of bentonite barrier performance in waste management scenarios require an accurate description of the diffusion of water and solutes through the barrier. A two-compartment macropore/nanopore model (on which smectite interlayer nanopores are treated as a distinct compartment of the overall pore space) was applied to describe the diffusion of {sup 22}Na{sup +} in compacted, water-saturated Na-bentonites and then compared with the well-known surface diffusion model. The two-compartment… more
Date: August 15, 2008
Creator: Bourg, I.C.; Sposito, G. & Bourg, A.C.M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Hydrothermal factors in porosity evolution and caprock formation at the Geysers steam field, California--insight from the Geysers Coring Project

Description: The Department of Energy (DOE)/geothermal industry-sponsored Geysers Coring Project (GCP) has yielded 236.8 m of continuous core apparently spanning the transition between the uppermost Geysers steam reservoir and its caprock. Both zones in the corehole are developed in superficially similar, fractured, complexly veined and locally sericitized, Franciscan (late Mesozoic) graywacke-argillite sequences. However, whereas the reservoir rocks host two major fluid conduits (potential steam entries), … more
Date: January 26, 1995
Creator: Hulen, Jeffrey B. & Nielson, Dennis L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Final Report: Caustic Waste-Soil Weathering Reactions and Their Impacts on Trace Contaminant Migration and Sequestration

Description: The principal goal of this project was to assess the molecular nature and stability of radionuclide (137-Cs, 90-Sr, and 129-I) immobilization during weathering reactions in bulk Hanford sediments and their high surface area clay mineral constituents. We focused on the unique aqueous geochemical conditions that are representative of waste-impacted locations in the Hanford site vadose zone: high ionic strength, high pH and high Al concentrations. The specific objectives of the work were to (i) me… more
Date: December 11, 2006
Creator: O'Day, Peggy A.; Chorover, J.; Mueller, K.T. & Serne, R.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Recent drilling activities at the earth power resources Tuscarora geothermal power project's hot sulphur springs lease area.

Description: Earth Power Resources, Inc. recently completed a combined rotary/core hole to a depth of 3,813 feet at it's Hot Sulphur Springs Tuscarora Geothermal Power Project Lease Area located 70-miles north of Elko, Nevada. Previous geothermal exploration data were combined with geologic mapping and newly acquired seismic-reflection data to identify a northerly tending horst-graben structure approximately 2,000 feet wide by at least 6,000 feet long with up to 1,700 feet of vertical offset. The well (HSS-… more
Date: March 1, 2005
Creator: Goranson, Colin
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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