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Geothermal Injection Monitoring Project. Phase I status report, April 1981-April 1982

Description: The feasibility of using remote geophysical techniques to monitor the movement of injected brine has been evaluated. It was established that no single approach is likely to be identified that can be used to accurately monitor the precise location of the injected fluid. Several approaches have been considered in parallel because they add new dimensions to the existing monitoring capabilities, and are likely to cover a range of applications at a variety of geothermal sites. These include: microse… more
Date: August 13, 1982
Creator: Younker, L.; Hanson, J.; Didwall, E.; Kasameyer, P.; Smith, A.; Hearst, J. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Summary outline of DOE geoscience and geoscience - related research

Description: The Office of Basic Energy Sciences (OBES) supports long-range, basic research in those areas of the geosciences which are relevant to the nation's energy needs. The objective of the Geoscience program is to develop a quantitative and predictive understanding of geological, geophysical and geochemical structures and processes in the solid earth and in solar-terrestrial relationships. This understanding is to assure an effective knowledge base for energy resource recognition, evaluation and util… more
Date: February 1, 1982
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Brief overview of geophysical probing technology

Description: An evaluation of high-resolution geophysical techniques which can be used to characterize a nulcear waste disposal site is being conducted by the Lawrence Livermore National Laboratory (LLNL) at the request of the US Nuclear Regulatory Commisson (NRC). LLNL is involved in research work aimed at evaluating the current capabilities and limitations of geophysical methods used for site selection. This report provides a brief overview of the capabilities and limitations associated with this technolo… more
Date: February 1, 1982
Creator: Ramirez, A.L. & Lytle, R.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Disposal of liquid radioactive wastes through wells or shafts

Description: This report describes disposal of liquids and, in some cases, suitable solids and/or entrapped gases, through: (1) well injection into deep permeable strata, bounded by impermeable layers; (2) grout injection into an impermeable host rock, forming fractures in which the waste solidifies; and (3) slurrying into excavated subsurface cavities. Radioactive materials are presently being disposed of worldwide using all three techniques. However, it would appear that if the techniques were verified as… more
Date: January 1, 1982
Creator: Perkins, B.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Design guidance for fracture-critical components at Lawrence Livermore National Laboratory

Description: Fracture is an important design consideration for components whose sudden and catastrophic failure could result in a serious accident. Elements of fracture control and fracture mechanics design methods are reviewed. Design requirements, which are based on the consequences of fracture of a given component, are subsequently developed. Five categories of consequences are defined. Category I is the lowest risk, and relatively lenient design requirements are employed. Category V has the highest pote… more
Date: March 3, 1982
Creator: Streit, R. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Assessment of effectiveness of geologic isolation systems. Analytic modeling of flow in a permeable fissured medium

Description: An analytic model has been developed for two dimensional steady flow through infinite fissured porous media, and is implemented in a computer program. The model is the first, and major, step toward the development of a model with finite boundaries, intended for use as a tool for numerical experiments. These experiments may serve to verify some of the simplifying assumptions made in continuum models and to gain insight in the mechanics of the flow. The model is formulated in terms of complex var… more
Date: February 1, 1982
Creator: Strack, O.D.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Piping-reliability analysis for pressurized-water-reactor feedwater lines

Description: This paper presents a piping reliability analysis for feedwater lines at five PWR plants; the analysis is based on probabilistic fracture mechanics. On the basis of observed pipe cracks in these feedwater lines, the crack is modeled with an initial semi-elliptical shape along the pipe inner circumference. Initial crack samples are generated using the Monte Carlo technique in conjunction with an importance sampling scheme. The fatigue model for crack growth employs a Paris-type growth-rate equat… more
Date: January 1, 1982
Creator: Woo, H.H. & Chou, C.K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Mechanisms of formation damage in matrix-permeability geothermal wells

Description: Tests were conducted to determine mechanisms of formation damage that can occur in matrix permeability geothermal wells. Two types of cores were used in the testing, actual cores from the East Mesa Well 78-30RD and cores from a fairly uniform generic sandstone formation. Three different types of tests were run. The East Mesa cores were used in the testing of the sensitivity of core to filtrate chemistry. The tests began with the cores exposed to simulated East Mesa brine and then different filt… more
Date: April 1, 1982
Creator: Bergosh, J. L.; Wiggins, R. B. & Enniss, D. O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Geothermal resource, engineering and economic feasibility study for the City of Ouray, Colorado. Final report

Description: A geothermal energy feasibility study has been performed for the City of Ouray, Colorado, to determine the potential economic development opportunities to the City. The resource assessment indicates the resource to be associated with the Ouray fault zone, the Leadville limestone formation, the high thermal gradient in the area of the San Juan mountains, and the recharge from precipitation in the adjacent mountains. Four engineering designs of alternative sizes, costs, applications, and years of… more
Date: July 31, 1982
Creator: Meyer, R. T.; Raskin, R. & Zocholl, J. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Analytical performance models for geologic repositories. Volume 2

Description: This report presents analytical solutions of the dissolution and hydrogeologic transport of radionuclides in geologic repositories. Numerical examples are presented to demonstrate the equations resulting from these analyses. The subjects treated in this report are: solubility-limited transport with transverse dispersion (chapter 2); transport of a radionuclide chain with nonequilibrium chemical reactions (chapter 3); advective transport in a two-dimensional flow field (chapter 4); radionuclide … more
Date: October 1, 1982
Creator: Chambre, P. L.; Pigford, T. H.; Fujita, A.; Kanki, T.; Kobayashi, A.; Lung, H. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fracture detection in crystalline rock using ultrasonic reflection techniques: Volume 1

Description: This research was initiated to investigate using ultrasonic seismic reflection techniques to detect fracture discontinuities in a granitic rock. Initial compressional (P) and shear (SH) wave experiments were performed on a 0.9 {times} 0.9 {times} 0.3 meter granite slab in an attempt to detect seismic energy reflected from the opposite face of the slab. It was found that processing techniques such as deconvolution and array synthesis could improve the standout of the reflection event. During the… more
Date: November 1, 1982
Creator: Palmer, S.P. (Lawrence Berkeley Lab., CA (USA))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Geothermal-reservoir engineering research at Stanford University. Second annual report, October 1, 1981-September 30, 1982

Description: Progress in the following tasks is discussed: heat extraction from hydrothermal reservoirs, noncondensable gas reservoir engineering, well test analysis and bench-scale experiments, DOE-ENEL Cooperative Research, Stanford-IIE Cooperative Research, and workshop and seminars. (MHR)
Date: September 1, 1982
Creator: Ramey, H.J. Jr.; Kruger, P.; Horne, R.N.; Brigham, W.E. & Miller, F.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Chemical Engineering Division Fuel Cycle Programs. Quarterly progress report, October-December 1981

Description: Methods of measuring rates of leaching from simulated waste glasses using neutron activation analysis and radiotracers have been developed. Laboratory-scale impact tests of solid alternative waste forms are being performed to obtain a size analysis of the fragments. Logging techniques are being developed to measure the relative amount of residual oil in a depleted oil reservoir by injecting gamma-active solution into it. Work to test the behavior of radionuclides leached from proposed nuclear-w… more
Date: May 1, 1982
Creator: Steindler, M.J.; Bates, J.K. & Cannon, T.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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/sup 238/Pu fuel form processes. Quarterly report, July-September 1982

Description: Fracture tendency of pellets after final heat treatment or vacuum outgassing during production has been reviewed. A statistical analysis of fracture tendency has revealed a cyclical trend. The period of the cycle on average is about every 50 pellets. Phosphorus is considered detrimental to the impact behavior of iridium. Tests show that phosphorus is easily picked up by PuO/sub 2/ through a variety of pathways and is difficult to remove by heating techniques such as are possible in the PuFF Fac… more
Date: December 1, 1982
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Characterization of Kevlar 49 fibers by electron paramagnetic resonance. Final report, 20 May 1981-20 June 1982. [Radicals induced by ultraviolet or fracture]

Description: EPR was used to investigate the free radicals created in Kevlar 49 fibers by stress-induced and photo-induced macromolecular chain scissions. Mn/sup +2/ ions were identified from the EPR spectrum of frozen solutions of concentrated sulfuric acid containing Kevlar 49. Other ions present are Cu/sup +2/, and possibly Fe/sup +3/, Cr/sup +3/, and Ti/sup +3/. EPR lineshape anisotropy indicates that some of the metal ions and first coordinate spheres are oriented. The concentration of stress-induced r… more
Date: June 20, 1982
Creator: Brown, I.M. & Sandreczki, T.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Deformation and fracture characteristics of spent Zircaloy fuel cladding

Description: For a better understanding of Zircaloy fuel-rod failure by the pellet-cladding interaction (PCI) phenomenon, a mechanistic study of deformation and fracture behavior of spent power reactor fuel cladding under simulated PCI conditions was conducted. Zircaloy-2 cladding specimens, obtained from fuel assemblies of operating power reactors, were deformed to fracture at 325/sup 0/C by internal gas pressurization in the absence of fission product simulants. Fracture characteristics and microstructure… more
Date: September 1, 1982
Creator: Chung, H.M. & Yaggee, F.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Shallow seismic investigations of Devonian-shale gas production

Description: The foremost conclusion of this study is that fractured Devonian shale gas reservoirs, as exemplified by the Cottageville field, are detectable by seismic reflection methods. Further, the target is not particularly difficult, once the nature of the seismic anomaly is understood. The preferred exploration rationale is based on travel time anomalies related to lowered acoustic velocity within the gas-bearing zone. In the simplest case the travel time anomaly causes an apparent down-warp or sag in… more
Date: June 1, 1982
Creator: Williams, R. T.; Ruotsala, J. E.; Kudla, J. J. & Dunne, W. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Geological and Geophysical Study of the Baca Geothermal Field, Valles Caldera, New Mexico

Description: The Baca location {number_sign}1 geothermal field is located in north-central New Mexico within the western half of the Plio-Pleistocene valles Caldera. Steam and hot water are produced primarily from the northeast-trending Redondo Creek graben, where downhole temperatures exceed 500 F. Stratigraphically the reservoir region can be described as a five-layer sequence that includes (1) caldera fill and the upper units of the Bandelier ash flow tuff, (2) the lower members of this tuff, which compr… more
Date: March 1, 1982
Creator: Wilt, M. & Haar, S.V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Studies of injection into naturally fractured reservoirs

Description: A semi-analytical model for studies of cold water injectioninto naturally fractured reservoirs has been developed. The model can beused to design the flow rates and location of injection wells in suchsystems. The results obtained using the model show that initially thecold water will move very rapidly through the fracture system away fromthe well. Later on, conductive heat transfer from the rock matrix blockswill retard the advancement of the cold water front, and eventuallyuniform energy sweep… more
Date: July 1, 1982
Creator: Bodvarsson, Gudmundur S. & Lai, Cheng Hsien
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Numerical simulation of fracture

Description: The Bedded Crack Model (BCM) is a constitutive model for brittle materials. It is based on effective modulus theory and makes use of a generalized Griffith criterion for crack growth. It is used in a solid dynamic computer code to simulate stress wave propagation and fracture in rock. A general description of the model is given and then the theoretical basis for it is presented. Some effects of finite cell size in numerical simulations are discussed. The use of the BCM is illustrated in simulat… more
Date: January 1, 1982
Creator: Margolin, L. G. & Adams, T. F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Protecting against failure by brittle fracture in ferritic-steel shipping containers greater than four-in. thick

Description: This report presents methods for protecting against brittle fracture spent-fuel shipping containers made from ferritic-steel forgings greater than four in. thick. Both fracture arrest and fracture initiation criteria were examined as bases for establishing requirements for the design and selection of materials for shipping containers. This report also includes a discussion of the brittle-fracture sensitivity of the containers to various processes used in container fabrication. 19 figures, 3 tab… more
Date: December 1, 1982
Creator: Schwartz, M.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Proximity functions for modeling fluids and heat flow in reservoirs with stochastic fracture distributions

Description: Conventional approaches to geothermal reservoir modeling have employed a porous medium approximation, but recently methods have been developed which can take into account the different thermodynamic conditions in rock matrix and fractures. The multiple interacting continua method (MINC) treats the thermal and hydraulic interaction between rock matrix and fractures in terms of a set of geometrical parameters. However, this approach was restricted to idealized fracture distributions with regularl… more
Date: October 1982
Creator: Pruess, Karsten & Karasaki, Kenzi
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: MarkAguirre]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: January 27, 1982, 6:00 p.m.
Duration: 1 minute 35 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
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Final report of experimental laboratory-scale brittle fracture studies of glasses and ceramics

Description: An experimental program was conducted to characterize the fragments generated when brittle glasses and ceramics are impacted. The direct application of the results is to radioactive waste forms for which the effects of accidental impacts must be known or predictable. Two major measurable experimental responses used for characterization of these effects are (1) the size distribution of the fragments, including the sizes that are respirable, and (2) the increase in surface area of the brittle tes… more
Date: October 1, 1982
Creator: Jardine, L. J.; Mecham, W. J.; Reedy, G. T. & Steindler, M. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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