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Session 13: Technology Transfer of Geopressured/Geothermal Resources to Industry

Description: This research, conducted by the Bureau of Economic Geology and the Center for Energy Studies, includes the following areas of interest; geological studies depicting pressure gradients and thermal gradients, sand distribution and fault patterns, all of which are used in petroleum exploration; geophysical data for interpretation of seismic velocities based upon lithologic changes and subsurface discontinuities; sandstone consolidation data involving changes of permeabilities with depth and diagen… more
Date: December 1, 1983
Creator: Dorfman, Myron H. & Morton, Robert A.
Partner: UNT Libraries Government Documents Department
open access

Radial Flow of Pressured Hot Water Through Narrow Cracks

Description: Geothermal wells discharging hundreds of tons/hour of steam-water mixtures may be supplied at depth from one very narrow crack of width 1 to 2 mm, or alternatively, from some hundreds of hairline cracks. In the former case, turbulent flow takes place out to tens of meters from the well while the sum of frictional and kinetic pressure-drop indicates the flashing distance to be of the order of 10 cm from the well wall for pressure-temperature equilibrium. However it is unlikely that equilibrium o… more
Date: December 15, 1983
Creator: James, Russell
Partner: UNT Libraries Government Documents Department
open access

Thermal Expansion Behavior of Cerro Prieto Sandstones and Other Sedimentary Rocks Under Stress

Description: This paper describes the experimental work and presents the results of a research program carried out to investigate the thermal expansion behavior of sedimentary rocks under high stress conditions. The aspects that were investigated include the effects of temperature, temperature cycling, and confining pressure. Furthermore, the validity of the usual assumption on thermal expansion isotropy was investigated. On the other hand, the matrix thermal expansion concept is analyzed and its physical m… more
Date: December 15, 1983
Creator: Contreras, E. & Bermejo, F.
Partner: UNT Libraries Government Documents Department
open access

A Method to Recover Useful Geothermal-Reservoir Parameters from Production Characteristic Curves (2) Hot Water Reservoirs

Description: In this paper we develop and demonstrate a method to estimate the reservoir pressure, a mass productivity index, and a thermal power productivity index for vertical water-fed geothermal wells, from its production characteristic (also called output) curves. In addition, the method allows to estimate the radius of influence of the well, provided that a value of the reservoir transmisivity is available. The basic structure of the present method is: first, the measured wellhead mass flowrate; and p… more
Date: December 15, 1983
Creator: Iglesias, E.; Arellano, V. & Molinar, R.
Partner: UNT Libraries Government Documents Department
open access

A Method to Recover Useful Geothermal-Reservoir Parameters from Production Characteristic Curves (1) Steam Reservoirs

Description: In this paper we develop and demonstrate a method to estimate the reservoir pressure and a productivity index for vertical steam wells, from its production characteristic (also called output) curves. In addition, the method allows to estimate the radius of influence of the well, provided that a value of the reservoir transmisivity is available. The basic structure of the present method is: first, the measured well head mass flowrates and pressures are transformed to downhole conditions by means… more
Date: December 15, 1983
Creator: Iglesias, E.; Arellano, V.; Garfias, A.; Miranda, C.; Hernandez, J. & Gonzalez, J.
Partner: UNT Libraries Government Documents Department
open access

Quality assurance of PTS thermal hydraulic calculations at BNL. [Pressurized Thermal Shock]

Description: Rapid cooling of the reactor pressure vessel at high pressure has a potential of challenging the vessel integrity. This phenomenon is called overcooling or Pressurized Thermal Shock (PTS). The Nuclear Regulatory Commission (NRC) has selected three plants representing three types of PWRs in use for detailed PTS study. Oconee-1 (B and W), Calvert Cliffs (C.E.), and H.B. Robinson (Westinghouse). The Brookhaven National Laboratory (BNL) has been requested by NRC to review and compare the input deck… more
Date: January 1, 1983
Creator: Rohatgi, U.S.; Pu, J.; Jo, J. & Saha, P.
Partner: UNT Libraries Government Documents Department
open access

Validation of neutron-transport calculations in benchmark facilities for improved damage-fluence predictions

Description: An accurate determination of damage fluence accumulated by reactor pressure vessels (RPV) as a function of time is essential in order to evaluate the vessel integrity for both pressurized thermal shock (PTS) transients and end-of-life considerations. The desired accuracy for neutron exposure parameters such as displacements per atom or fluence (E > 1 MeV) is of the order of 20 to 30%. However, these types of accuracies can only be obtained realistically by validation of nuclear data and calcula… more
Date: January 1, 1983
Creator: Williams, M.L.; Stallmann, F.W.; Maerker, R.E. & Kam, F.B.K.
Partner: UNT Libraries Government Documents Department
open access

TRAC analysis and support of Oconee-1 PTS studies. [Pressurized thermal shock following overcooling transients]

Description: This paper describes the overall pressurized thermal shock (PTS) program at Los Alamos with emphasis on TRAC-PF1 calculations of severe overcooling transients for the Oconee-1 pressurized water reactor (PWR). A summary of results for several calculations are presented for the Oconee-1 PWR along with detailed discussions of two of the most severe overcooling transients predicted (main steam-line break and turbine-bypass valve (TBV) failures). The calculations performed were plant specific in tha… more
Date: January 1, 1983
Creator: Ireland, J.R.
Partner: UNT Libraries Government Documents Department
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Generating capacity of the Heber geothermal field, California

Description: Using numerical simulation techniques and the radial model developed for the study of the natural state of the Heber field (Lippmann and Bodvarsson, 1983b), the response of this geothermal system to exploitation is analyzed. In this study the generation rate in the field is allowed to build up over a period of 10 years; after that, 30 years of constant power production is assumed. Full (100%) injection of the spent brines is considered, the fluids being injected 2250 m (near injection) or 4250 … more
Date: December 1, 1983
Creator: Lippmann, M.J. & Bodvarsson, G.S.
Partner: UNT Libraries Government Documents Department
open access

Determination of the global recombination rate coefficient for the ISX-B Tokamak

Description: The global recombination rate coefficient for hydrogen has been measured for the ISX-B tokamak vacuum vessel for various surface conditions. The measurements were performed by observing the rate of decrease of gas pressure in the vessel during a glow discharge. The parameters of the glow discharge and the complete experimental method are described. Previously published analytic and numerical models are used for data analysis. The effects of surface contamination on the results are described. Fo… more
Date: January 1, 1983
Creator: Langley, R. A. & Howe, H. C.
Partner: UNT Libraries Government Documents Department
open access

Behavior of short flaws during thermal shock: thermal-shock experiment TSE-7

Description: Thermal-shock experiment TSE-7 was designed for the investigation of the behavior of a short, axially oriented flaw on the inner surface of an unclad, thick-walled, steel cylinder that was to be subjected to a severe thermal shock. Calculations indicated that the flaw would extend on the surface, possibly the full length of the cylinder in a single event, and subsequent events would extend the depth of the flaw to approx. fifty percent of the wall thickness. If the flaw did in fact extend on th… more
Date: January 1, 1983
Creator: Cheverton, R.D.; Bolt, S.E. & Ball, D.G.
Partner: UNT Libraries Government Documents Department
open access

Computational methods for fracture analysis of heavy-section steel technology (HSST) pressure vessel experiments

Description: This paper summarizes the capabilities and applications of the general-purpose and special-purpose computer programs that have been developed for use in fracture mechanics analyses of HSST pressure vessel experiments. Emphasis is placed on the OCA/USA code, which is designed for analysis of pressurized-thermal-shock (PTS) conditions, and on the ORMGEN/ADINA/ORVIRT system which is used for more general analysis. Fundamental features of these programs are discussed, along with applications to pre… more
Date: January 1, 1983
Creator: Bass, B. R.; Bryan, R. H.; Bryson, J. W. & Merkle, J. G.
Partner: UNT Libraries Government Documents Department
open access

BNL severe-accident sequence experiments and analysis program. [PWR; BWR]

Description: In the analysis of degraded core accidents, the two major sources of pressure loading on light water reactor containments are: steam generation from core debris-water thermal interactions; and molten core-concrete interactions. Experiments are in progress at BNL in support of analytical model development related to aspects of the above containment loading mechanisms. The work supports development and evaluation of the CORCON (Muir, 1981) and MARCH (Wooton, 1980) computer codes. Progress in the … more
Date: January 1, 1983
Creator: Greene, G.A.; Ginsberg, T. & Tutu, N.K.
Partner: UNT Libraries Government Documents Department
open access

Design of a dee vacuum vessel for Doublet III

Description: The Big Dee modification project has completed the basic physics design and conceptual engineering design phase and is beginning detailed engineering. The project is funded in FY83 for completing most of the detailed design and placing orders for long lead components and systems. This paper summarizes the conceptual engineering design, especially of the vessel itself.
Date: January 1, 1983
Creator: Davis, L. G.
Partner: UNT Libraries Government Documents Department
open access

Peach Bottom turbine-trip Test 3 analysis with RELAP5 code

Description: The Peach Bottom turbine trip tests provide excellent benchmark problems for transient analysis of a boiling water reactor (BWR). Analyses of the three turbine trip tests with the RELAP3B/BNL-TWIGL, RETRAN and other codes have been documented. The non-equilibrium, two fluid thermal-hydraulic code-RELAP5/MOD1 was recently used to analyze the test at low power, Test 1. This paper presents the analysis of the more severe transient, Test 3, with the RELAP5 code and provides a comparison of the calc… more
Date: January 1, 1983
Creator: Lu, M.S.
Partner: UNT Libraries Government Documents Department
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Evaporation of mesons from quark-gluon plasma by fission of chromoelectric flux tubes

Description: The chromoelectric flux tube model is used to obtain a dynamical description of the evaporation of mesons from a quark-gluon plasma. The radiation pressure is computed to assess whether this process is an important mode for the disassembly of a compressed plasma. A new result for the creation rate of q anti q pairs in a constant color field is employed.
Date: April 1, 1983
Creator: Glendenning, N.K.; Banerjee, B. & Matsui, T.
Partner: UNT Libraries Government Documents Department
open access

TRAC calculations of overcooling transients in PWRs for pressurized thermal-shock analysis

Description: This paper briefly describes the overall pressurized thermal shock (PTS) program at Los Alamos with emphasis on TRAC-PF1 calculations of severe overcooling transients in pressurized water reactors (PWRs). Overcooling transients for both the Oconee-1 and Calvert Cliffs-1 nuclear plants have been performed. A summary of results for several calculations are presented for the Oconee-1 PWR along with detailed discussions of two of the most severe overcooling transients predicted (main steam-line bre… more
Date: January 1, 1983
Creator: Ireland, J. R. & Boyack, B. E.
Partner: UNT Libraries Government Documents Department
open access

TRAC-PF1: pressurized-thermal shock calculations for several small-break loss-of-coolant accident transients in the Oconee-1 nuclear power plant

Description: This paper presents the thermal-hydraulic response of the Oconee-1 plant to several small-break loss-of-coolant accidents and a description of the TRAC-PF1 plant model of Oconee-1 used in support of the Nuclear Regulatory Commission directed pressurized thermal shock study. The small-break transients investigated included a stuck-open power-operated-relief-valve, a 2-in.-diam surge line break, and a 4-in.-diam surge line break. The results of the TRAC-PF1 calculations indicated that none of the… more
Date: January 1, 1983
Creator: Burkett, M. W. & Bassett, B.
Partner: UNT Libraries Government Documents Department
open access

NRC plant-analyzer development at BNL. [BWR]

Description: The objective of this program is to develop an LWR engineering plant analyzer capable of performing realistic and accurate simulations of plant transients and Small-Break Loss of Coolant Accidents at real-time and faster than real-time computing speeds and at low costs for preparing, executing and evaluating such simulations. The program is directed toward facilitating reactor safety analyses, on-line plant monitoring, on-line accident diagnosis and mitigation and toward improving reactor opera… more
Date: January 1, 1983
Creator: Wulff, W.
Partner: UNT Libraries Government Documents Department
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TRAC-PF1 analysis of LOFT steam-generator feedwater transient test L9-1. [PWR]

Description: The Transient Reactor Analysis Code (TRAC-PF1) calculations were compared to test data from Loss-of-Fluid Test (LOFT) L9-1, which was a loss-of-feedwater transient. This paper includes descriptions of the test and the TRAC input and compares the TRAC-calculated results with the test data. We conclude that the code predicted the experiment well, given the uncertainties in the boundary conditions. The analysis indicates the need to model all the flow paths and heat structures, and to improve the … more
Date: January 1, 1983
Creator: Meier, J.K.
Partner: UNT Libraries Government Documents Department
open access

Electronic properties of Ar and Xe under pressure

Description: A simple model for calculating ground- and excited-state properties of molecular and rare-gas crystals is presented. The electrons are considered to be tightly bound to their molecular or atomic sites and the effects of the crystal potential, calculated with local-density functionals, are treated as a perturbation of the molecules or atoms. Results for Ar to 500 kbar show that the ground-state atoms compress as the pressure is increased and that there is a gradual increase in exciton energies. … more
Date: January 1, 1983
Creator: LeSar, R.
Partner: UNT Libraries Government Documents Department
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Conceptual design summary for modifying Doublet III to a large dee-shaped configuration

Description: The Doublet III tokamak is to be reconfigured by replacing its indented (doublet) vacuum vessel with a larger one of a dee-shaped cross section. This change will permit significantly larger elongated plasmas than is presently possible and will allow higher plasma current (up to 5 MA) and anticipated longer confinement time. Reactor relevant values of stable beta and plasma pressure are predicted. This modification, while resulting in a significant change in capability, utilizes most of the exis… more
Date: May 1, 1983
Creator: Davis, L. G.; Gallix, R.; Luxon, J. L.; Mahdavi, M. A.; Puhn, F. A.; Rock, P. J. et al.
Partner: UNT Libraries Government Documents Department
open access

Integrated real-time fracture-diagnostics instrumentation system

Description: The use of an integrated, real-time fracture-diagnostics instrumentation system for the control of the fracturing treatment during massive hydraulic fracturing is proposed. The proposed system consists of four subsystems: an internal-fracture-pressure measurement system, a fluid-flow measurement system, a borehole seismic system, and a surface-electric-potential measurement system. This use of borehole seismic and surface-electric-potential measurements, which are essentially away-from-the-well… more
Date: January 1, 1983
Creator: Engi, D
Partner: UNT Libraries Government Documents Department
open access

Response of east Mesa and Raft River reservoirs to injection-backflow testing

Description: Analysis of tracer recovery curves from injection-backflow testing at two geothermal reservoirs reveals large differences in responsebetween the two. The east Mesa reservoir is in a layered sandstone matrix, and tracer behavior can be adequately described by porous media theory. As the volume of water injected into the reservoir increases and, consequently, the depth of penetration into the formation, the ratio of dispersive flux to advective flux decreases, indicating the increasing importance… more
Date: December 1, 1983
Creator: Russell, B. F.; Hull, L. C. & Downs, W. F.
Partner: UNT Libraries Government Documents Department
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