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20-TeV colliding-beam facilities

Description: In March, a workshop was held at Cornell University on the accelerator. The conclusion of this workshop was that a 20 TeV on 20 TeV proton-proton collider is technically feasable, that construction could begin after 2.5 to 4 years of research and development, and the cost would be 1.3 to 2 billion dollars. To put this machine into perspective one must consider the existing facilities listed in table I. There are about 23 high energy physics laboratories in the world that are being operated or c… more
Date: September 15, 1983
Creator: Huson, F.R.
Item Type: Refine your search to only Report
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Analysing Spinner Measurements from Well Tests Using Computerized Interpretation Techniques

Description: The development of reliable spinner tools may help avoid much of the ambiquity which often accompanies well tests in geothermal wells, due to interlayer flows through the well bore. However, the use of both pressure and flow rate changes requires new methods of well test interpretation. The Stanford Geothermal Program has been developing microcomputer-based techniques for the simultaneous analysis of pressure and flow rate measurements. There are two key steps in the procedure. Firstly, the non… more
Date: December 15, 1983
Creator: Horne, Roland N.; Guillot, Alain & Rosa, Adalberta
Item Type: Refine your search to only Article
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Analysis of Production Data from the Krafla Geothermal Field, Iceland

Description: The Krafla geothermal field in northeastern Iceland consists of several zones, which contain fluids of different composition and thermodynamic state (Stefansson, 1981). In this paper they examine production data from wells which are completed in two-phase zones. Transient changes in flow rate and flowing enthalpy are analyzed to obtain insight into relative (liquid and gas phase) permeabilities, and other reservoir parameters. Numerous studies have shown that predictions of geothermal reservoir… more
Date: December 15, 1983
Creator: Pruess, K.; Bodvarsson, G. S. & Stefansson, V.
Item Type: Refine your search to only Article
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Attempt to compare two arc orbit correction schemes analytically

Description: Consider a transport line that consists of periodic cells. Let the beam position monitors and the orbit correctors be located with the same period as the cells and let the BPM's and the corrector distributions interlace each other. The arrangement does not always provide a stable orbit correction. The criterion for stability has been derived by Joe Murray and is reproduced. We calculate the rms orbit, the effect of BPM errors and the rms corrector strength in such correction schemes, yielding a… more
Date: December 15, 1983
Creator: Chao, A. & Weng, W.
Item Type: Refine your search to only Report
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Behaviors of Crack-Like Reservoirs by Means of Fracturing at Nigorikawa and Kakkonda Geothermal Fields

Description: A basic concept of the geothermal reservoir as a set of cracks is first presented. Extensions of subsurface cracks during well stimulation treatments at Nigorikawa(Mori) and closure operations of production well-head valves at Kakkonda are analysed and their behaviors are demonstrated based on results of long-distance AE Measurements.
Date: December 15, 1983
Creator: Abe, Hiroyuki; Takahashi, Hideaki; Nakatsuka, Katsuto; Niitsuma, Hiroaki & Takanohashi, Morihiko
Item Type: Refine your search to only Article
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Broad-band soft x-ray diagnostic instruments at the LLNL Novette laser facility

Description: Complementary broad-band instruments have been developed to measure time dependent, absolute soft x-ray spectra at the Lawrence Livermore National Laboratory (LLNL) Nd glass laser irradiation facilities. Absolute flux measurements of x rays emitted from laser-produced plasmas are important for understanding laser absorption and energy transport. We will describe two new 10-channel XRD systems that have been installed at the LLNL Novette facility for use in the 0.15- to 1.5-keV range. Since XRD … more
Date: September 15, 1983
Creator: Tirsell, K.G.; Lee, P.H.Y.; Nilson, D.G. & Medecki, H.
Item Type: Refine your search to only Article
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Charged-particle beam: a safety mandate

Description: The Advanced Test Accelerator (ATA) is a recent development in the field of charged particle beam research at Lawrence Livermore National Laboratory. With this experimental apparatus, researchers will characterize intense pulses of electron beams propagated through air. Inherent with the ATA concept was the potential for exposure to hazards, such as high radiation levels and hostile breathing atmospheres. The need for a comprehensive safety program was mandated; a formal system safety program w… more
Date: July 15, 1983
Creator: Young, K.C.
Item Type: Refine your search to only Article
open access

The Cost Effectiveness of Fracture Stimulation in Increasing the Flow from Geothermal Wells

Description: The cost effectiveness of fracture stimulation at The Geysers, the Imperial Valley, and other geothermal resource areas in the United States vas studied using GEOCOM, a computer code for analyzing the impact of completion activities on the life-cycle costs of geothermal wells. Technologies for fracturing the reservoir near the wellbore involve the creation of a pressure pulse in the wellbore by means of either hydraulic or explosive force. The cost of a single fracture stimulation job can vary … more
Date: December 15, 1983
Creator: Brown, Gerald L.
Item Type: Refine your search to only Article
open access

Cost Overruns in Major Weapon Systems: Current Dimensions of a Longstanding Problem

Description: This paper reviews the initiatives of the Reagan Administration to control cost overruns during the last 2 and a half years and the actions taken by the Congress to strengthen its oversight role. Particular attention is directed at the critical need to enhance management incentive and accountability at all level of the acquisition process. If recently instituted reform in the Department of Defense fail to control cost overruns, pressure may grow for a more sweeping and radical approach. Serious… more
Date: October 15, 1983
Creator: Lockwood, David E.
Item Type: Refine your search to only Report
open access

Critical review of the chemistry and thermodynamics of technetium and some of its inorganic compounds and aqueous species

Description: Chemical and thermodynamic data for Technetium (Tc) and some of its inorganic compounds and aqueous species are reviewed here. Major emphasis is given to systems with potential geochemical applications, especially the geochemistry of radioactive waste disposal. Compounds considered include oxides, hydroxides, hydrates oxides, halides, oxyhalides, double halides, and sulfides. The aqueous species considered include those in both noncomplexing media (pertechnetates, technetates, aquo-ions, and hy… more
Date: September 15, 1983
Creator: Rard, J.A.
Item Type: Refine your search to only Report
open access

Crustal Rock Fracture Mechanics for Design and Control of Artificial Subsurface Cracks in Geothermal Energy Extraction Engineering ({Gamma}-Project)

Description: Recently a significant role of artificial and/or natural cracks in the geothermal reservoir has been demonstrated in the literatures (Abe, H., et al., 1983, Nielson, D.L. and Hullen, J.B., 1983), where the cracks behave as fluid paths and/or heat exchanging surfaces. Until now, however, there are several problems such as a design procedure of hydraulic fracturing, and a quantitative estimate of fluid and heat transfer for reservoir design. In order to develop a design methodology of geothermal … more
Date: December 15, 1983
Creator: Abe, Hiroyuki & Takahashi, Hideaki
Item Type: Refine your search to only Article
open access

Deploymerization of coal by direct solvent attack. Semi-annual report, April 1, 1983-August 31, 1983

Description: The depolymerization of Illinois No. 6 coal by a series of solvents having different basecities (pK/sub a/) and nucleophilicities (Swain-Scott nu values) showed no dependence on either the basicity of nucleophilicity of the solvents. As expected, the conversion decreases as the temperature of the reaction is reduced, but the lower the reaction temperature, the higher the percentage of amine incorporation becomes in the products. 5 tables.
Date: September 15, 1983
Creator: Larsen, J. W. & Mohammadi, M.
Item Type: Refine your search to only Report
open access

Desert Peak: A Geothermal Field in Churchill County, Nevada

Description: The 400{degree}F liquid dominated Desert Peak geothermal reservoir produces from fractures associated with intersecting north-northeast and east-northeast trending normal faults. Fractures occur in intrusive basement rocks, pre-Tertiary metasedimentary and metavolcanic rocks, and Tertiary volcanic rocks. Static temperature surveys from six deep wells indicate that the reservoir has both recharge and discharge in the vicinity of wells B21-1 and 86-21. Interference data, from a 30-day flow test o… more
Date: December 15, 1983
Creator: Goyal, K.P.; Benoit, W.R.; Maas, J.P. & Rosser, J.R.
Item Type: Refine your search to only Article
open access

Design and Development of a Test Facility to Study Two-Phase Steam/Water Flow in Porous Media

Description: The concept of relative permeability is the key concept in extending Darcy's law for single phase flow through porous media to the two-phase flow regime. Relative permeability functions are needed for simulation studies of two-phase geothermal reservoirs. These are poorly known inspite of considerable theoretical and experimental investigations during the last decade. Since no conclusive results exist, many investigators use ad hoc parametrization, or adopt results obtined from flow of oil and … more
Date: December 15, 1983
Creator: Verma, Ashok K.; Pruess, Karsten; Bodvarsson, G. S.; Tsang, C. F. & Witherspoon, Paul A.
Item Type: Refine your search to only Article
open access

The Development and Use of a High Temperature Downhole Flowmeter for Geothermal Well Logging

Description: This paper discusses the development and use of a high temperature (300{degrees}C) downhole flowmeter for geothermal well logging. The availability of the instrument gives the reservoir engineer a powerful tool for formation evaluation and studying wellbore dynamics. The instrument components, their function, and temperature limitations are discussed in detail. Several field examples of spinner log interpretation are also presented.
Date: December 15, 1983
Creator: Solbau, R.D.; Goranson, C.B. & Benson, S.M.
Item Type: Refine your search to only Article
open access

Disposal of Flashed Brine Dosed with CaCO{sub3} Scale Inhibitor: What Happens When the Inhibitor is Exhausted?

Description: A freshly flashed geothermal liquid, previously dosed with inhibitor and super-saturated with calcite was injected into another well where it displaced an unflashed counterpart of itself around the wellbore. Back-production of the injectate, and subsequently the native fluid, has yielded data for the rate that a scale inhibitor is degraded after injection. The circumstance also displays a novel mechanism whereby two fluids that do not physically mix never the less reactive with one another thro… more
Date: December 15, 1983
Creator: Michels, D. E.
Item Type: Refine your search to only Article
open access

DOE's Current Geothermal Reservoir Programs and Comments on International Cooperation in Hydrothermal Research

Description: DOE's geothermal program continues to emphasize a range of reservoir-related programs in reservoir definition, brine injection, stimulation, hot dry rock, geopressured resources and, now, magma resources. These programs are described briefly. Programs in international cooperation between the U.S. and 23 other countries on hydrothermal research have produced important gains in knowledge over the past ten years. Although the activity has diminished, a resurgence is anticipated.
Date: December 15, 1983
Creator: Toms, Ronald S. H.
Item Type: Refine your search to only Article
open access

Doublet Tracer Testing in Klamath Falls, Oregon

Description: A tracer test was carried out in a geothermal doublet system to study the injection behavior of a developed reservoir known to be fractured. The doublet produces about 320 gpm of 160 F water that is used for space heating and then injected; the wells are spaced 250 ft apart. Tracer breakthrough was observed in 2 hours and 45 minutes in the production well, indicating fracture flow. However, the tracer concentrations were low and indicated porous media flow; the tracers mixed with a reservoir vo… more
Date: December 15, 1983
Creator: Gudmundsson, J.S.; Johnson, S.E.; Horne, R.N.; Jackson, P.B. & Culver, G.G.
Item Type: Refine your search to only Article
open access

Effect of Scaling on Downhole Pressure Transient Data

Description: Test data from several wells where scale either formed in the wellbore or in the reservoir have been observed. Some generalizations can be made about the behavior of downhole and wellhead pressure during drawdown and build-up. In addition, estimates of the size of the obstruction can be made in the field. Reservoir parameters can be calculated from pressure build-ups, after the problem of downhole scaling has been identified.
Date: December 15, 1983
Creator: Petty, Susan
Item Type: Refine your search to only Article
open access

Effects of Natural Recharge on Gas Composition in the Larderello - Castelnuovo Area

Description: A study of the temporal behaviour of gas compsition in the Larderello-Castelnuovo area shows that this behaviour varies, depending on whether the wells are affected or not by natural recharge. Where no natural recharge exists, gas composition seems to be governed by chemical equilibria. The recharge water, and the steam it produces, mix with the fluid already existing in the reservoir. At Larderello (far from absorption areas) the gas composition resulting from this mixing does not undergo furt… more
Date: December 15, 1983
Creator: D'Amore, Franco; Celati, Romano; Calore, Claudio & Bertrami, Rino
Item Type: Refine your search to only Article
open access

Effects of voltage control in utility interactive dispersed storage and generation systems

Description: When a small generator is connected to the distribution system, the voltage at the point of interconnection is determined largely by the system and not the generator. This report examines the effect on the generator, on the load voltage and on the distribution system of a number of different voltage control strategies in the generator. Synchronous generators with three kinds of exciter control are considered, as well as induction generators and dc/ac inverters, with and without capacitor compen… more
Date: March 15, 1983
Creator: Kirkham, H. & Das, R.
Item Type: Refine your search to only Report
open access

Environmental, health, and safety assessment of photovoltaics

Description: Potential enviornmental, health, and safety (E,H and S) concerns associated with all phases of the photovoltaic (PV) energy system life cycle are identified and assessed. E,H and S concerns affecting the achievement of National PV Program goals or the viability of specific PV technologies are emphasized. The report is limited to near-term manufacturing process alternatives for crystalline silicon PV materials, addresses flat-plate and concentrator collector designs, and reviews system deploymen… more
Date: October 15, 1983
Creator: Rose, Elizabeth C.
Item Type: Refine your search to only Report
open access

Evaluating Geothermal Reserves with Application of Well Interference and Pressure Buildup Tests

Description: In order to evaluate geothermal reserves, it is necessary to estimate the porosity-thickness product of the reservoir. This paper deals with the method for estimating the porosity-thickness product of geothermal reservoirs by means of combining well interference and pressure buildup tests. A field study from the Chingshui geothermal area in Taiwan is given to illustrate the application of the method.
Date: December 15, 1983
Creator: Chiu, T. L.; Chiang, C. Y. & Wu, T. S.
Item Type: Refine your search to only Article
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