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Geothermal down-well instrumentation. Final report

Description: Work to develop a telemetry link between a Sperry downwell geothermal turbo-pump and the well-head, without the requirement for cables within the pipe-string, is described. Two methods were studied, built, and tested in a well at Heber, California, during the first field tests on the pump. These were: (a) an acoustic scheme which transmitted a modulated 4 kHz acoustic carrier on the pipe-string and (b) an electromagnetic scheme which used the exhaust steam pipe annulus as a coaxial transmission… more
Date: April 1, 1977
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

LOFT differential pressure uncertainty analysis

Description: A performance analysis of the LOFT differential pressure (..delta..P) measurement is presented. Along with completed descriptions of test programs and theoretical studies that have been conducted on the ..delta..P, specific sources of measurement uncertainty are identified, quantified, and combined to provide an assessment of the ability of this measurement to satisfy the SDD 1.4.1C (June 1975) requirement of measurement of differential pressure.
Date: March 1, 1977
Creator: Evans, R.P.; Biladeau, G.L. & Quinn, P.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Principles of operation and data reduction techniques for the loft drag disc turbine transducer

Description: An analysis of the single- and two-phase flow data applicable to the loss-of-fluid test (LOFT) is presented for the LOFT drag turbine transducer. Analytical models which were employed to correlate the experimental data are presented.
Date: September 1, 1977
Creator: Silverman, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Summary of Geoscience's design studies for the rod heat flux transducer and the thermal conductivity probe

Description: Structural strength calculations are presented for a rod heat flux transducer, thermal conductivity probe, and cable and electrical connectors. Design drawings are included. (MHR)
Date: August 1, 1977
Creator: Sellers, A.J.; Connelly, D. J.; Poppendiek, H. F. & Sabin, C. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ultra high temperature instrumentation amplifier. Midterm progress report, September 1976-March 1977

Description: The design of a downhole instrumentation amplifier to support geothermal well logging without thermal protection at temperatures up to 500/sup 0/C is described. The basic approach is to provide signal conditioning for a transducer, amplify the transducer output and transmit this amplified signal over long electrical cables to the surface for further processing and recording. Ceramic vacuum tubes are used as the active circuit elements to obtain this very high temperature capability. The design … more
Date: April 1, 1977
Creator: Kelly, R.D.; Cannon, W.L. & C.P., Morse
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Thin rod heat flux transducer positioned in the earth having a uniform temperature gradient: a closed form solution

Description: Signals from a thin rod heat flux transducer will be measured and translated into a geothermal heat flux. A mathematical temperature solution has been developed for an idealized thin rod positioned in an infinite solid with a uniform temperature gradient. This solution approximates the actual temperature to be encountered in the transducer when located in a drillhole. The solution is a closed form type for a thin rod wherein radial temperature differences are small compared to axial ones; the s… more
Date: February 1, 1977
Creator: Poppendiek, H. F. & Connelly, D. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Laboratory tests for a model thin rod heat flux transducer

Description: A model of a thin rod heat flux transducer was constructed for the purpose of performing some laboratory performance verification tests (prior to shallow hole testing). The model was installed in a sand volume that had a controlled vertical linear temperature gradient at its boundary. At steady state, transducer thermopile outputs and peripheral vertical sand temperature gradients were measured. From the rod heat flux transducer theory previously developed and these measurements, the thermal co… more
Date: June 1, 1977
Creator: Poppendiek, H. F. & Connelly, D. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Feasibility investigation and design study of optical well logging methods for high temperature geothermal wells. Final report

Description: The results are reported of a one-year program designed to investigate the feasibility of optical techniques applied to well-logging, to extend measurement capabilities in high-temperature geothermal boreholes. The basic concept is shown schematically. It makes use of a special armored cable containing fiber optic wave guides, connected to passive, downhole optical transducers. The latter modulate an optical carrier in response to borehole parameters. The optical carrier is a beam of infrared l… more
Date: December 1, 1977
Creator: Swanson, R. K.; Anderson, R. E.; Ash, J. I.; Beissner, R. E. & Smith, V. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effects of a fluid annulus on the performance of thermal transducers in a bore hole: sensitivity analyses

Description: The subject down-hole thermal transducer development program relates to two different transducer types. One is used to measure the geothermal heat flux under steady state conditions and the other one is used to determine the thermal conductivity and thermal capacity of the earth. In both instances, the measurements are made in place in a bore hole and no core sampling is required. When inserting these transducers into the bore hole, it is clear that a fluid annulus exists between the transducer… more
Date: August 1, 1977
Creator: Poppendiek, H. F. & Connelly, D. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Feasibility investigation and design study of optical well logging methods for high temperature geothermal wells. Semiannual technical progress report, 30 September 1976-31 March 1977

Description: Measurement of the absorption-edge in the compound semiconductor GaAs shows that changes in temperature over a range from 200 to 500/sup 0/C produce a cut-off transmission wavelength approximately coincident with the optimum spectral transmission region of quartz optical fibers. Thin GaAs elements are thus shown to be suitable for use as passive optical temperature transducers in the logging of high temperature geothermal wells in conjunction with fiber-optic cables. Stress effects on the optic… more
Date: April 1, 1977
Creator: Swanson, R. K.; Beissner, R. E.; Smith, V. D. & Fogwell, J. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

EPMT: a portable transfer standard for telemetry system pressure-transducer calibration

Description: The LLL developed electronic pressure meter (EPMT) is a portable static-pressure calibration instrument for use with the LLL telemetry transducer system at the Nevada Test Site (NTS). It is significantly more accurate and rugged than the bourdon-tube pressure gauge it replaces, and can be incorporated into a field-use, semi-automatic, pressure calibration system. The process by which a transducer is selected for EPMT use from the inventory of field-service-certified transducers and subjected to… more
Date: April 5, 1977
Creator: Hasbrouck, Richard T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

LMFBR transducer performance in SLSF tests P1 and P2

Description: The reliability and problem areas of sodium-immersed thermocouples, pressure transducers and flowmeters are presented for experiments P1 and P2 of the Sodium Loop Safety Facility (SLSF). The SLSF is a doubly-contained sodium loop situated in a core position of the Engineering Test Reactor at the Idaho National Engineering Laboratory.
Date: January 1, 1977
Creator: English, J. J.; Anderson, T. T.; Kuzay, T. M.; Wilson, R. E.; Pedersen, D. R.; Kaiser, W. C. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Helium research in support of superconducting power transmission. Annual report, July 1975--September 1976

Description: This is the second annual report of research on helium related problems in support of superconducting power transmission development. Results are presented from experimental and computer modeling of the performance of current leads cooled with supercritical helium gas. Performance characteristics studied are burn-out conditions and existence of oscillation in the helium gas. Some conclusions on the feasibility of data transmission from high-voltage regions to grounded read-out instrumentation, … more
Date: February 1, 1977
Creator: Jones, M. C.; Arp, V. D.; Parrish, W. R.; Daney, D. E.; Ludke, P. R.; Frederick, N. V. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Piezoelectric sensor pen for dynamic signature verification

Description: The concept of using handwriting dynamics for electronic identification is discussed. A piezoelectric sensor pen for obtaining the pen point dynamics during writing is described. Design equations are derived and details of an operating device are presented. Typical output waveforms are shown to demonstrate the operation of the pen and to show the dissimilarities between dynamics of a genuine signature and an attempted forgery.
Date: January 1, 1977
Creator: EerNisse, E. P.; Land, C. E. & Snelling, J. B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Quarterly progress report to Nuclear Regulatory Commission, Division of Reactor Safety Research, Fuel Behavior Research Branch programs for period ending March 1977. [PWR and BWR]

Description: Information is presented concerning experimental verification of steady-state fuel behavior codes program, fuel subassembly procurement and irradiation test program, and pressure transducer development program.
Date: April 1, 1977
Creator: Bailey, W. J. (comp.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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