235 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "150903 -- Geothermal Engineering-- Corrosion, Scaling & Materials Development"  
Results: 1 - 24 next
open access

Geothermal systems materials: a workshop/symposium

Description: Sixteen papers are included. A separate abstract was prepared for each. Summaries of workshops on the following topics are also included in the report: non-metallic materials, corrosion, materials selection, fluid chemistry, and failure analysis. (MHR)
Date: January 1, 1978
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Corrosion reference for geothermal downhole materials selection

Description: Geothermal downhole conditions that may affect the performance and reliability of selected materials and components used in the drilling, completion, logging, and production of geothermal wells are reviewed. The results of specific research and development efforts aimed at improvement of materials and components for downhole contact with the hostile physicochemical conditions of the geothermal reservoir are discussed. Materials and components covered are tubular goods, stainless steels and non-… more
Date: March 1, 1983
Creator: Ellis, Peter F., II; Keeney, Ronald C.; Kirk, Douglas K. & Conover, Marshall F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of a cavitating descaling technique for on-line geothermal pipe and component cleaning and scale removal. Final report

Description: The use of cavitation for cleaning and removing geothermal scale from pipes and system components is discussed. A study of the technical feasibility of using cavitation to remove scale is described including the preliminary fold test, the GLEF in-plant field demonstration, a production line cleaning trial, and recommendations. (MHR)
Date: January 1, 1980
Creator: Howard, S.C. & Bohli, W.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Short and long-term tests of elastomers with hot hostile fluids. Environmental Compatibility Test Program final report

Description: Equipment manufacturers and elastomer houses were called to find the best currently available high-temperature elastomers. Tensile specimens of 46 such compounds were immersion tested for five days in six 190C fluids of interest: isobutane, brine, ASTM No. 1 oil, ASTM No. 3 oil, Pacer DHT-185M synthetic oil, and Chevron Cylinder Grade 460X oil. The best eight were selected based upon the least change in mechanical properties. These eight were then simultaneously tested (a) by immersion in five … more
Date: December 30, 1982
Creator: Friese, G.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Progress and future directions in chemical methods for the control of scale at the Salton Sea Geothermal Field

Description: Using a pilot-sized brine handling system at the Salton Sea Geothermal Field, a series of field tests have been conducted in which various chemical compounds were examined as possible scale control agents. Results of these tests are mentioned with reference to publications on them. (MHR)
Date: April 1, 1980
Creator: Harrar, J.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Geothermal Elastomeric Materials Technology-Transfer (GEM-TT) Program. Final report

Description: The primary objective, to promote broad use of the earlier developed elastomers technology appears to have been successfully accomplished. The expertise was transferred to three rubber products manufacturers, and is currently commercially available. Significant substantiation of the viability of the technology was fostered through supporting and tracking numerous test efforts in various industry laboratories and out in the field. Numerous papers were presented on the technology and information … more
Date: December 1, 1982
Creator: Hirasuna, A.R.; Friese, G.J. & Stephens, C.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Treatment methods for geothermal brines

Description: A survey is made of commercially available methods currently in use as well as those which might be used to prevent scaling and corrosion in geothermal brines. More emphasis is placed on scaling. Treatments are classified as inhibitors, alterants and coagulants; they are applied to control scaling and corrosion in fresh and waste geothermal brines. Recommendations for research in brine treatment are described.
Date: April 1, 1979
Creator: Phillips, S. L.; Mathur, A. K. & Garrison, W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Geothermal Elastomeric Materials Technology Application (GEM-TA) Program: Final report, August 1981-August 1983

Description: In 1979, L'Garde, Inc. completed the development of several geothermal elastomer compounds. Major advances in the state of the art were achieved with successes at extreme conditions such as temperatures up to and exeeeding 320/sup 0/C (608/sup 0/F), pressures up to and exceeding 138 MPa (20,000 psi), and fluids ranging from brines to hydrocarbons. Because various geothermal projects had many elastomers problems and their solutions were critical to the project success, the DOE sponsored this eff… more
Date: August 1, 1984
Creator: Hirasuna, A. R.; Davis, D. L.; Friese, G. J. & Trailer, J. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of the improved corrosion rate meter and evaluation of commercially developed high-temperature pH electrodes. Interim report for period ending September 1981

Description: The continued development of the improved corrosion rate meter (ICR) and the initial laboratory evaluation of commercially developed pH electrodes are discussed. The objective of this work is to develop a more flexible instrument that would respond with correct corrosion rates under a wider range of conditions. The ICR was successfully tested in the field and in the laboratory. Although commercial corrosion rate meters (CCRs) are adequate for many situations, the ICR is the most versatile instr… more
Date: January 1, 1982
Creator: Danielson, M.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Design and fabrication of polymer-concrete pipe for testing in geothermal-energy processes. Final report

Description: Polymer concrete is a composite material which has strength and durability characteristics greatly superior to those of portland cement concrete and better durability in hot brine than steel. Polymer concrete has been successfully tested in brine, flashing brine, and steam at temperatures up to 260/sup 0/C (500/sup 0/F). Exposures were as long as 960 days. Glass-filament-wound polymer concrete pipe was developed with excellent strength, low weight, and a cost comparable to or less than Schedule… more
Date: July 1, 1981
Creator: Schroeder, J.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Detailed conceptual design of a high temperature glass pH electrode for geothermal applications. Final report. Task II

Description: The performance of a pH sensor for use in hot geothermal brine was determined by laboratory tests simulating the expected conditions of use. Tests were conducted at temperatures from 21/sup 0/C to 260/sup 0/C and pressures from atmospheric to 5000 psi. Probes were constructed according to the design recommended. Deficiencies were found in the areas of seal, stem glass integrity and glass stability in hot simulated brine. Modifications of the design were made and tested, the improved versions ov… more
Date: September 1, 1980
Creator: Taylor, R. M. & Phelan, D. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Enhancement of heat production through selective scaling

Description: The heat-depleted brine has to be reinjected whether it is for technical, economical, environmental and/or legal purposes. However, there are many problems related to injectivity and injectability in a geothermal field. The major drawback is the dread of an early breakthrough of the heat depleted brine at the production wells. It is believed that this drawback may be overcome through selective scaling. The results of investigation into the feasibility of selective scaling are summarized. Select… more
Date: August 16, 1982
Creator: Vetter, O.J.; Kandarpa, V. & Harouaka, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Potential polymer concrete heat exchanger tubes for corrosive environments

Description: It has long been known that carbon steel exposed to some geothermal brines is aggressively attacked, and large corrosion allowances must be made in the design of piping used in such environments. In addition, scaling of the pipes reduces the flow through within a short period of time. Several high temperature polymer concretes have been developed which can be used as non-corrosive liner materials. In addition, polymer concretes with high thermal conductivities have been developed which may be u… more
Date: November 1, 1986
Creator: Fontana, J.J.; Reams, W. & Cheng, H.C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Applicability of concrete polymer materials for use in geothermal environments

Description: The feasibility of using concrete polymer composites as materials of construction for handling hot brine was demonstrated in 1972. The results from these tests indicated that the composites had long-term stability in seawater at 177/sup 0/C and in acid solutions. Since then the work has been extended to develop materials for use in geothermal systems. To date, high temperature polymer concrete systems have been formulated, and laboratory and field tests performed in brine, flashing brine, and s… more
Date: April 1977
Creator: Kukacka, Lawrence E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Plant monitoring techniques and second generation designs

Description: Chemical and instrumental monitoring techniques suitable for geothermal use are described in a manner to relate them to plant operational problems and downtime avoidance. The use of these techniques permits the detection of scaling, the onset of scaling, corrosion loss, current corrosion rates and incipient heat exchanger failure. Conceptual advances are noted which simplify the research techniques to approaches that should be usable even in some low-capital well-head type power plants. 10 refs… more
Date: March 1, 1985
Creator: Kindle, C.H.; Shannon, D.W.; Robertus, R.J.; Pierce, D.D. & Sullivan, R.G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Cementing of geothermal wells. Progress report No. 3, October--December 1976

Description: A coordinated program for the development of improved cements specifically designed for geothermal well applications was started in April 1976. Since that time an assessment of the state of the art of well cementing has been made, a management plan prepared, and research on polymer cementing materials started. Plans to initiate research to develop inorganic cementing materials are being implemented. Work accomplished during the period October 1--December 31, 1976, is described in the current re… more
Date: December 1, 1976
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analysis of a scaling rate meter for geothermal systems

Description: A research project was conducted to investigate an experimental technique for measuring the rate of formation of mineral scale and corrosion in geothermal systems. A literature review was performed first to identify and evaluate available techniques for measuring scale in heat transfer equipment. As a result of these evaluations, a conceptual design was proposed for a geothermal Scaling Rate Meter (SRM) that would combine features of certain techniques used (or proposed for use) in other applic… more
Date: March 1, 1980
Creator: Kreid, D. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Geothermal analytical report

Description: Two samples were precracked by fatigue and exposed to separated geothermal brines in a closed autoclave. Final load and crack length were measured and a fractographic examination performed on compact double cantilever beam samples. The fractographs are shown. (MHR)
Date: December 10, 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen