Download or read book Hydrogen sulphide stress corrosion cracking in materials for geothermal power written by Alexander Robert Troiano and published by . This book was released on 1979 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrogen Sulphide Stress Corrosion Cracking in Materials for Geothermal Power written by A. R. Troiano and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrogen Sulphide Stress Corrosion Cracking in Materials for Geothermal Power Final Report Phase I written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Two point bent beam, NACE tensile, C-Ring and DCB stress intensity type specimens were employed to examine a series of steels' SSC resistance in the standard NACE solution and in several modifications pertinent to geothermal environments. Where direct comparisons were possible, the different types of tests qualitatively ranked the alloys in the same order. Of the commercially available steels examined suitable for downhole service, a fine-grained version of 4130 with additional Mo and some Cb appeared to have the highest yield strength break-point. High purity versions of this and similar type alloys did exhibit somewhat slightly better resistance to SSC. In this class of constructional type steels, those with higher carbon (.20 - 30C) and those requiring a higher tempering temperature to achieve a given yield strength appear to be more SSC resistant. These steels all exhibit a 15 to 20 percent higher yield strength break-point at service temperatures near 300 to 450°F and/or at pH values approaching 7. Several versions of well head equipment type steels with adequate hardenability have demonstrated satisfactory SSC threshold stress values at adequate yield strengths. The austenitic stainless steels displayed the usual sensitivity to chlorides and cold work. Overaging of several of the age hardenable variety improved the resistance to SSC with only a moderate reduction in strength. Two ferritic stainless steels have shown a higher threshold stress than their commonly employed counterpart. Examination of C-ring specimens cut from commercially treated casing and tubing clearly indicated the advantages of a tempered martensitic structure and the very real potential for temper embrittlement.
Download or read book Hydrogen Embrittlement and Stress Corrosion Cracking written by Alexander Robert Troiano and published by ASM International. This book was released on 1984-01-01 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geothermal Energy Update written by and published by . This book was released on 1978-06 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1968 with total page 1256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1980 with total page 1268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1980-10 with total page 1180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1986 with total page 1160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy a Continuing Bibliography with Indexes written by and published by . This book was released on 1980 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1977 with total page 1104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of Brine Treatment written by Sidney L. Phillips and published by . This book was released on 1977 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1980 with total page 1346 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Energy Resources Technology written by and published by . This book was released on 1981 with total page 778 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stress Corrosion Cracking in Metal Alloys Exposed to Corrosive Geothermal Fluids written by Katrina Belas Dacillo and published by . This book was released on 2016 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stress corrosion cracking (SCC) is caused by the simultaneous existence of stress, susceptible material and a corrosive environment. Geothermal wellbores producing corrosive geothermal fluids are at risk of SCC damage when subjected to stressed conditions such as intermittent shut-down and discharge activities. This study evaluates the SCC resistance in corrosive geothermal fluids of carbon steels, stainless steels, nickel-base alloys and titanium-base alloys with potential use as casing materials in geothermal wells. Field tests were conducted using plastically deformed U-bend coupons exposed to the following geothermal fluid conditions: (1) two-phase acid-SO42− chloride fluids at pHave = 3.5, temperature of 185±2°C and pressure of 1.14-1.16 MPa from geothermal well XM-02 for 35 days, and (b) almost superheated steam (h = 2745 kJ/kg, Tsat = 307°C) with 13.8% by weight non condensable gases (NCG) from geothermal well HX-01 for 95 days. SCC susceptibility was measured through the appearance of a recognizable crack, integrity of passive scales, surface discontinuity manifestations, test fluid chemistry and alloy composition. SCC damage was diagnosed through gravimetric analysis, light microscopy, coupled environmental scanning electron microscopy - energy dispersive spectroscopy (ESEM-EDS), powder X-ray diffraction (XRD) and metallographic analysis. Field test results show that the two types of corrosive geothermal fluids promote passivation of the metals. Exposure to acid-SO42− fluids resulted in deposition of sphalerite (ZnS) scales on the metal surface while contact with the high NCG steam caused iron sulfide (troilite, pyrrhotite and mackinawite) scales to form. The scales were adherent but had a porous texture. The carbon steel samples did not sustain cracks but had pits that could serve as initiation sites for crack growth. No recognizable cracks were found on most of the corrosion resistant alloys (CRAs) except for the Ti-Gr 12 titanium-base alloy and the 5923 HMO nickel-base alloy exposed to acid-SO42− chloride fluids. An irregular surface defect was observed on the I625 nickel base alloys exposed to high NCG steam. Follow-up tests on the CRA samples to validate SCC resistance using other types of statically loaded specimens and to evaluate susceptibility to tribo-corrosion are recommended. Geochemical and corrosion modeling to predict stable phases at wellbore conditions and in-depth studies on the thermodynamic stability, kinetics and breakdown of passive scales formed on the alloys should also be considered.
Download or read book Materials and Corrosion Problems in Energy Systems written by and published by . This book was released on 1980 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
