AMPP Store - Individual Conference Papers

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On The Adsorption Properties Of Non-Surfactant Corrosion Inhibitors: Pyridine, Quinoline And Acridine

Product Number: 51321-16686-SG

Author: Jose Vera; Ashwini Chandra; Kevin Ralston; William Durnie; Richard Woodllam

Publication Date: 2021

$20.00

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On the applicability of welded J55 line pipe steel for underground hydrogen storage

Product Number: 51323-19131-SG

Author: Bernd Loder, Gregor Mori, Jürgen Klarner, Michael Fiedler, Thomas Willidal

Publication Date: 2023

$20.00

Corrosive environmental media may lead to a significant degradation of the mechanical properties of the materials. Individual experimental investigation and analysis concepts are available at the Institute of General and Analytical Chemistry for the evaluation of different materials under pressurized hydrogen. Hydrogen technologies will enable decarbonization.

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On the choice of applied potential in ex situ testing of bipolar plate materials

Product Number: 51323-19547-SG

Author: Gareth Hinds

Publication Date: 2023

$20.00

Electrochemical energy conversion devices, such as fuel cells and electrolyzers, are widely recognized as an essential component of the transition to a low carbon economy. Polymer electrolyte membrane (PEM) variants of both technologies show particular promise due to their high current density, fast start-up times and low gas crossover rates. The main barrier to widespread uptake of these devices is their capital cost, which includes both raw material and manufacturing costs.

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On The Corrosion Of Commercial Coatings, Surface Treatments, And Carbides For Servicing Equipment Operating In Highly Soured Production Environments

Product Number: 51321-16532-SG

Author: Manuel Marya

Publication Date: 2021

$20.00

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On the Effects of Test Frequency and Crack Driving Force on the Crack Growth Rate Behavior of 4340 Steel

Product Number: 51323-19429-SG

Author: W. Fassett Hickey, Matt Rahimi, Bob Cowan, Tony Nguyen

Publication Date: 2023

$20.00

Crack growth rate properties are used to assess life and integrity to determine appropriate operating conditions and service life; permissible flaw sizes; and defining minimum detectable flaw size requirements for non-destructive evaluations (NDE). In corrosion-fatigue environments, it is important to characterize the corrosion-fatigue crack growth behavior at a frequency that allows maximum interaction between the material and the environment to ensure that test conditions are suitably representative of service conditions and appropriately conservative.

A crucial step in qualifying a material for use in a critical engineering application in oil and gas production is quantifying the effect of test frequency on the FCGRs of the material in a representative environment.

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On the Efficiency of Gypsum Scale Inhibition by Phosphonates: The Role of Molecular Architecture

Product Number: 51319-12921-SG

Author: Petros Koutsoukos

Publication Date: 2019

$20.00

The precipitation of calcium sulphate dihydrate (CaSO4.2H2O gypsum) was studied at 25 ° C at constant calcium ion activity. The stability domain of the system and the kinetics of spontaneous precipitation of gypsum from unstable supersaturated solutions was investigated. The rates of precipitation showed parabolic dependence on the relative supersaturation in agreement with literature reports for lower supersaturations and seeded growth. Moreover the kinetics of precipitation of gypsum at sustained calcium ion activity at 25 ° C pH 6.5 were measured in the presence of two phosphonates: benzo (135-triyltrisphosphonic acid (BTP) and 135-triazine triphosphonate (TATPA) over a range of concentrations between 4-16 ppm. The presence of TATPA resulted in significant reduction of the rate of gypsum precipitation which reached total suppression of nucleation and growth at the highest test concentration. BTP showed also inhibition effect which was however lower. The differences in inhibition efficiency are attributed to molecular characteristics including flexibility and hydrogen bonding capacity.

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On The Load Ratio Equation in API TR 5C3 for Evaluation of Pipe Body Fracture Performance

Product Number: 51321-16567-SG

Author: Bisen Lin/ David Coe

Publication Date: 2021

$20.00

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On The Performance Of UNS S32100 vs N08825 Expansion Compensator Materials In Geothermal Applications

Product Number: 51322-17790-SG

Author: Keith Lichti, Soroor Ghaziof

Publication Date: 2022

$20.00

Geothermal fluid pipelines experience temperature changes on startup and shutdown that can be of the order 300 °C. Carbon steel pipeline design can include expansion loops and direction changes to allow for thermal expansion and contraction for the long lengths of pipeline commonly used from geothermal production wells to the geothermal power station and from the station to reinjection wells. In some instances, expansion compensators are used where there is insufficient area for such loops or where the pipe diameter is prohibitively large.

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On the Pitting Corrosion Resistance of Metallic Materials Used in Drilling and Reservoir Characterization Applications

Product Number: 51324-20872-SG

Author: Helmuth Sarmiento Klapper; Julia Ditmann; Sebastian Jesse

Publication Date: 2024

$40.00

Because of their versatility CrMn-stainless steels have become the most used structural materials in directional and while-drilling reservoir characterization tools. Nevertheless, pitting and environmentally assisted cracking (EAC) are a major concern when these materials are subjected to high halide-containing water-based drilling fluids at elevated temperatures. Consequently, pitting corrosion resistance becomes a crucial property to guarantee operational reliability and integrity of drilling equipment. Indeed, nickel-stabilized austenitic stainless steels and super austenitic stainless steels with higher contents of chromium and molybdenum have been recently developed as alternatives in drilling operations involving harsh environments. In this study, the pitting and repassivation behavior of several grades used in drilling technology was investigated using electrochemical methods. The tests were conducted in brines with different pH-values at temperatures ranging from ambient temperature to 150 °C. Experimental results are compared to PREN-Mod and CPT-values as well as to results from ASTM G48 Method A. The experimental data provided in this paper demonstrates the lack of correlation between the real pitting resistance of most grades commonly used in drilling equipment in brines at elevated temperatures and the commonly used PREN-Mod values. In addition, the limited applicability of results from standardized test methodologies for predicting pitting susceptibility in service is confirmed. The discussed electrochemical results provide on the other hand a more suitable basis for defining criteria regarding materials selection in drilling technology.

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On the Sea Water Corrosion Resistance of Alloy 825 CTP (UNS N08827), an Improved Version of Alloy 825 (UNS N08825)

Product Number: 51324-20983-SG

Author: Julia Botinha; Katharina Utens; Philipp Huebner; Daniela Zander; Helena Alves

Publication Date: 2024

$40.00

UNS(1) N08827, commercially called Alloy 825 CTP(2), represents a significant advancement of UNS N08825 (Alloy 825)(2) by virtue of its tailored chemical composition, resulting in enhanced localized corrosion resistance. The key modification in UNS N08827 involves a notable augmentation in molybdenum content, which has been raised to approximately 6%, twice the amount found in the conventional UNS N08825, which contains 3% molybdenum. Consequently, this alloy surpasses a critical threshold for the pitting resistance equivalent number (PREN) by exceeding 40, a prerequisite for specific applications within the oil and gas sector. Prior investigations have already demonstrated the heightened resistance of UNS N08827 to pitting and crevice corrosion when exposed to ferric chloride solutions, as evidenced by ASTM(3) G48 C and D tests. Building upon this foundation, the subsequent objective was to assess the corrosion performance of this alloy in an artificial seawater environment. This research paper presents the outcomes obtained from subjecting Alloy 825 CTP UNS N08827 to ASTM G61 and ASTM G150 tests, focusing on its corrosion behavior.

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On The Suitability Of ASTM 532 IIB Cr White Cast Irons For Erosion-Corrosion And Abrasion-Corrosion Applications

Product Number: 51321-17018-SG

Author: Jiaren (Jimmy) Jiang; Yongsong Xie; MD Aminul Islam; Baisheng Yao

Publication Date: 2021

$20.00

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On the Susceptibility of Precipitation Hardened Nickel Alloys to Hydrogen Assisted Cracking

Product Number: 51319-12846-SG

Author: Roberto Morana

Publication Date: 2019

$20.00

Precipitation Hardened (PH) Nickel alloys have been widely used in the Oil & Gas Industry for decades as these materials offer high strength and outstanding corrosion resistance in aggressive environments. They are commonly used in high-strength components in downhole wellhead subsea and Christmas tree equipment. However high profile failures of equipment have occurred including tubing hangers cross-overs and subsea bolts with alloys such as UNS N07718 UNS N07716 or UNS N07725. In all these cases the mechanism identified was Hydrogen Assisted Cracking (HAC) as the result of the interaction between atomic hydrogen adsorbed by the alloy and its microstructure.PH Nickel alloys are all subject to precipitation of secondary and tertiary phases which if processed improperly (particularly during hot working and heat treatment) may adversely affect the material properties required for the intended application. Despite the number of scientific and technical contributions produced over the last years the interaction between these complex microstructural features and atomic hydrogen is still not understood and is further complicated by variations in testing approaches used to simulate severe hydrogen charging conditions. The present paper provides insights on the HAC failure mechanism for API 6ACRA PH Nickel alloys comparing findings from numerous studies. In addition implications for currently adopted standards and emerging specifications are also presented and discussed.

Individual Conference Papers

Association for Materials Protection and Performance