AMPP Store - Products tagged with 'sulfide stress cracking'

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Effect of Ni on Sulfide Stress Cracking and Stress Grooving in Carbon Steel - Part 1: Constant-load (Dead-weight) Test

Product Number: 51324-20715-SG

Author: Taishi Fujishiro; Taro Muraki; Nobuyuki Ishikawa; Daichi Izumi; Takuya Hara

Publication Date: 2024

$40.00

Sulfide stress cracking (SSC) occurs in steel exposed to sour environments. Ni promotes the formation of a crack-like corrosion morphology (so-called stress groove or fissure), which accelerates the SSC; however, the mechanisms underlying fissure formation and growth are not fully understood. In this study, the effects of Ni on SSC and fissures were investigated. Constant-load tests were conducted at various potentials using TS 800 MPa grade steel with and without 1 % Ni addition. The fissures were formed near the corrosion potential on adding Ni. Anodic or cathodic polarization promoted SSC, suggesting that SSC was affected by both active path corrosion (APC) and hydrogen embrittlement (HE) mechanisms. In addition, the fissure shapes and crystal orientations of the microstructure were analyzed to classify the fissures as dissolution (corrosion) or mechanical cracking. Further, characteristic grooves promoted by Ni were confirmed to be APC.

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Effect of Ni on Sulfide Stress Cracking and Stress Grooving in Carbon Steel - Part 2: Four Point Bend Test

Product Number: 51324-20709-SG

Author: Nobuyuki Ishikawa; Taishi Fujishiro; Eiji Tada; Daichi Izumi; Junji Shimamura

Publication Date: 2024

$40.00

Four point bend sulfide stress cracking (SSC) tests were carried out under various conditions of H2S partial pressure, pH, soaking time, and applied stress to investigate the formation of stress groove (or fissure) and SSC behavior in TS 800 MPa (116 ksi) grade steel plates with 1%Ni added and 0% Ni steels. Under low hydrogen sulfide (H2S) partial pressure conditions, a fissure was formed only in the 1%Ni steel, although no SSC occurred. Morphology of the fissure in 1% Ni steel indicates that fissure extends by a corrosion, which is also called the anodic dissolution or the active path corrosion (APC). The fissure in 1%Ni steel grew almost linearly with soaking time in the test solution with stabilized pH condition. Formation and growth of fissure was enhanced by higher applied stress and there was a limiting stress for the formation of fissure. SSC occurred in both steels under high H2S partial pressure and low pH conditions. Detailed metallographic investigation for SSC cracks revealed that a corrosion pit initially formed then turned into a crack possibly by hydrogen embrittlement (HE), then finally caused unstable crack extension to rapture the specimen. Based on the experimental results for the fissure formation and SSC, the effect of both APC and HE are discussed.

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Effect of Plastic Strain on Hydrogen Absorption of Low Alloy Carbon Steel for Linepipe

Product Number: 51323-19139-SG

Author: Taishi Fujishiro, Yusaku Tomio, Taro Muraki, Takuya Hara

Publication Date: 2023

$20.00

In the oil and gas industry, oil country tubular goods and linepipes are exposed to the wet H2S environment (sour environment) in some cases. The presence of H2S promotes hydrogen entry into steel due to the catalytic action of H2S. The absorbed hydrogen enhanced by H2S affects hydrogen embrittlement.

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Effect of Side Groove Geometry on Crack Propagation Behavior and K1SSC in DCB Test

Product Number: 51321-16341-SG

Author: Yuji Arai/Jun Nakamura/Hiroki Kamitani/Keiichi Kondo/Hisashi Amaya/Taishi Fujishiro

Publication Date: 2021

$20.00

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Effect of Surface Hardness Distribution on SSC Propagation Behavior in Grade X65 Linepipe

Product Number: 51323-19238-SG

Author: Junji Shimamura, Daichi Izumi, Mitsuhiko Hakoda, Joe Kondo, Mohammed A. Alanezi, Yasser S. AlSubhi, Satoshi Yamaguchi

Publication Date: 2023

$20.00

Application of sour linepipes has expanded toward severe sour environment regions including higher H2S partial pressure conditions. In 2013, actual sour gas pipeline failure occurred due to SSC (Newbury et al., 2018). One of the possible root cause of SSC was assumed to be a formation of hard spots in a
surface region of steel. Fairchild et al. investigated and proposed three hard zone formation mechanisms including carbon contamination, dual phase microstructure and heat transfer variation in a recent paper (Fairchild et al., 2019; Newbury et al., 2019).

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Environmentally-Assisted Cracking (SSC And SCC) Of Martensitic Stainless Steel OCTG Material In Sour Environment In 5%Nacl And 20%Nacl Solution

Product Number: 51322-17563-SG

Author: Yuichi Kamo, Yusuke Mizuno, Yasuhide Ishiguro

Publication Date: 2022

$20.00

Martensitic stainless steels for OCTG materials are widely used in sweet and mild sour conditions. Environmentally-assisted cracking (EAC) is a major corrosion-related issue when using stainless steels as OCTG materials. The EAC in specific oil/gas well conditions with sour environments is defined as sulfide stress cracking (SSC) and stress corrosion cracking (SCC). The SSC is a type of cracking caused by hydrogen embrittlement, which is attributed to a cathodic reaction under acidic conditions, while SCC is associated with an anodic reaction. SSC testing for martensitic stainless steels for OCTG material is often carried out at or near ambient temperature under conditions simulating condensed water, and SCC tests are conducted at higher temperatures under conditions simulating formation water and/or the brine availability test.

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Evaluation Of Titanium 475 Alloy For Use In Oil And Gas Environments

Product Number: 51322-17840-SG

Author: William. D. MacDonald, Mikel Hogan, Dennis Dunlap

Publication Date: 2022

$20.00

ASTM Grade 29 titanium alloy (UNS R56404) has been traditionally used for oil and gas stress joints (TSJ). However, given the general difficulty of processing this type of alloy in the beta quenched condition and more recently the exorbitant increase in alloying costs due to the ruthenium, a new solution is required if titanium is to be considered for future applications. This 475 alloy was developed to meet geothermal requirements to replace Grade 29 seamless casing. The essential material properties of Grade 29 in bulk and welded condition as used for titanium stress joints were reported by Shutz et al.

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From Pits To Cracks: A Review Of 45-Years Of Published Research On Surface Trenches In Low Alloy Steels Exposed To H2S-Containing Environments

Product Number: 51322-17957-SG

Author: Dannisa R. Chalfoun, Teresa E. Perez, Mariano Iannuzzi, Mariano A. Kappes

Publication Date: 2022

$20.00

Carbon and low alloy steels (CS and LAS, respectively) used for exploration and production in the oil and gas (O&G) industry are normally exposed to environments that may contain H₂S in a wide range of concentrations. In aqueous solutions, H₂S acts as a cathodic poison.^1,2 A cathodic poison inhibits the recombination of atomic hydrogen to H₂, and as a result, favors its absorption by the metal.^1,2 In the presence of a susceptible microstructure and the simultaneous effect of applied or residual tensile stress, a crack can nucleate and propagate, when a critical concentration of hydrogen is reached in the metal.³ This environmentally assisted cracking (EAC) phenomenon is known as Sulfide Stress Cracking (SSC).² SSC is commonly addressed as a case of hydrogen embrittlement (HE) damage.²

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Investigation of Sulfide Stress Crack Propagation Using Sour Pipe Burst in Tubulars with Simulated Defects under Pressure

Product Number: 51324-20420-SG

Author: Brian Chambers; Bostjan Bezensek; Sebastian Cravero; Pedro Olivo; Octavio Albores

Publication Date: 2024

$40.00

Seamless oil country tubular goods (OCTG) with defined chemistry and toughness, e.g. API 5CT C110, are utilized as production casing in sour wells globally. These grades must withstand high pressures and mild sour conditions to maintain the integrity of the well and, as such, should resist both sulfide stress crack (SSC) initiation and potential propagation from defects in service. A laboratory study was conducted to assess the tendency of crack propagation from two defined types of defects, electro-discharge machined (EDM) notches and fatigue cracks, simulating potential as-delivered OCTG tubulars. The tubulars were subjected to a variety of test conditions including two temperatures, 4ºC and 24ºC, internal pressures ranging from 550 to 1,100 bar, and exposure to a modified NACE TM0177 Solution B equilibrated with 7% H2S/N2 gas purge. The applied pressure and depth of defects were used to determined applied stress intensity values, K, for each condition to compare tests with one another and to traditional small-scale evaluations per NACE TM0177 Method D, single edge notched tensile (SENT), and constant K compact tension (CT). The findings indicated that tendency towards SSC propagation was principally dependent on type of defect, temperature, and applied K. Threshold K values for SSC propagation from EDM-type defects were higher than determined from any of the small-scale evaluation methods. Fatigue pre-cracks were demonstrated to be more aggressive in promoting SSC propagation compared to EDM-type defects.

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Modeling and Experimental Insights of Sulfide Stress Cracking Corrosion Mechanism

Product Number: 51317--9328-SG

ISBN: 9328 2017 CP

Author: Daniella Sales

Publication Date: 2017

$20.00

A model was built that describes stress field and hydrogen activity at the direct vicinity of a crack tip. A second model was based on the cohesive zone simulates the kinetic of a crack growth. Experiments using hydrogen permeation under stress on flat un-notched & notched specimens yielded data comparable to the simulations.

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MR0175-1993, Sulfide Stress Cracking Resistant Metallic Materials for Oilfield Equipment

Product Number: 53024-HD1993

ISBN: MR0175-93

Author: NACE

Publication Date: 1993

$179.00

Metallic material requirements for resistance to sulfide stress cracking (SSC) for petroleum production, drilling, gathering and flowline equipment, and field processing facilities to be used in H2S-bearing hydrocarbon service. Historical Document 1993

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NACE TM0177-2005, Laboratory Testing of Metals for Resistance to Sulfide Stress Cracking and Stress Corrosion Cracking in H2S Environments

Product Number: NACE TM0177-2005

Publication Date: 2005

$179.00

HISTORICAL DOCUMENT.

This standard addresses the testing of metals for resistance to cracking failure under the combined action of tensile stress and corrosion in aqueous environments containing hydrogen sulfide (H2S). This phenomenon is generally termed sulfide stress cracking (SSC) when operating at room temperature and stress corrosion cracking (SCC) when operating at higher temperatures. In recognition of the variation with temperature and with different materials this phenomenon is herein called environmental cracking (EC). For the purposes of this standard, EC includes only SSC, SCC, and hydrogen stress cracking (HSC).

Products tagged with 'sulfide stress cracking'

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