AMPP Store - Products tagged with 'dcb'

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51316-7203-The Effect of Notch Configuration on NACE TM0177 DCB Elastic Compliance and Recommendations for Futu

Product Number: 51316-7203-SG

ISBN: 7203 2016 CP

Author: Karol Szklarz

Publication Date: 2016

$20.00

DCB compliance for the chevron notch 32 mm electric discharge machining (EDM) and 35 mm EDM crack starters were measured and compared. The program consisted of multiple direct load versus arm displacement measurements for all three configurations.

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51318-10920-High strength steel SSC evaluation in mild sour environments at ambient and high temperatures

Product Number: 51318-10920-SG

Author: James Wei / Manuel Gonzalez / Brian Chambers / Boris Thomas

Publication Date: 2018

$20.00

There is an increasing need to define the operating envelope for materials typically used as oil country tubular goods. This paper reports results of sulfide stress cracking (SSC) tests that were performed in mild sour environment at temperatures below 107°C.

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A Review Of Fit-For-Purpose Sour Tests Of Low Alloy Steels: Effects Of Buffer Chemistry And Purge Gas Composition

Product Number: 51321-16578-SG

Author: Brian Chambers / Manuel Gonzalez

Publication Date: 2021

$20.00

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Evaluation Of The KIEC Of UNS N07718 With And Without Delta Phase In Simulated Seawater With Cathodic Protection Using Double Cantilever Beam Tests

Product Number: 51321-16652-SG

Author: Adam C. Rowe; Suresh Divi

Publication Date: 2021

$20.00

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Impact of Test Method on Sulfide Stress Cracking Fracture Toughness

Product Number: 51323-19118-SG

Author: Florian Thebault, Christelle Gomes, Daniela Garcia

Publication Date: 2023

$20.00

When dealing with the risk of Sulfide Stress Cracking (SSC) of Oil Country Tubular Goods (OCTG) as casings and tubings, two main approaches are: either the determination of the threshold stress on a smooth tensile specimen (NACE TM0177 Method A) or the fracture toughness KISSC on a Double Cantilever Beam (DCB) specimen (NACE TM0177 Method D).
Relevance of KISSC for predicting the behavior of real pipes in service has been assessed in the frame of API PRAC project Phase II.1 Hollow tensile specimens sampled in the wall of sour service seamless pipes were exposed to sour environments either on Inner Diameter (ID), Outer Diameter (OD) or both and subjected to a tensile loading (see also references

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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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Optimization of Side-Groove Configuration of NACE Method D Testing

Product Number: 51323-19218-SG

Author: Hiroki Kamitani, Hisashi Amaya, Keiichi Kondo, Yuji Arai

Publication Date: 2023

$20.00

Corrosion resistance of low alloy steels for oil country tubular goods (OCTG) is a key point in order to select the suitable material. Among the corrosion test defined in NACE TM0177-2016, Double Cantilever Beam (DCB) testing in accordance with NACE TM0177-2016 Method D can be evaluated corrosion resistance as fracture toughness (K1ssc).

In this methodology, testing operators check the validity of the fracture surface to determine K1ssc in accordance with NACE TM0177 Method D 11.6. Edge cracking has been a big issue for industries.

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Procedure Proposition using a Compact SENT Geometry for Fracture Toughness Assessment in Sour Environment

Product Number: 51321-16463-SG

Author: Mourad Chekchaki /Christelle Gomes/Javier Alejandro Carreno/Pedro Filgueiras /Camila Finamore /Gabriel Jorge /Luciana Lima /Florian Thebault

Publication Date: 2021

$20.00

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Sour Crack Initiation and Propagation Assessment of P110 and Q125RY Casing Materials in Mild Sour Conditions

Product Number: 51324-20617-SG

Author: M. Yunovich; B.D. Chambers; B.J.C. Thomas

Publication Date: 2024

$40.00

Currently, API 5CT P110 and Q125 grades are not suitable for sour-service per ANSI/NACE MR0175 / ISO15156 below 175°F and 225°F, respectively; however, there are indications that the materials can be resistant to sulfide stress cracking (SSC) under certain conditions where a combination of hydrogen sulfide concentration, applied stress, pH, and temperature results in a less severe environment. The primary driver behind the work was to identify an acceptable combination of the above variables that could enable the use of P110 and restricted yield Q125 (Q125RY) grades in mildly sour wells. The scope of work included testing three heats each of grades of seamless P110 and Q125RY casing/coupling stock; the tested heats were received from multiple manufacturers. The P110 materials were evaluated using Method A per NACE TM0177 Standard Test Method at varying temperatures (24°, 40°, 48° and 60°C) and partial pressures/fugacities of hydrogen sulfide (0.14, 0.5, and 1 psi); all materials were tested via NACE TM0177 Method D at ambient conditions and 0.14 psi of H2S partial pressure to establish resistance to sulfide stress cracking (SSC) initiation and crack propagation.

Products tagged with 'dcb'

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