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Sulfide Stress Cracking Fracture Toughness of 125 ksi Grade in Mild Sour Service Conditions

Picture for Sulfide Stress Cracking Fracture Toughness of 125 ksi Grade in Mild Sour Service Conditions
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NACE TM0177 Method D corrosion test is used on low alloyed steels in sour environments. A DCB testing program has been performed on 125 ksi grade sour service casings and couplings in 0.07 bar H2S gas for solving these issues and for providing meaningful KISSC values.

 

Product Number: 51317--9112-SG
ISBN: 9112 2017 CP
Author: Florian Thebault
Publication Date: 2017
Industry: Oil and Gas Production
$0.00
$20.00
$20.00

NACE TM0177 Method D corrosion test is very frequently used for the determination of the fracture toughness of low alloyed steels in sour environments. The use of the standard NACE Solution A environment saturated by 1 bar H2S allows an efficient quality control of OCTG products for order release but does not provide KISSC values for well design in fit-for-purpose conditions. This is more especially true for 125 ksi grade which is essentially used in mild sour conditions. However the definition of the most reliable test condition is still lacking consensus more particularly regarding the appropriate test duration and pH buffering. Consequently an extensive DCB testing program has been performed on 125 ksi grade sour service casing and coupling in 0.07 bar H2S gas for solving these issues and for providing meaningful KISSC values.

Key words: Microbial Influenced Corrosion (MIC), well injection, produced water, biocide, monitoring, QPCR, vPCR, cATP, DNA, RNA, culturing, comparison methods, ultraviolet, chemical free disinfection, field trial.

 

NACE TM0177 Method D corrosion test is very frequently used for the determination of the fracture toughness of low alloyed steels in sour environments. The use of the standard NACE Solution A environment saturated by 1 bar H2S allows an efficient quality control of OCTG products for order release but does not provide KISSC values for well design in fit-for-purpose conditions. This is more especially true for 125 ksi grade which is essentially used in mild sour conditions. However the definition of the most reliable test condition is still lacking consensus more particularly regarding the appropriate test duration and pH buffering. Consequently an extensive DCB testing program has been performed on 125 ksi grade sour service casing and coupling in 0.07 bar H2S gas for solving these issues and for providing meaningful KISSC values.

Key words: Microbial Influenced Corrosion (MIC), well injection, produced water, biocide, monitoring, QPCR, vPCR, cATP, DNA, RNA, culturing, comparison methods, ultraviolet, chemical free disinfection, field trial.

 

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Study of High Strength Low Alloy Steel OCTG with High Carbon Contents for Mildly Sour Service

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ISBN: 9051 2017 CP
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For development of further high-strength low-alloy steel OCTG for sour service, effects of carbon content on the strength, microstructure, and sulfide stress cracking (SSC) resistance of low-alloy steel were fundamentally investigated.
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ISBN: 9342 2017 CP
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The stainless steel 17-4 PH (H1150D) is a cost-effective alloy for oilfield components due to its combination of high strength, toughness, and good corrosion resistance. Plasma nitriding improves the surface strength of the 17-4 PH and this work suggests that the nitrided can the resistance to SSC.

 
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