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Development of High Strength grade and Cost Effective Super Martensitic Stainless Steel Solution for high CO2/H2S environment

Picture for Development of High Strength grade and Cost Effective Super Martensitic Stainless Steel Solution for high CO2/H2S environment
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Super martensitic stainless steel (13Cr-5Ni-2Mo) provides high strength and CO2 resistance. It can be used at high temperature up to 180°C/356°F in high chloride environment. When the well temperature is above 180°C/356°F, Duplex grades 22-5-3 or Super Duplex 25-7-4 grades are commonly selected as per API 5CRA standard.
A new proprietary grade chemistry has been developed to provide improved strength up to 125ksi and higher pitting resistance while maintaining a tempered martensitic microstructure with low delta ferrite content and no detrimental phases or precipitates. Improvement of pitting resistance has been assessed through cyclic polarization curves. Higher sulfide stress cracking (SSC) and stress corrosion cracking (SCC) were assessed through NACE(1) TM 0177 method A 1 at ambient and high temperature. X-ray Photoelectron Spectroscopy (XPS) characterizations provide deep knowledge about passive film compositions underlining the beneficial effect of higher Mo within the grade.
This paper presents the benefit of the improved chemistry on sweet corrosion and sulfide stress cracking in severe downhole environment. It summarizes the effect of different parameters in both production and shut-in conditions to be considered to select cost effective material.

Product Number: 51320-14715-SG
Author: Cécile Millet, Martien Deffo , Harold Evin, Guillaume Néel
Publication Date: 2020
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Picture for Sulfide Stress Cracking of Super 13Cr Martensitic Stainless Steel – Localized Corrosion and Hydrogen
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51318-11257-Sulfide Stress Cracking of Super 13Cr Martensitic Stainless Steel – Localized Corrosion and Hydrogen

Product Number: 51318-11257-SG
Author: Brian D. Chambers / Manuel Gonzalez / Yue Chen / Marc Wilms
Publication Date: 2018
$20.00

This paper provides an overview of the existing literature with regards to the understanding of cracking in molybdenum-containing 13Cr alloys and provides suggested paths of investigation.
Picture for Sulfide Stress Cracking (SSC) Resistance of AISI 420 Modified (13Cr) Martensitic Stainless Steel Bar
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51317--9645-Sulfide Stress Cracking (SSC) Resistance of AISI 420 Modified (13Cr) Martensitic Stainless Steel Bar

Product Number: 51317--9645-SG
ISBN: 9645 2017 CP
Author: Karthik Krishnan
Publication Date: 2017
$20.00

This paper discusses a study wherein the SSC resistance of 13Cr bar stock quenched and tempered to 22 HRC maximum hardness was tested and evaluated beyond the maximum H2S limit of 10 kPa (1.5 psi) established in NACE MR0175/ISO 15156-3 for use in sour service.

 
Picture for Super Martensitic Stainless Steel UNS41426 Bar Manufactured to Optimize Sour Service Performance
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51318-11123-Super Martensitic Stainless Steel UNS41426 Bar Manufactured to Optimize Sour Service Performance

Product Number: 51318-11123-SG
Author: Lee Smith / Chertsey Road / Lucrezia Scoppio / Perry Nice / Giuseppe Mortali / Daisuke Matsuo / Takuji Nakahata / Hisashi Amaya
Publication Date: 2018
$20.00

To explore if the sour service performance gap between SMSS tubular and bar stock could be overcome, work was conducted to optimize the performance of 110ksi specified minimum yield strength UNS(1) S41426 bar product.
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