Products tagged with 'high h2s partial pressure'

View as

Sort by

Display per page

Available for download

Improved Girth Welding On Seamless Linepipe For High H2S Partial Pressure Condition

Product Number: 51322-17710-SG

Author: Florian Thebault, Antoine Remy, Laurent Faivre, Sébastien Leconte

Publication Date: 2022

$20.00

NACE MR0175 / ISO 15156 document part 2 provides material requirements for selecting cast irons and low-alloy steels for sour environments.¹ Figure 1 is reproduced from this standard and describes different regions of environmental severity for Sulfide Stress Cracking (SSC): service in region 0 being the least susceptible to cracking, even for very sensitive materials, and region 3 being the worst.

Available for download

Qualification of Seamless X60QOS and X65QOS Line Pipe Grades for Extreme Sour Service Conditions with Partial Pressure of H2S beyond 1 Bar

Product Number: MPWT19-15127

Author: Florian THEBAULT, Laurent LADEUILLE, Harold EVIN, Laurent LAMPS

Publication Date: 2019

$0.00

Seamless X60QOS and X65QOS line pipes are widely used for offshore and onshore Sour Service applications. Sour Service refers to the risk of hydrogen related cracking as Sulfide Stress Cracking (SSC). The International standard (NACE MR0175 / ISO 15156) provides requirements for assessing the resistance to SSC, specifically on how to qualify for use in region 3 of the environmental severity diagram (Figure 1 in paragraph 7.2.1.2 of part 2). It is requested to expose materials in an acid solution saturated by 1 bar of H2S (NACE TM0177 Solution A) and to apply a tensile stress above 80% AYS by means of different methods: uniaxial tensile, C-ring or Four-Points Bend. However, for very sour fields presenting H2S partial pressures much higher than 1 bar, the preservation of the SSC resistance might be questioned and is presently a major concern for the O&G industry.
The present paper is dedicated to the evaluation of the SSC resistance of seamless quenched and tempered X65 grades, including the girth weld in the standard NACE TM0177 Solution A up to 15 bar of H2S partial pressure. Corrosion tests consisted of four-point bend tests performed in autoclave vessels. Different test configurations were investigated as specimen sampling locations through the wall thickness and surface state preparation.

Available for download

Qualification of seamless X60QOS and X65QOS linepipe grades for extreme sour service conditions with partial pressure of H2S beyond 1 bar

Product Number: 51320-14585-SG

Author: Florian Thebault, Laurent Ladeuille, Laurent Lamps, Harold Evin

Publication Date: 2020

$20.00

Seamless X60QOS and X65QOS linepipes are widely used for Sour Service offshore and onshore applications. Sour Service refers to the risk of hydrogen related cracking, such as by Sulfide Stress Cracking (SSC). The International standard NACE MR0175 / ISO 15156 provides requirements for assessing the resistance to SSC, specifically on how to qualify for use in region 3 of the environmental severity diagram (Figure 1 in paragraph 7.2.1.2 of part 2). Qualification requires exposing materials in an acid solution saturated by 1 bar of H2S (NACE TM0177 Solution A) and to apply a tensile stress above 80% AYS by means of different methods: uniaxial tensile, C-ring or Four-Point Bend. However, for very sour fields presenting H2S partial pressures much greater than 1 bar, the preservation of the SSC resistance might be questioned and is presently a major concern for the O&G industry.

Products tagged with 'high h2s partial pressure'

Improved Girth Welding On Seamless Linepipe For High H2S Partial Pressure Condition

Qualification of Seamless X60QOS and X65QOS Line Pipe Grades for Extreme Sour Service Conditions with Partial Pressure of H2S beyond 1 Bar

Qualification of seamless X60QOS and X65QOS linepipe grades for extreme sour service conditions with partial pressure of H2S beyond 1 bar

Association for Materials Protection and Performance