Personal menu

Search

Filters

Products tagged with 's13cr'

View as

Sort by

Display per page

Picture for Localized and Generalized Corrosion Evaluation of S13CR in Shale Oil & Gas Production Conditions

Available for download

Localized and Generalized Corrosion Evaluation of S13CR in Shale Oil & Gas Production Conditions

Product Number: 51324-21106-SG

Author: Merlin C. E. Bandeira; Felipe S. Assunção; Pedro Filgueiras; Kevin Schleiss; Rogaciano M. Moreira

Publication Date: 2024

$40.00

To understand the performance of S13CR on shale gas field, the ability of oxide layer to repassivate on erosion environment was investigated by means of electrochemical and rotating cage tests at 300 bar of total pressure with 10 bar of CO2, 1.2 mbar of H2S partial pressure with balance of nitrogen; sand particles concentration of 50g/L, 26% NaCl, stir velocity of 1,000 RPM and temperature of 115°C. Based on the results, it was observed stable potential (LPR) under erosion condition (with sand) when compared to reference test (without sand). Despite the huge amount of sand and the high rotation speed of the cage, the cyclic potentiodynamic polarization of S13CR on erosion test is quite similar to the reference test. Localized corrosion induced by erosional attack, investigated by RC tests, was not observed and the corrosion rate were similar in both conditions. Laboratory test results corroborate field caliper inspection after 12 months in service where the highest penetration was 9% of wall thickness, therefore below the API 5CRA recommendation of 12.5%. The penetration rates of laboratory test and field inspection were 0.2 and 0.5 mm/y, respectively.

Picture for Ripple Slow Strain Rate Test for SSC and SCC of Super 13Cr Martensitic Stainless Steel and 25Cr Super Duplex Stainless Steel Tubular Materials

Available for download

Ripple Slow Strain Rate Test for SSC and SCC of Super 13Cr Martensitic Stainless Steel and 25Cr Super Duplex Stainless Steel Tubular Materials

Product Number: 51324-20735-SG

Author: Chong Li

Publication Date: 2024

$40.00

Corrosion and environmental cracking tests are important for fitness-for-service (FFS) evaluation during the material selection and qualification process to ensure quality of tubular materials. Super 13Cr martensitic stainless steel and super duplex 25Cr stainless steel are commonly used as tubular materials in oil and gas production wells under corrosive environments containing CO2 and H2S. This study evaluated the sulfide stress cracking (SSC) behavior of super 13Cr martensitic stainless steel and stress corrosion cracking (SCC) behavior of 25Cr super duplex stainless steel by using ripple slow strain rate test (SSRT) or cyclic SSRT. Environmental conditions including temperature, H2S, pH and chloride concentrations were varied to develop a service envelope and/or a material performance quality control criterion. This paper also presents implementation of ripple SSRT testing methodology in author’s company best practices for 25Cr tubular material qualification.

Popular tags

View all