Corrosion in the water and waste industries. Hrsg. Michael J. Szeliga, 582 Seiten, NACE International, Houston, USA, 1996, $ 127.00 (List), $ 97.00 (NACE Member), ISBN 1‐877914‐98‐3

Corrosion behaviour of X52 pipeline steel in high H2S concentration solutions at temperatures ranging from 25°C to 140°C

“…7 with the increase of test temperature there was a progression of major product variation from iron rich to sulphur rich products according to the sequence: mackinawite→troilite→pyrrhotite. This is in agreement with the Pourbaix diagrams11,32 – 34 developed for the prediction of iron sulphide formation under different conditions. These diagrams indicate that the stable region for sulphur rich sulphides extend towards low pH and low potentials with the increase in temperature and H 2 S concentration.…”

“…H 2 S (hydrogen sulphide) corrosion of pipeline steel is always a significant problem for the oil and gas industries 1 – 4. Although many investigations have been carried out to understand the corrosion mechanism since the 1940s, there are still different and even contradictory understandings and theories 1.…”

“…H 2 S (hydrogen sulphide) corrosion of pipeline steel is always a significant problem for the oil and gas industries 1 – 4. Although many investigations have been carried out to understand the corrosion mechanism since the 1940s, there are still different and even contradictory understandings and theories 1. Along with deep exploitation of oil and gas, H 2 S corrosion becomes much severer as the water salinity, the service temperature and the H 2 S partial pressure increase 2.…”

“…Although many investigations have been carried out to understand the corrosion mechanism since the 1940s, there are still different and even contradictory understandings and theories 1. Along with deep exploitation of oil and gas, H 2 S corrosion becomes much severer as the water salinity, the service temperature and the H 2 S partial pressure increase 2. The content of hydrogen sulphide in some wells is more than 10%, where the H 2 S partial pressure reaches about 3 MPa, and the temperature reaches 95-115°C in the Sichuan sour gas field in China 5.…”

“…Temperature and partial pressure directly affected the morphology and composition of corrosion products, which in turn caused the change of corrosion rate and occurrence of localised corrosion. The corrosion mechanism of carbon steel under these severe conditions is poorly understood 1. As a result of this limitation, it is difficult to carry out anticorrosion design, so it became an urgency to investigate the corrosion behaviour and mechanism of carbon steel under these severe conditions.…”