... behavior is also discussed. linepipe sour gas sulfide stress cracking Thermo-mechanical controlled processing Bainite hardness SSC crack propagation INTRODUCTION In the previous paper ⁵ , 4PB SSC tests as per NACE TM 0316 ⁶ revealed that SSC occurred when the inner surface...

... of different types of deposit at the pit cavity opening. The effects of deposit chemistry and morphology on the electrochemical dissolution behavior are discussed in terms of a transport-controlled model for pit propagation. Pitting corrosion artificial pits underdeposit corrosion iron sulfide sour gas...

... conditions. None of the samples exhibited secondary cracking after being tested in the Level VII environmental conditions. These results exhibit the excellent resistance of N07022 weld metal to severe sour gas environments. Abstract UNS N07022 alloy, with a nominal composition of Ni-21Cr-17Mo (wt.%), has...

... are the results and procedures from testing conducted using common GREs used in isolation gaskets. The below data is from immersion tests conducted with sweet and sour gas mixtures of 70/30 mol% CH4/CO2 and 18/71/11 mol% H2S/CH4/CO2 respectively for 14 days that have caused past failures of isolation gaskets. Non...

...thermoplastic lining liner insertion PA12 nylon diameter reduction sour gas hydrocarbon resistance INTRODUCTION Pipeline transport of sour hydrocarbons creates some difficulties in corrosion management. Chemical inhibition programs can be effective but the continuing costs including...

... ksi SMYS (758 Mpa). There is a lack of clarity on the suitability and safe operating envelope of this alloy in mildly sour gas environments. The environment limits of 13Cr4Ni1Mo material were assessed in order to evaluate future use, and to assess suitable operating limits for current applications...

...) oil and gas service, there have been a number of reported failures involving precipitation-strengthened Ni-base alloys. These failures were attributed to hydrogen embrittlement. Recent results of sour gas and hydrogen embrittlement testing of CW N07022 alloy will be presented. The test results of CW...

... and/or physical parameters which deposited elemental sulfur, leading to active corrosion causing hydrogen embrittlement. Diffuser Gas compressor failure sour gas failure investigation hydrogen embrittlement INTRODUCTION INVESTIGATIVE PROCEDURE After the diffuser was received, the following investigations...

... pits due to selective phase dissolution. It appears that the performance profile of these groups of stainless steels is still not completely known specifically at higher temperatures, and is obviously largely underestimated. duplex superduplex SSC SCC sour gas hydrogen sulfide carbon dioxide...

... and conclusion. This paper will also describe all the recommended action to improve the process to control corrosion. sour gas sour gas treating tail gas treating pH neutralization sulfur recovery unit quench water column INTRODUCTION Sulfur Recovery Unit (SRU) SRU is installed as a part of the process...

... section clearly indicate strong presence of iron sulfide which is a corrosion product resulting from the wet corrosion of steel in sour atmosphere. The source of this FeS present in the gas pipelines is also from the upstream corrosion process ¹ . Accumulation of FeS in the sour gas corrosion...

... stretches their performance and a high degree of quality control on each component within the monolithic isolation joint is necessary. Failures of monolithic isolation joints in a sour gas field have highlighted critical areas where purchaser attention is needed: Seal procurement: In multiple cases...

... and contribution to bacteria killing. combined corrosion inhibitor scale corrosion protection critical micelle concentration sour gas APB autoclave test INTRODUCTION In a gas/oil stream containing H₂S and/or CO₂, corrosion occurs and can cause the flowline or facility failure...

.... Sulfur sour gas methanol oxygen vapor recovery unit line failure The equilibrium constant is large (Log₁₀K₀ = 68.41) and the Gibbs Free Energy (= -387.98 kJ/mol) suggests the reaction will be favored. The kinetics of the reaction will vary considerably with the conditions...

... carbon manganese steels pipeline steels strain sulfides sour gas cracking hardness welded joints MAG welding INTRODUCTION The specific problems associated with the use of steels in H₂S containing environments have been extensively documented. One of these is known as sulfide stress...

... in the presence of elemental sulfur. elemental sulfur corrosion resistant alloys hydrogen sulfide sour gas brine inhibitors tensile testing corrosion testing Introduction Oil and gas are increasingly produced from deeper horizons which means under more challenging conditions, i.e. with very high pressures...

... of time corrosion is mitigated to acceptable levels should an interruption in the CI supply occur (e.g. pump failure, delayed CI delivery etc). After each simulated wet sour gas test, the working electrode was removed from the autoclave, cleaned and weighed to determine the average corrosion rate...

...Corrosion hydrates inhibitors compatible sour gas pipelines INTRODUCTION The recent significant rise in the global energy price has stimulated increased oil and gas production in many facilities around the world. In addition, there are also more intensive activities in the exploration of new...

... corrosion under elemental sulfur and finally the potential of corrosion inhibitors disperse elemental sulfur into an aqueous phase. elemental sulfur hydrogen sulfide sour gas carbon steel corrosion inhibitor under deposit sulfur dispersion corrosion inhibitor adsorption INTRODUCTION Corrosion...

... environments was tested in high pressure autoclaves. Corrosion rate analysis is conducted by weight loss, electrical impedance spectroscopy. Scale analysis is conducted by SEM/EDX and XRD Iron Sulfide Sour Gas H₂S Carbon Steel Corrosion Inhibitor INTRODUCTION The question arises however, how...