... on the samples, but no significant change was observed in the FeCO₃. However, there was a significant change in the open circuit potential (OCP) immediately following the addition of H₂S to the system. Corrosion mechanisms Corrosion rate Hydrogen sulfide Oil and gas Carbon dioxide...

... corrosive attack (“challenge”). The study also investigated the possible connections between fractions corrosivity, and the hydrogen sulfide generated during their experimental evaluation. The refinery distillates selected for this evaluation were obtained from the same oil and were collected from the same...

...^-) from H₂S displaces the chelating ligands of Chelant (A) from the iron(II) center via a stepwise addition-elimination mechanism. This reaction produces iron sulfide (FeS) and the protonated chelant, as shown in the equation below: Abstract Hydrogen sulfide (H₂S) is a highly toxic...

... tendency for highly spent MEA and MMA triazine solutions. The test results confirmed that aging temperature could play a role in the severity of solids formation. Depending on the type of triazine, the addition of specific alternate amines significantly reduced solids formation tendency. Hydrogen sulfide...

... header suffered from severe internal corrosion. Upon analyzing the scale and sludge that was found accumulated in the line, a significant proportion of elemental sulfur was identified. This indicated that in addition to hydrogen sulfide and water (which were expected to be present in the line...

... morphology. The effects of the corrosion product layers, predominantly iron sulfides, on general and localized corrosion behavior are discussed on the background of existing literature. Sour corrosion iron sulfide carbon dioxide hydrogen sulfide INTRODUCTION Many oil and gas fields, especially in North...

... in a pipeline with a staggering corrosion rate of over 2,800 mpy resulting in a pipeline failure in less than five weeks of operations. Pitting hydrogen sulfide iron sulfide shale gas corrosion mechanism corrosion inhibitors pigging elemental sulfur INTRODUCTION In 2021, a shale sour gas producer...

... demonstrated the controls of redox potential and salinity on bacterial nitrate reduction, to aid in interpretation of the field data. The pilot was effective in preventing biogenic sulfidogenesis and has been adopted as a long-term mitigation strategy in PW storage ponds. Hydrogen Sulfide Nitrate Produced...

... concentration, temperature, and duration. Theories of solid-state chemistry and general chemical science are discussed considering the experimental data in order to create a mechanistic model which can simulate trends in corrosion rates. corrosion mechanism high temperature oxidation hydrogen sulfide sulfur...

... Hydrogen Sulfide Oil and gas Carbon dioxide INTRODUCTION A 2002 study estimated the annual cost associated with corrosion of gas pipelines to be around $5 billion. ¹ Corrosion of oil and gas pipelines continues to pose a major issue in the oil and gas industry due to the combination of brine...

... ppm). For higher contaminations (e.g. H₂S around 100 ppm and chloride content around 1000 ppm) the duplex grade UNS S32205 should be preferred. Whatever the tested condition and alloy, post-weld pickling shall never be avoided. Stainless steel Lean Duplex Corrosion Chlorides Hydrogen...

...., H₂S concentration, scavenger concentration, water cut, type of hydrocarbon) on both the H₂S scavenging capacity and kinetics of several chemical products at conditions simulating a specific field application. Chemical Treatment Hydrogen Sulfide H₂S Scavenger Laboratory Methods...

... treatment. Equivalence to wrought API 6ACRA 718 120K was achieved in mechanical properties and corrosion performance in sulfide stress cracking (SSC) and hydrogen induced stress cracking (HISC) tests. UNS N07718 Additive Manufacturing Laser Powder Bed Fusion Slow Strain Rate Test Hydrogen Sulfide...

...-perfect prediction tools, and instead employing optimization protocols, which are recently adopted approaches to rationalize design conditions to allow effective CI qualification under high CO₂/high H₂S conditions. hydrogen sulfide sour corrosion carbon dioxide sweet corrosion...

... reactions. In addition, a mathematical model was developed to predict the cathodic current of iron sulfides, and then the results were compared with the experimental data. Galvanic corrosion Pitting Hydrogen sulfide Electrochemistry Corrosion products For pyrrhotite, the Tafel region of the hydrogen...

... processes. These issues lead to high overall treatment cost and unsatisfactory performance. This paper describes recent development and successful field implementations of two new hydrogen sulfide scavenger products that provide improved optimal treatment cost and performance. These new products...

... mitigation measures and evaluated the need for continuous corrosion inhibitor injection. An enhanced corrosion mitigation plan was recommended to manage the corrosion risks during off-spec conditions. Hydrogen sulfide corrosion management pipeline internal corrosion dehydrated gas ILI INTRODUCTION...

... the practical (engineering) implication of the distribution results and compare the output to more traditional sensitivity approaches. Corrosion Management Corrosion Prediction Carbon Dioxide Hydrogen Sulfide Simulation & Modelling Uncertainty Analysis INTRODUCTION Corrosion Modelling - Background...

.... The autoclave testing consisted of three phases: a) aqueous phase -1% sodium chloride b). hydrocarbon phase -toluene/kerosene c) gas phase - mixture of 90% methane, 5% hydrogen sulfide and 5% carbon dioxide. The coatings are applied in two coats to a total dry film thickness of 12-17 mils on both sides...

...Chemical treatment Corrosion inhibitors Hydrogen sulfide INTRODUCTION The decomposition process of ancient marine species in the seabed for millions of years coupled with the presence of specific geological conditions such as high pressures and temperatures led to the formation of what is known...