H2S scavenger test methodologies used for the evaluation of scavenger products in oil and gas production can vary in design and purpose. The benefits and limitations of three different methods have been determined using established scavenger chemistries. The capacity, kinetics, and efficiency of the scavengers were evaluated by employing a variation of temperature, concentration, and, in some cases, pressure. The effect of pH was studied to determine the contribution of neutralization compared to a reaction where the sulfide is covalently bound (reversible versus non-reversible reactions). Additional observations were made on thermal stability and secondary effects, such as, solids formation from reaction products and scaling. Industry requires information on the capability of H2S scavenger methods in order to select suitable products to implement in their production systems. The intent is to provide a perspective that helps them make technically informed decisions.

Subject
Test methods, Sensors, Hydrogen concentration, Solids, Triazines, Gas pressure, Acidity, Liquids, Bubbling, Fluids, Chemistry, Towers, Chemical reactions
Keywords:
hydrogen sulfide, H2S scavengers, capacity, efficiency, kinetics, mass balance
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2021
Association for Materials Protection and Performance (AMPP)
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