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AssigneeBaker Hughes Incorporated
InventorsScott E. Lehrer, Vladimir Jovancicevic, Sunder Ramachandran
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The use of a composition including a transition metal salt and at least one water-soluble aldehyde or water-soluble aldehyde precursor scavenges H2S that is present in aqueous fluids (e.g. produced water liquid streams), natural gas and in oil and mixtures thereof (e.g. mixed production streams that contain all three phases) better than either component when used alone. The resulting scavenger combination significantly increases the reaction rate and the overall scavenging efficiency, i.e. capacity over the case where each component is used alone, in the same total amount. Non-limiting examples of the metal salt include zinc or iron carboxylates, and a non-limiting example of a water-soluble aldehyde or water-soluble aldehyde precursor is ethylene glycol hemiformal.
A method for scavenging hydrogen sulfide and/or mercaptans from a fluid selected from the group consisting of a liquid aqueous phase, a liquid hydrocarbon phase, a liquid aqueous phase together with a hydrocarbon gaseous phase, a liquid hydrocarbon phase together with a gaseous hydrocarbon phase, and mixtures thereof, the method comprising contacting the fluid with a composition for synergistically scavenging hydrogen sulfide and/or mercaptans, where the composition comprises:
A composition for scavenging hydrogen sulfide and/or mercaptans from a fluid, the composition comprising:
A fluid treated to scavenge hydrogen sulfide and/or mercaptans therefrom, comprising:
Dependencies are inferred from the claim text.