Method of scavenging hydrogen sulfide and/or sulfhydryl compounds
AssigneeLonza Ltd.
InventorKevin Edward Janak
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Abstract
A method of reducing the amount of sulfhydryl compounds from sour hydrocarbon fluids is described. In the method, an aldehyde-releasing compound, which is high temperature stable and is highly water-soluble, is introduced to a hydrocarbon fluid stream as a scavenger for sulfhydryl compounds. The aldehyde-releasing compound is allowed to mix with the hydrocarbon fluid stream and the aldehyde-releasing compound is allowed to react with the sulfhydryl compounds present in the hydrocarbon fluid stream, thereby reducing the presence sulfhydryl compound in the hydrocarbon fluid stream.
Claims10
A method for reducing the amount of sulfhydryl compounds from an oil and gas production well or injection well, said method comprising
- (i) providing a high temperature stable, highly water soluble aldehyde-releasing compound comprising hydantoins;
- and
- (ii) adding an effective amount of the aldehyde-releasing compound to the production well or the injection well at a position downhole and below ground surface, the aldehyde-releasing compound being added to a hydrocarbon fluid stream downhole and below ground during production of oil or gas from the production well or injection well.
Dependencies are inferred from the claim text.