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US 11,634,622 B2Granted
Compositions and methods for scavenging H2S
AssigneeRhodia Poliamida E Especialidades S.A.
InventorsEder Rissi Torres, Edson Leme Rodrigues, Victor Ferrão
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Abstract
A method of treating a fluid, which method includes the steps of: (a) contacting a fluid containing at least one sulfide with a sulfide-reducing amount of a composition comprising an lignocellulosic liquor comprising one or more lignin-derived compounds and one or more hemicellulose sugar monomers and/or oligomers and (b) allowing the lignocellulosic liquor to react with at least a portion of the sulfide in the fluid.
Claims17
A method of treating a fluid comprising the steps of:
- (a) contacting a fluid containing at least one sulfide, wherein said sulfide comprises hydrogen sulfide and/or hydrogen sulfide ion, with a sulfide-reducing amount of a composition comprising lignocellulosic liquor comprising one or more lignin-derived compounds and one or more hemicellulosic sugar monomers and/or oligomers, wherein the one or more lignin derived compound comprises heterogeneous oligomers and/or monomers comprising at least one of p-coumaryl alcohol, coniferyl alcohol, and sinapyl alcohol and the one or more lignin derived compounds are present in an amount of 0.5 to 50% by weight based on total weight of the composition;
- and
- (b) allowing the lignocellulosic liquor to react with at least a portion of the sulfide in the fluid, wherein the pH of the composition ranges from 1 to 7.
A method of treating a fluid comprising the steps of:
- (a) introducing a composition comprising a lignocellulosic liquor comprising one or more lignin-derived compounds and one or more hemicellulose sugar monomers and/or oligomers into at least a portion of a subterranean formation, wherein the one or more lignin derived compound comprises heterogeneous oligomers and/or monomers comprising at least one of p-coumaryl alcohol, coniferyl alcohol, and sinapyl alcohol and the one or more lignin derived compounds are present in an amount of 0.5 to 50% by weight based on total weight of the composition;
- and (b) allowing the lignocellulosic liquor to react with at least a portion of sulfide compounds in the fluid, wherein said sulfide compounds comprise hydrogen sulfide and/or hydrogen sulfide ion, wherein the pH of the composition ranges from 1 to 7.
A method of drilling comprising:
- (a) using a drilling fluid comprising a lignocellulosic liquor comprising one or more lignin-derived compounds and one or more hemicellulose sugar monomers and/or oligomers to drill at least a portion of a well bore penetrating at least a portion of a subterranean formation, wherein the one or more lignin derived compound comprises heterogeneous oligomers and/or monomers comprising at least one of p-coumaryl alcohol, coniferyl alcohol, and sinapyl alcohol and the one or more lignin derived compounds are present in an amount of 0.5 to 50% by weight based on total weight of the composition;
- and (b) allowing the lignocellulosic liquor to react with at least a portion of sulfide compounds in the drilling fluid, wherein said sulfide compounds comprise hydrogen sulfide and/or hydrogen sulfide ion, wherein the pH of the composition ranges from 1 to 7.
Dependencies are inferred from the claim text.