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US 11,078,403 B2Granted
Synergistic sulfide scavenging additives for use in oilfield operations
AssigneeHalliburton Energy Services, Inc.
InventorsLiu Shi, Funian Zhao, Liangwei Qu, Edward Corrin
Life of this patent
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Abstract
Systems, compositions, and methods for synergistic additives for use in the scavenging of sulfur-containing compounds encountered in oilfield operations are provided. In one embodiment, the methods comprise injecting a sulfide scavenging additive that does not comprise a significant amount of an aldehyde into at least a portion of a subterranean formation where one or more sulfur-containing species are present; and injecting a synergistic additive comprising at least one base into at least the portion of the subterranean formation.
Claims20
A method comprising:
- injecting a sulfide scavenging additive that is substantially free of aldehyde, the additive comprising at least one compound selected from the group consisting of an acrylate-based compound, an acrylonitrile-based compound, and any combination thereof into at least a portion of a subterranean formation where one or more sulfur-containing species are present;
- and
- injecting a synergistic additive comprising at least one weak base into at least the portion of the subterranean formation;
- wherein at least one of the sulfide scavenging additive or the synergistic additive is injected as a liquid or a mist.
1 more element
A method comprising:
- injecting a sulfide scavenging additive that is substantially free of aldehyde, the additive comprising at least one compound selected from the group consisting of an acrylate-based compound, an acrylonitrile-based compound, and any combination thereof into at least a portion of a subterranean formation where one or more sulfur-containing species are present, and
- injecting a synergistic additive comprising at least one base into at least the portion of the subterranean formation;
- wherein at least one of the sulfide scavenging additive or the synergistic additive is injected as a liquid or a mist.
Dependencies are inferred from the claim text.