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Paramétrages

Paramétrages

1. US20170122078 - Tagged corrosion inhibitors for use in subterranean operations

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

Claims

1. A method comprising:
providing a tagged corrosion-inhibiting additive that comprises an imidazoline-based compound covalently bonded with a detectable moiety through a synthesis scheme selected from the group consisting of:
(i) a first synthesis scheme comprising:
reacting an acid comprising the detectable moiety with an alcohol in a solvent to form a cyclic intermediate that comprises the detectable moiety, and
substituting the cyclic intermediate with the imidazoline-based compound such that the imidazoline-based compound is covalently bonded with a detectable moiety; and
(ii) a second synthesis scheme comprising:
substituting a fatty acid onto the imidazoline-based compound, and
substituting the detectable moiety onto the fatty acid; and
introducing the tagged corrosion-inhibiting additive into at least a portion of a subterranean formation.
2. The method of claim 1 further comprising:
taking a sample of fluid from at least a portion of the subterranean formation; and
analyzing the sample of fluid to determine a concentration of the tagged corrosion-inhibiting additive in the fluid.
3. The method of claim 2 wherein an inductively coupled plasma optical emission spectrometry technique is used to analyze the fluid sample.
4. The method of claim 2 wherein:
the concentration of the tagged corrosion-inhibiting additive in the fluid sample is less than a predetermined effective amount; and
the method further comprises introducing an additional corrosion-inhibiting additive into at least a portion of the subterranean formation.
5. The method of claim 4 wherein the additional corrosion-inhibiting additive comprises an additional tagged corrosion-inhibiting additive.
6. The method of claim 1 wherein a well bore penetrates the portion of the subterranean formation, and at least a portion of tubing resides in the well bore.
7. The method of claim 1 wherein introducing the tagged corrosion-inhibiting additive into at least a portion of the subterranean formation comprises injecting the tagged corrosion-inhibiting additive into a capillary injection tube disposed in a well bore that penetrates at least a portion of the subterranean formation.
8. The method of claim 1 wherein introducing the tagged corrosion-inhibiting additive into at least a portion of the subterranean formation comprises:
introducing a first amount of the tagged corrosion-inhibiting additive into a well bore penetrating at least a portion of the subterranean formation at a first time; and
introducing a second amount of the tagged corrosion-inhibiting additive into the well bore at a second time.
9. The method of claim 8 wherein the method further comprises:
taking a sample of fluid from at least a portion of the subterranean formation after the first amount of the tagged corrosion-inhibiting additive was introduced;
analyzing the fluid sample to determine a concentration of the tagged corrosion-inhibiting additive in the fluid sample,
and wherein the second time was selected based at least in part on the concentration of the tagged corrosion-inhibiting additive in the fluid sample.
10. The method of claim 1 wherein the detectable moiety comprises at least one element selected from the group consisting of: boron, phosphorus, bromine, iodine, selenium, and any combination thereof.
11. A method comprising:
providing a tagged corrosion-inhibiting additive that comprises an imidazoline-based compound covalently bonded with a detectable moiety through a synthesis scheme selected from the group consisting of:
(i) a first synthesis scheme comprising:
reacting an acid comprising the detectable moiety with an alcohol in a solvent to form a cyclic intermediate that comprises the detectable moiety, and
substituting the cyclic intermediate with the imidazoline-based compound such that the imidazoline-based compound is covalently bonded with a detectable moiety; and
(ii) a second synthesis scheme comprising:
substituting a fatty acid onto the imidazoline-based compound, and
substituting the detectable moiety onto the fatty acid; and
introducing the tagged corrosion-inhibiting additive into at least a portion of a pipeline carrying one or more fluids from one location along the pipeline to another location along the pipeline.
12. The method of claim 11 further comprising:
taking a sample of fluid from at least a portion of the pipeline; and
analyzing the sample of fluid to determine a concentration of the tagged corrosion-inhibiting additive in the fluid.
13. The method of claim 12 wherein an inductively coupled plasma optical emission spectrometry technique is used to analyze the fluid sample.
14. The method of claim 12 wherein:
the concentration of the tagged corrosion-inhibiting additive in the fluid sample is less than a predetermined effective amount; and
the method further comprises introducing an additional corrosion-inhibiting additive into at least a portion of the pipeline.
15. The method of claim 14 wherein the additional corrosion-inhibiting additive comprises an additional tagged corrosion-inhibiting additive.
16. The method of claim 11 wherein introducing the tagged corrosion-inhibiting additive into at least a portion of the pipeline comprises:
introducing a first amount of the tagged corrosion-inhibiting additive into the pipeline at a first time; and
introducing a second amount of the tagged corrosion-inhibiting additive into the pipeline at a second time.
17. The method of claim 16 wherein the method further comprises:
taking a sample of fluid from at least a portion of the pipeline after the first amount of the tagged corrosion-inhibiting additive was introduced;
analyzing the fluid sample to determine a concentration of the tagged corrosion-inhibiting additive in the fluid sample,
and wherein the second time was selected based at least in part on the concentration of the tagged corrosion-inhibiting additive in the fluid sample.
18. The method of claim 11 wherein the detectable moiety comprises at least one element selected from the group consisting of: boron, phosphorus, bromine, iodine, selenium, and any combination thereof.
19. A corrosion-inhibiting composition comprising an imidazoline-based compound covalently bonded with a detectable moiety that comprises boron through a synthesis scheme selected from the group consisting of:
(i) a first synthesis scheme comprising:
reacting an acid comprising the detectable moiety with an alcohol in a solvent to form a cyclic intermediate that comprises the detectable moiety, and
substituting the cyclic intermediate with the imidazoline-based compound such that the imidazoline-based compound is covalently bonded with a detectable moiety; and
(ii) a second synthesis scheme comprising:
substituting a fatty acid onto the imidazoline-based compound, and
substituting the detectable moiety onto the fatty acid.
20. The corrosion-inhibiting composition of claim 19 wherein the imidazoline-based compound comprises an imidazoline-based amine.