Downhole taggant injector apparatus and system
AssigneeExpro North Sea Limited
InventorJulian Richard Trinder
Life of this patent
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Abstract
A downhole injector apparatus for injecting a taggant into a wellbore includes an injector nozzle outlet and a taggant reservoir in fluid communication with the injector nozzle outlet and configured to hold the taggant to be injected. The apparatus further includes a pressure wave generator configured to apply a pressure wave within the reservoir to expel the taggant from the reservoir through the injector nozzle outlet.
Claims19
A downhole injector apparatus for injecting a taggant into a wellbore, comprising:
- an injector nozzle outlet;
- a taggant reservoir in fluid communication with the injector nozzle outlet and configured to hold the taggant to be injected;
- and a pressure wave generator configured to produce a pressure wave configured to propagate through the taggant within the reservoir to expel the taggant from the reservoir through the injector nozzle outlet, wherein the taggant is retained within the reservoir by a surface tension effect of the taggant across the injector nozzle outlet, and the pressure wave generator is configured to generate a pressure wave of sufficient magnitude to overcome the surface tension of the taggant across the injector nozzle outlet.
A method for injecting a taggant into a wellbore, comprising generating a pressure wave configured to propagate within taggant disposed within a reservoir, wherein the reservoir of taggant is located in the wellbore, and wherein the pressure wave is further configured to cause taggant to be expelled from the reservoir through an injector nozzle outlet, wherein the taggant is retained within the reservoir by a surface tension effect of the taggant across the injector nozzle outlet, and the pressure wave generated is of sufficient magnitude to overcome the surface tension of the taggant across the injector nozzle outlet.
Dependencies are inferred from the claim text.