Systems and method for sealing pipelines using a gel pig
AssigneeCurapipe System Ltd.
InventorsSamuel Perstnev, Boris Natapov, Alexander Perstnev, Reonald Ukhanov, Peter Paz
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Abstract
The present invention provides systems and methods for curing a leakage in a pipeline, the system including at least one gel pig and at least one sealant composition; wherein the at least one gel pig and the at least one sealant composition form a pig train, adapted to move along the pipeline to a region of the leakage and to seal the leakage.
Claims23
A system for curing at one leakage site in a pipeline, the system comprising:
- a) at least one gel pig comprising
- i. a cellulosic polysaccharide;
- ii. a surfactant;
- and
- iii. water;
- and
- b) at least one sealant composition comprising:
- iv. at least one filler;
- v. at least one gelling agent;
- and
- vi. at least one aqueous agent;
- wherein said at least one gel pig and said at least one sealant composition form a pig train, adapted to move along said pipeline to a region of said at least one leakage and to seal said at least one leakage.
(canceled)
-19. (canceled)
A system according to claim 17, wherein said pig train is adapted to prevent a bypass of a propelling product by of more than 30%.
A system according to claim 19, wherein said system further comprises a counter pressurized fluid for counter-pressurizing said pig train from a second end thereof.
28-39. (canceled)
Dependencies are inferred from the claim text.