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US 12,607,090 B1Granted
Downhole sealing mechanisms and methods of use thereof
AssigneeSchlumberger Technology Corporation
InventorsClement Laplane, Sai Aung Thu Win Tin, Hai Liu, Alexander Rudnik
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Abstract
A method and system for sealing a perforated tubular is provided. The method includes disposing a meltable alloy in a wellbore including a perforated tubular disposed therein at a desired seal location, the wellbore and the perforated tubular defining an annulus and applying a heating gradient to the meltable alloy such that the meltable alloy melts and resolidifies before the meltable alloy seals an entire cross-section of the annulus.
Claims10
A method of sealing a portion of a wellbore, comprising:
- isolating a section of a wellbore from a remainder of the wellbore using a first isolation body disposed above the section of the wellbore and a second isolation body disposed below the section of the wellbore, wherein a perforated tubular is disposed within the wellbore defining an annulus between the perforated tubular and the wellbore;
- lowering a bottom hole assembly (BHA) through a bore of the perforated tubular;
- milling a portion of the first isolation body within the bore of the perforated tubular with the BHA;
- sealing a portion of the BHA against the milled portion of the first isolation body;
- flowing a sealant from the BHA into the annulus of the isolated section of the wellbore to seal the annulus of the isolated section of the wellbore;
- and
- milling a portion of the second isolation body within the bore of the perforated tubular with the BHA.
4 more elements
Dependencies are inferred from the claim text.