CPC E21B 43/105 (2013.01) [E21B 33/1208 (2013.01); E21B 29/10 (2013.01); E21B 33/1285 (2013.01); E21B 36/008 (2013.01)] | 18 Claims |
1. A method of sealing a wall of a bore, the method comprising:
providing a patch member comprising a sprung coil of layers of sheet material with a sealing material comprising a low melt point alloy on an exterior surface thereof;
running the patch member into a bore in a smaller diameter first configuration;
heating the sealing material to render the sealing material flowable;
reconfiguring the patch member by at least partially unwinding the coil to a larger diameter second configuration; and
hardening the sealing material to provide a seal between the exterior surface of the patch member and an inner surface of the bore.
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