CPC E21B 23/02 (2013.01) [E21B 23/06 (2013.01); E21B 33/127 (2013.01)] | 20 Claims |
1. A wellbore system, comprising:
a tubular string including a at least one landing nipple therein, the at least one landing nipple defining a sealing surface with an internal passageway extending therethrough;
a locking mandrel including an elongated body defining an outer surface, the locking mandrel including a lock for securing the elongated body within the internal passageway extending through a landing;
a sealing mechanism carried by the locking mandrel and including a sealing element constructed of an expandable metal, the expandable metal reactive to form metal hydroxides in the presence of a water-based fluid; and
a radial separation between the sealing element constructed of the expandable metal and the at least one landing nipple before the chemical reaction with the water-based fluid.
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