Patent ID: 11885191
Assignee: nan
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 12:
13. A method of connecting a string of pipe to an end of a downhole tubular in a wellbore, the method comprising:
lowering a downhole tool into the wellbore on the end of the string of pipe, the downhole tool comprising a catch and a seal, the seal comprising a housing and a plurality of sealing elements;
overlapping a lower end of the downhole tool and an upper end of the downhole tubular and setting the catch to form a connection between the lower end of the downhole tool and the upper end of the downhole tubular where they overlap;
melting the melting metal sealing elements by heating the melting metal sealing elements;
stopping heating of the metal sealing elements after they melt to allow the melting metal to solidify to form at least a partial seal between the downhole tool and the end of the downhole tubular;
wherein the plurality of sealing elements comprises:
one or more melting metal sealing elements made of a eutectic metal alloy with a melting point lower than an annealing temperature of the tubular, and
one or more sealing elements made at least in part from of rubber, non-rubber elastomer, or non-eutectic metal or metal alloy, which are configured to act as barrier to impede migration of a flow along the casing patch of the eutectic metal or metal alloy when melted by a heater within the vicinity of the one or more melting metal sealing elements.