| CPC E21B 31/007 (2013.01) | 16 Claims |
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1. A downhole fishing tool for retrieving an object from a wellbore, the tool comprising:
a main body comprising a tubular assembly configured to be positioned in the wellbore; and
a lens configured to direct a laser beam circumferentially along a first ring of cladding wire when the first ring is in contact with the object, thereby welding the first ring to the object, and subsequently to direct the laser beam circumferentially along a second ring of cladding wire disposed above the first ring, thereby welding the second ring together with the first ring and the tubular assembly such that, when the first ring and the second ring are so welded, pulling the tool in an uphole direction pulls the object along with the fishing tool.
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