High-load big bore lock

Details High-load big bore lock High-load big bore lock

E - Fixed Constructions

21

B

E21B 23/02 (2006.01) E21B 23/14 (2006.01)

Patent

CA 2356506

A high load wireline lock features a plurality of dogs supported by a fishing neck. Radial loads, transmitted through the dogs when the lock is engaged, are in turn directed into the fishing neck in the manner so as to distribute the load into the wall of the fishing neck. The contact between the dogs and the fishing neck is along sloping surface which minimize the radial forces against the fishing neck and in turn applies forces in a near tangential direction through the wall of the fishing neck thus greatly increasing the load capacity of the wireline lock.

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