EXTERNAL CATCH FISHING TOOL

摘要

An external catch fishing tool, or an overshot (10) having a grapple control (35) that has at least one gap (65) to allow the grapple control to be more compliant and to reduce the contact force between the grapple key (32) and the grapple control during fishing operations. The grapple control may also include a bridge (60) or a plurality of bridges of reduced thickness. Alternate embodiments of the grapple control may include two or more gaps and support bands with or without bridges. Additional embodiment so the grapple control include a backup ring (40) to help eliminate misalignment of the grapple control with the support shoulder of the overshot guide.