Collet Lock Assembly and Method for Downhole Load Diversion

摘要

A collet lock assembly for use on a downhole tool allows repeat cycling of a “RELEASE” and “SET” position. In the “RELEASE” position, the collet lock assembly allows bi-directional relative movement of the mandrel in relation to the collet lock assembly, while in the “SET” position, the assembly allows bi-directional load transfer along the mandrel directly into the slip assembly while diverting axial loads away from components positioned along the downhole tool.

主权项

1. A downhole assembly to divert axial loading away from a component of the downhole assembly, the assembly comprising:
a mandrel; a slip assembly positioned along the mandrel; a collet lock assembly positioned along the mandrel, the collet lock assembly comprising:
a plurality of collet fingers extending therefrom, the collet fingers comprising a first angular surface on an outer surface of the collet fingers;an assembly housing positioned along the mandrel at an end of the collet lock assembly opposite the collet, the assembly housing comprising a second angular surface on an inner surface of the assembly housing; anda loading device positioned along the collet lock assembly; andan assembly component positioned along the mandrel,wherein the loading device is adapted to release the assembly housing after the slip assembly has been set, thus allowing the second angular surface of the assembly housing to slidingly mate with the first angular surface to force the collet fingers to grip the mandrel in order to provide bi-directional axial load transfer to the slip assembly.