Releasing tool

摘要

A releasing tool for use in gravel packing operations comprising case means for releasably attaching the releasing tool to a tubing string, releasing block means retained within the case means for releasably attaching the releasing tool to the hook-up nipple of a gravel pack screen assembly and releasing mandrel means slidably disposed within the case means for alternately allowing the releasing block means to engage and disengage the hook-up nipple of a gravel pack screen assembly.