PARVEEN Releasable Overshots are used retrieve a fish lost in the well that does not have a conventional fishing neck or a damaged fishing neck on it. The tool is operated by applying the weight of the tool string on to the fish. This will allow the slips to expand around the fish when the tool string is picked up, the slip will engage the fish. Many overshots cannot be released once they are latched. However the slips of the PARVEEN releasable overshots can be released by downward jarring. 
