Patent attributes
According to some embodiments, systems and methods of releasing a wireline from a tool string in a well are presented. For example, a wireline release tool may include a first housing portion and a second housing portion. The first housing portion may have a closed end, an open end, and a chamber therebetween, and the second housing portion may be shearably attached to close the open end of the first housing portion. A gas generator may be disposed in the chamber and may be capable of generating gas pressure in the chamber sufficient to overcome a pressure differential between the chamber and the external wellbore environment and to force the second housing portion from an initial position to a release position. One of the housing portions may be configured for attachment to a wireline, while the other of the housing portions may be configured for attachment to a tool string.
