Mechanical Release Running Tool is a conventional rotational release running tool, with no rotational drive capability. This tool simply carry the liner assembly to the target depth and then released with right-hand rotation after the hanger has been set. Designed to release in compression. This tool can be run in vertical, inclined or horizontal wells with a high degree of confidence. As a service tool, the Mechanical Release Running Tool is a heavy duty design and ensures a long, usable service life. This tool is provided with standard API Top Box and Bottom Box for direct connection to heavy weight drill pipe and retrievable seal joint, solid bushing or inverted cup tool. It may be run in combination with various setting tools to run liner top packers or tieback seal nipple packers.