US Patent 9976407 Logging tool and method of use

A logging tool or logging tool sub (10) for downhole use comprises an elongate cylindrical body (11) having supported thereby one or more movable landing extensions (12) that are movable between an extended position in which part of each said movable landing extension protrudes beyond the exterior of the cylindrical body (11) so as to define one or more exposed landing surfaces that are engageable with one or more landing surfaces (21) of a further component; and a retracted position in which each said movable landing extension (12) protrudes externally of the cylindrical body no further than the exterior thereof (11).