#MechanicalCombinationToolstring is normally used where #toolstring length/height is a limitation.

A typical application would be #runningplugs and #pulling_plugs from the #tubing_hanger in #conventional_wellhead or #subsea_wellheads where it is always desirable to close the upper swab valve in the event that the #wireline is pulled from the #rope_socket or the #toolstring gets stuck.

The #Mechanical_Combination_Toolstring incorporates a #MechanicalSpringJar, #accelerator, #weight_bar and optional #IntegralRopeSocket in a compact design.