in removal of the setting tool s this is because the collets 78 are no longer supported by tapered surface 76 allowing the collets 78 to flex radially inwardly to disengage the threaded connection 42 alternatively the setting tool s can be disengaged from the packer p by rotation which will release the connection at thread 42 however in deviated wellbores it may be difficult to disengage by rotation and the rotational means of disengagement is intended to be used as a back up if the components do not properly move to fully remove the support for collets 78 once the setting tool s is disengaged from the packer p the perforating gun g can be set at the desired location without another trip into the hole and fired fig2 is an illustration of the setting tool s shown separately from the packer p noted in dashed line 100 on fig2 is the manner in which the tensile member 84 breaks after being subjected to the predetermined force fig3 is in all ways identical to the embodiment shown in fig1 however the actuating mechanism to move the outer sleeve 26 39 is a little bit different in fig3 an initial rupture disk 102 communicates into cavity 104 which is directly above the initial piston 44 39 in this embodiment the initial piston 44 39 is connected to the secondary piston 56 39 by a.