drill collar slips

drill collar slips

 Drill collar slips are suitable for clamping diameter 4¹/₂in(114.3mm) to 9¹/₂In (241.3mm) drill collars. The products shall be designed and manufactured according to the requirements of API Spec 7K.

Slips hold the string weight in place, acting as a wedge. The slips and inserts are easily changed. To set slips, position the string above the rotary and let it stop completely. Put the slips into the bowl and gradually shift the string weight from the elevator to the
slips.
If the pipe is quickly dropped into the slips, the slips will be overloaded and damaged. The slips can also be damaged by side to side pipe movement.

The load causes the slips to set and wedge into the bowl, gripping the pipe. To remove slips, hold up the slip handles as the pipe is raised, letting the slips stay on the raised pipe. When slips are above the bowl, push the handles down or pull rear handle, removing slips