User Manual
Tool Catcher
OPS-4428 Rev A
8
4 Operation
All operations to be carried out by suitably qualified and competent personnel
4.1 Setting Up
Position the tool catcher at the top of the riser stack immediately below
the stuffing box, grease head or Turnaround Sheave (see note below)
Remove protector to allow fitment of ½” NPT connector
Attach a hydraulic hose to the ½” NPT port using a suitable adapter –
secure the hose to the riser to prevent trapping when lifting
Refit
protector
Apply pressure to the tool catcher to open the fingers. If possible look
in the bore to confirm that the fingers are opening. Bleed off and
confirm that they are closing again fully.
Make up the rest of the riser stack as normal
4.2 Inserting the Tool String
Apply pressure to the port to open the fingers and insert the tool string
– remember it will not be possible to withdraw the tool string again as
the upper fingers will catch in the recesses between the tool sections*.
When the rope socket (or cable head) is reached, push it beyond the
lower finger set and then bleed off the hydraulic pressure to release the
fingers. Pull the string back against the upper finger set to lock the rope
socket in the catcher.
*Alternatively the string can be inserted from below the catcher by
feeding only the cable head through the catcher then making up the
string to the cable head and then pulling back into the catcher. Either
method is acceptable
4.3 Operating (Catching)
The Catcher is automatically set at ready to catch if no pressure is
applied to the hydraulic port and there is no fishing neck in the Catcher.
Pull the tool string upwards until the rope socket tags against the top
set of fingers and the slack off the weight and the fingers will now
support the tool string
4.4 Operating (Releasing)
Take the weight of the tool string and lift up until the rope socket tags
the upper set of fingers