How will I know the drift is good?
A small flow restriction will occur
when the drift seats in the catcher this will be seen
at surface on the gauges confirming a good drift. The
Drift Catcher is supplied with a pressure table you will
also find the data on our pdf
leaflet.
What
do I do when pulling out of hole?
Confident that the drift is in the sub, you don't need
to spend time searching, simply pool out of hole and then
remove the drift from the tool ready for re-use.
How
will I know the drift is not good?
In the unlikely event no pressure spike is observed then
you know the flow is bypassing the drift on obstruction
What
should I do for obstructions?
When an obstruction is detected you will probably chose
to drift manually, in which case perform a risk assessment
before you start. Once the obstruction has been located
and removed you can remove the drift and pump it down
the rest of the drill pipe.
Can
I drift in open hole?
Yes you can, but request a larger choke in your drift
(at least 1") and pump the drift down at a higher
flow rate to ensure landing observation pressure is significant.
Avoid using the volumetric
drift in open hole as it is not designed to withstand
prolonged high flow rates?
Can
I fish through the tool?
Yes the fishing ID of the sub is normally only 0.08"
less than the required drift, but the exact ID will be
specified on your order. This also allows great access
for other devices such as activating balls to pass through
the sub, for example the 4.5" IF NC50 sub for a 2.5"
drift offers 2.42" of fishing ID (see table above).
Can
I fish the drift if I need to?
Yes the standard drift has a 2.5" GS internal fish-neck,
and the volumetric wiper has an external fish-neck for
easy retrieval if necessary.
