User Manual
Turnaround Sheave
108-3108-HV0
108-3108-HV1
OPS-3108 Rev E
9
3 Technical Description
The Phuel Turnaround Sheave provides the maximum tool string height in the
riser, while preserving the life of the wire by extending the wheel diameter to
20inches – making it suitable for the larger wire diameters. Magnets have
been incorporated into the wheel so that the Phuel Detection system can be
used to confirm that the wheel is turning – providing extra assurance during
operations.
The wheel is supported on two ball bearings mounted inside a housing and
secured with a Seal Ring at one end, which is locked in place by a series of
inner and outer plates. The plates are equally spaced around the
circumference of the seal ring and secured with screws to prevent movement.
The Housing provides three lifting eyes so that the balance of the riser weight
can be accommodated while lifting. The outermost eyes are positioned so as
to provide an almost perfect balance point when the lubricators are attached
to make the handling and stabbing in process easier.
An alternative Bottom Sub can be provided to allow the Phuel IRIS tool
catcher to be directly incorporated without wasting more riser height and the
other adapter allows the Grease head to be directly connected without the
need for any disassembly of its lower section.
At the top end there is a ½” NPT connection to facilitate the bleed off of gas if
it breaks out from the wire during operations. The lower grease injection ports
(½” NPT) are used to prevent the well debris from entering the bearings
during operations. A grease pump must be connected and set up so that
grease is constantly being pumped through at a rate of 1 – 2 strokes per
minute during operations irrespective of the operating pressures to maximise
the life of the bearings.
The NPT connects are cut into the Phuel saver Sub, which is a removable
part that can be easily replaced if damaged without the need to repair the
main housing. This port is a standard interface to many alternative Phuel parts
so blank ports, check valves, valve manifolds or isolating valves can be
attached here to suit the required operation. Contact Phuel for more details if
required.