Flow Restrictor Installation; Bha Makeup; Surface Testing - Not Advised - Extreme Networks PowerDrive Orbit Quick Operation Manual

PowerDrive Orbit & X6

2.2 Flow Restrictor Installation

Assembly of the Flow Restrictor is
dependent on the size of the body.
The 475 uses a threaded lock-nut to
hold the nozzle. This set is then
inserted through the base of the
housing and tightened. The 675 uses
a threaded nozzle that is inserted
through the base of the housing. The
900 requires the nozzle to be fitted to
the top of the body and a lock-nut is
then torqued down to secure it. All
connections on
assemblies should be hand-tight.
Over-tightening can lead to cracks
and washout of the restrictor, housing,
or Bias Unit.
The Flow Restrictor sits in the base of
the bias/steering unit and is held in
place by a set of O-rings and secured
by the Bit Pin. It should be inserted
just prior to making up the bit and
removed immediately on breaking off
the bit post run to prevent the potential
of loss into the open hole.
Flow Restrictor Assembly / Installation Steps:
1. Ensure that the nozzle O-ring has been fitted inside the restrictor body. Not applicable for 900.
2. All nozzles must be fitted in the correct orientation as shown in the assembly schematics above.
3. The nozzle retainers should only be hand-tight. Overtightening will lead to cracking and washout.
4. Ensure that the two O-rings on the OD of the body are in place and undamaged.
5. Insert the restrictor assembly into the "Bit Box" of the PowerDrive Bias Unit. If necessary, the slide
hammer can be used to gently tap the restrictor into place. Do not use excessive force with the slide
hammer or it may be damaged, preventing it's use for housing removal at the end of the run.
6.
Install and torque the bit.

2.3 BHA Makeup

Torqueing the Bit:
•
Tongs should be placed ABOVE the PD pads/kickers when torqueing the bit.
•
Never place tongs on the pads or kickers of the bias unit.
Torqueing the Collar:
•
Do not place tongs, slips, or collar clamps on any recesses in the PowerDrive control collar including
anchor bolt holes.
•
In general, tongs should be placed at least 12" from a box, and 6" from a pin connection.
2.4 Surface Testing – Not Advised
It is not recommended to surface test PowerDrive under normal circumstances. The surface test often
gives inconclusive results due to magnetic interference from the rig or improper testing procedure. Emag
communications can also be intermittent or completely lacking due to interference. The surface test can
also cause drilling fluid to overrun the stack and create an environmental issue for some clients. The
only time a surface test might be performed is in the event of re-running a tool. This will be covered in
Section 3.8.
Extreme Equipment Rentals
the restrictor
Restrictor
Quick Operations Guide - rev1.4
475
675
Restrictor
◼ Green = Nozzle
◼ Orange = Jam Nut
◼ Grey = Housing
◼ Black = O-Rings
900
Restrictor
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