PROGRESSING CAVITY PUMP SYSTEMS - National Oilwell Varco

PROGRESSING CAVITY PUMP SYSTEMS
Two Run Insertable PC Pump
NOV Monoflo has an innovative, new insertable progressing cavity pump design that allows the
customer to insert a pc pump inside the production tubing and pressure test the tubing string with
one easy to use tool.
Features and Benefits
• There is no need for a service rig to
pull the production tubing to change a
downhole pump
• Pump changes can be done with a flushby
equipped for rod handling
• The unit minimizes the need to remove
production tubing, reducing the cost of
downhole gauge installations
• Allows for pressure testing the
production tubing as well as the primary
seal, while inserting the stator.
• The system has the ability to use any
progressing cavity pump without
performing any modifications.
• The system can pull the rotor out of the
well bore without unseating the primary
seal.
Mechanically Bonded Stator
Well temperatures can increase due to natural conditions and the use of
thermal stimulation techniques. These conditions challenge the viability of
the traditional chemically bonded pc pump stator.
One way to address this challenge is through new methods of anchoring the
elastomers into the stator tube. NOV Monoflo has developed elastomeric
stator technology to meet demands of high temperature wells.
The mechanically bonded stator is comprised of 3 main components (not
including the elastomer):
• Stator Tube
• Mechanical Bond Inserts
• End Caps
Available in two elastomer grades:
• OBX suitable for temperatures up to 110° C
• OC suitable for temperatures up to 150° C
Available sizes:
D32-900 (1 raw) D96-1040 (2 raw) D54-1800 (3 raw)
D44-900 (1 raw) D150-300 (1 raw) D64-1560 (3 raw)
D54-1200 (2 raw) D32-1800 (2 raw) D96-1560 (3 raw)
D64-1040 (2 raw) D44-1800 (2 raw) D150-600 (2 raw)
Rotor
Operating
Position
Insert Tool
Seating Nipple
Insert
Position
Stator
Tag-Bar
Torque Anchor
Seating Mandrel
with Primary Seal