AGE Riserless Pump Systems

The Riserless system is ideally suited to large, deep wells and offers even more advantages in new wells

where the production casing and drilled hole diameter can often be reduced without affecting well production rates.

For ease of installation, all components are lowered into the well using small diameter dual sealed AGE handing pipe. The packer inflation tubes, motor cables and vent lines are secured to the hanging pipe at regular intervals.

With the assembly at the required depth, the packer is inflated to support the pump and seal the casing. When the inflation tube and motor cables have been sealed, the well is ready for pumping.

Why use a Riserless System?
The Riserless pump system presents an attractive alternative to traditional submersible pump completion, offering several advantages:
• Since the well casing acts as the riser, no separate riser is required.
• All installation/retrieval operations can be performed using a simple winch or crane arrangement, rather than mobilising a drill rig.
• For new installations, smaller diameter holes may be used, since the hole size no longer depends on riser clearances.
• The down hole equipment can be very quickly and simply moved to another depth, or removed entirely for servicing, re-location etc.
• Since the casing above the pump is sealed, it remains water-filled regardless of pump drawdown, eliminating corrosion which may result from changing water levels.
• The inflatable packer can be made to accommodate a through tube which allows static head levels to be monitored at the pump inlet, avoiding potential negative head problems due to excessive drawdown.
• The larger diameter riser leads to lower frictional head loss in pumping the well, lowering power consumption.