A RISER buoyancy system developed by Melbourne-based AMOG Consulting will be produced and marketed by Matrix

Composites & Engineering after signing an exclusive worldwide licencing agreement.

AMOG’s longitudinally grooved suppression system (LGS) will be produced by Matrix for what it said was a major US drilling contractor operating in the Gulf of Mexico.

In its announcement, Matrix said the contractor would remove the existing buoyancy dressed on the riser and replace it with the LGS buoyancy, with the system then being run in the same way as a conventionally dressed riser.

AMOG has said its LGS system addresses vortex-induced vibrations (VIV) – a phenomenon which imposes amplified hydrodynamic drag loading and excessive bending on drill strings during high current events and in field rig moves.

“These factors too often require operations to be suspended or delayed, with downtime costing operators significant sums of money,” AMOG said.

Reducing the drag and VIV on tubular structures meant that floating drill rigs and platforms could continue operations under high ocean current conditions – which AMOG said could deliver an increase of 20% in uptime during eddy current events.

“In a time where there is pressure on cost reduction in all elements of the offshore oil and gas industry, LGS is an enabling technology to achieve significant operational cost savings in the drilling sector,” AMOG said.

Matrix had earlier assessed and tested the LGS through Oceanic Consulting Corporation, conducting the tests at Canada’s National Resource Council’s test facility in St Johns, Newfoundland.

“The outcome of these tests exceeded predicted results from the small scale tests, with testing demonstrating that the unique profile of LGS reduces total drag and VIV, substantially surpassing the performance of current state of the art technologies,” Matrix said in an announcement.

“These attributes open up applications for LGS in a broad variety of offshore applications including both drilling and production riser applications.”

Matrix chief executive Aaron Begley said he was delighted Matrix had signed the licencing agreement for the products, saying the testing had revealed LGS would mean floating drilling rigs would be able to continue operating safely in high current conditions.

“In the current oil price environment, this agreement comes at the perfect time given the cost savings and increased production LGS can deliver, which we believe will be highly attractive to producers,” he said.