OTC 2018: PVDF polymer strengthens risers, flowlines

Offshore staff

HOUSTON – Solvay has introduced Solef 90615/2002 polyvinlylidene fluoride (PVDF), a new polymer designed to improve the capabilities of steel pipes, flexible risers and flowlines.

It is said to offer high ductility, thermal stability up to 150°C (302°F), and strong resistance to oilfield chemicals and fluids.

“These attributes can help extend the lifespan of oil and gas assets and lower operating costs over the lifetime of the pipe,” said Mike O’Brien, oil and gas market manager for the company’s Specialty Polymers business unit.

Liners made from Solef 90615/2002 PVDF can be easily inserted into steel pipes, the company claims, due to the material’s ductility and elasticity.

Once inserted, the liner’s chemical resistance helps slow corrosion, and its low-stick, smooth surface is said to support more consistent flow rates and flow assurance over time.

The new PVDF grade is also said to limit the need for corrosion inhibitors, anti-bacterial agents and other additives, while its thermo-mechanical properties and resistance to permeation of gases, such as methane and hydrogen sulfide, are said to promote long-term liner integrity.

The material can also resist blistering in rapid gas decompression up to 1,500 bar (21,756 psi).

Solvay is exhibiting at booth #7310.

05/02/2018