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Lining manufacturing process designed to meet demands of oil producers

6th February 2014


Major oil companies are looking for better solutions to reduce the high cost of corrosion caused by carbon dioxide, hydrogen dioxide and oxygen found in many downhole and injector wells. Yet, many manufacturers find it very challenging to meet the high standards set by most major oil production companies because product failure is not accepted.

DUOLINE Technologies manufacturing process enables the company to produce a high quality product that more than meets the demands of major oil producers.

First, DUOLINE Technologies designed a new manufacturing facility in Gilmer, Texas, USA, to effectively reproduce its high quality and long-lasting tubular lining.  today’s best technology.

It saddresses two typical problem areas where many other liners fail: chemical resistance and encapsulated air pockets.

To produce the highly chemical resistant DUOLINE liner the manufacturing process begins with a seamless glass reinforced filament. The liner is then wound with fibreglass rovings in a continuous helical pattern to provide the greatest tensile and hoop strength. The glass is then highly saturated during the winding process with a proprietary aromatic resin formulation providing fusion between the fibres, ensuring a holiday-free liner. This full saturation of the fibres provides the necessary chemical resistance for DUOLINE linings to survive in the field.

Encapsulated air pockets are a potential point of failure of a liner over time. Air pockets are often a result of a thermal cure cycle that cures the outer diameter first. This external heating process often entraps air pockets in the liner’s wall. The DUOLINE manufacturing process differs because it applies internal heat to a hollow mandrel. This internal liner curing process ensures air pockets will not occur on the liner’s wall, ensuring the long-term success of DUOLINE in the field for decades.

Another interesting fact about DUOLINE Technology is that the more than 40,000 bits of data delivered to processing personnel on a daily basis. This automated monitoring of production operations has allowed DUOLINE Technologies to determine what processes need to be adjusted.

For more information, visit www.duoline.com







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