High-pressure wellhead-sealing environments, such as casing strings and tubing hangers, are safety-critical applications requiring a robust and capable sealing product. Trelleborg Sealing Solutions introduced a metal end cap seal specifically engineered for high-pressure/high-temperature (HP/HT) wellheads, tubing, and casing-hanger-sealing environments that combines the pressure and extrusion resistance of a metal-to-metal bonded component with the flexibility of an elastomer. The high-performance elastomer-to-metal bonded sealing elements provide the high level of extrusion resistance necessary for HP/HT casing and tubing hanger applications. Combining the range of proprietary XploR rapid-gas-decompression and sour-gas-resistant elastomers with corrosion-resistant metal end caps, the company’s engineers can design a customized sealing solution to meet specific oilfield requirements. Sealing in the elastomer-to-metal design solution is achieved by controlled deformation of the elastomer and metal end cap elements during installation and operation. Optimal stress distribution throughout the elastomer body is modeled through finite-element analysis to ensure that appropriate design standards are applied to each customer’s application. Extrusion resistance is provided by the specially designed metal end caps that provide positive metal-to-metal sealing interference with the hardware upon assembly and conform to any potential extrusion gaps under pressure.
For more information, visit www.oilandgas-seals.com/en.
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