Pre-salt oil deposits are most commonly found in offshore Angola and Brazil. In Brazil, significant challenges include drilling in ~3000m of water and through up to 7000m of rock as well as an aggressive chemical environment which contains high levels of carbon dioxide (CO2) and varying levels of hydrogen sulphide (H2S). In addition, the local pressures are high enough to ensure that the CO2 is a supercritical fluid. Producing oil from such a depth and offshore requires significant use of non-bonded flexible pipes, reducing weight and providing additional design flexibility.
CO2 and H2S pose a significant corrosion risk to steel structures and in its supercritical form, CO2 specifically can be very damaging to polymers and polymer composites. Consequently, the challenges of corrosion of steel and the loss of mechanical properties in polymers may significantly reduce lifetime expectations in service. Thermoplastic Composite Pipes (TCP) fabricated from VICTREX™ PEEK polymer are now being evaluated as a potential next generation of flexible pipe solutions to meet these challenges in the energy industry.
A webinar hosted by Smithers Rapra focused on the design and qualification of an innovative solution for use in such demanding environments. Entitled "The Durability of PEEK Polymers in Thermoplastic Composite Pipes for Subsea Oil and Gas Applications", key points discussed in this well-attended event included:
Close co-operation the key to success
The Hybrid Flexible Pipe (HFP) from Technip FMC (TFMC) has been proposed as a solution to the challenges described. Led by TFMC and using the proven m-pipe® solution from Magma Global and based upon VICTREX PEEK, as a fundamental ‘building-block’ the webinar details how this exciting hybrid solution from TFMC was conceived and implemented for optimum weight reduction, minimum bend radius (MBR) stability and other benefits.
The well-attended and lively session was led by:
Feedback was very positive, and a series of stimulating points were raised during the interactive Q&A session, including:
For those interested in exploring this innovative solution in more depth, watch the free-access webinar on the qualification of m-pipe® and hybrid flexible pipe for deployment in Brazil´s pre-salt region.
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