THE NEWS

According to Offshore Engineer, Petrobras, Shell, and Strohm have completed a qualification and offshore field trial program for a thermoplastic composite pipe (TCP) flowline specifically designed to operate under the high-CO₂ conditions characteristic of Brazil's deepwater pre-salt. The program covered both qualification testing and an actual offshore field trial, taking the technology beyond laboratory validation into live subsea conditions.

The TCP flowline is Strohm's product, developed in collaboration with the two operators. The scope of the program — combining formal qualification with an offshore pilot — reflects the level of technical scrutiny that pre-salt service conditions demand before any new flowline material can be considered for broader deployment.

No further commercial award or field rollout has been announced at this stage. The completion of the program marks the end of the qualification phase, not the start of a production deployment.

WHY IT MATTERS

The pre-salt Santos Basin sits among the most chemically aggressive deepwater environments in the world for flowline materials. CO₂ partial pressures in pre-salt reservoirs are substantially higher than in most comparable deepwater plays globally, and that single characteristic has historically constrained material selection for flowlines and risers. Carbon steel with corrosion-resistant alloy (CRA) cladding, or fully CRA-lined pipe, has been the conventional answer — reliable, but capital-intensive and logistically demanding at the water depths and distances involved in pre-salt development.

Thermoplastic composite pipe operates on a fundamentally different material logic. TCP combines a thermoplastic liner with reinforcing fiber layers, producing a pipe that is inherently corrosion-resistant, significantly lighter than steel, and spoolable — meaning it can be installed from a reel rather than requiring the J-lay or S-lay vessels typically associated with rigid pipe. For pre-salt operators, the weight and installation-method advantages are not trivial: at water depths beyond 2,000 meters and tieback distances that can extend tens of kilometers, every reduction in installation vessel time and pipe handling complexity has a measurable cost impact.

The specific challenge that this qualification program addressed — high CO₂ service — is the key technical gate for TCP in the pre-salt context. CO₂ permeation through thermoplastic materials is a known engineering concern; the fiber reinforcement layers and any metallic end fittings must be designed and tested to tolerate the permeated gas without delamination, pressure reversal damage, or fitting failure. Completing a qualification program that specifically targets these conditions, and then validating the results through an actual offshore field trial, closes the most significant technical uncertainty that has kept TCP on the periphery of pre-salt flowline conversations.

For Brazilian operators and their supply chains, the implications extend in several directions. First, qualification of a new flowline technology for pre-salt service expands the viable design envelope for future tiebacks and satellite developments. As Petrobras and its consortium partners continue to develop cluster architectures around existing FPSOs, the ability to specify a lighter, spoolable flowline for shorter tiebacks or lower-pressure applications could influence both CAPEX estimates and vessel scheduling on future EPC scopes. Second, the involvement of two major operators — rather than a single champion — in the qualification program lends the result broader credibility. When a technology is qualified through a bilateral operator program, the findings are more likely to be accepted by other operators and by the ANP's technical review processes than if a single company conducted proprietary testing.

For the Brazilian subsea supply chain, the question that follows qualification is localization. Strohm is a Netherlands-based company, and TCP manufacturing currently sits outside Brazil. If TCP moves from qualified technology to specified material on future Petrobras or Shell pre-salt scopes, the local content framework will apply, and the question of whether TCP spools can be manufactured or assembled in Brazil — or whether the technology qualifies for any local content offset mechanism — will become commercially relevant. This is not a near-term constraint, but it is the structural consideration that Brazilian suppliers and industry bodies such as IBP and ONIP will be watching as TCP moves through the commercial pipeline.

There is also a broader signal here about how pre-salt technology development is being organized. The Petrobras-Shell-Strohm structure — two competing operators co-sponsoring a qualification program with a technology provider — is a pragmatic model for sharing the cost and risk of qualifying niche materials that neither operator would fund alone. This kind of pre-competitive collaboration on qualification (as distinct from operational competition on blocks) is consistent with how other technically demanding environments, such as high-pressure/high-temperature plays in the North Sea, have historically accelerated material qualification cycles.

CONTEXT

TCP has been qualified and deployed in other offshore contexts — including flexible riser applications and shallow-water flowlines — but pre-salt high-CO₂ service represents one of the more demanding qualification targets the material class has faced. The completion of this program positions TCP as a candidate technology for consideration in future pre-salt development planning, though the path from qualification to routine specification typically involves additional engineering studies, cost benchmarking against incumbent materials, and regulatory familiarity-building with the ANP.

The broader trend of operators investing in alternative flowline materials for deepwater pre-salt — including unbonded flexible pipe, TCP, and hybrid configurations — reflects the ongoing effort to reduce the cost per barrel of pre-salt development as the easier, shallower satellite opportunities give way to more complex, longer-tieback architectures.

Source: OFFSHORE ENGINEER