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NOV Collaborates with Petrobras to Develop CO₂-Resistant Flexible Pipes for Deepwater Applications

NOV’s Subsea Production Systems (SPS) unit signs a Pre-commercial Agreement with Petrobras to develop flexible pipes designed for high CO₂ deepwater applications. This collaboration tackles stress corrosion cracking (SCC) to provide reliable, corrosion-resistant solutions for subsea oil and gas operations.


Closeup of Flexible Pipes for Deepwater Applications
Mar 25, 2025

In February 2025, NOV’s Subsea Production Systems (SPS) business unit signed a Pre-commercial Agreement (ETEC) with Petrobras, marking a major milestone in developing a state of the art solution for flexible pipes designed for high CO₂ deepwater applications. This collaboration focuses on creating stainless steel armouring to combat stress corrosion cracking (SCC) caused by CO₂—a persistent challenge in subsea oil and gas operations.


The ETEC contract represents a pioneering approach in which Petrobras share the risk of developing new technology, with compensation contingent on the solution's successful commercialization. This agreement aims to advance research and development efforts within the oil and gas industry, directly responding to the growing demand for reliable, corrosion-resistant flexible pipes.

The contract stipulates that Petrobras will invest in the development and qualification of this new technology, while NOV’s experts collaborate closely with Petrobras to ensure the solution meets stringent industry standards. The focus is on developing 6inch and 8inch production and gas injection risers and flowlines that can withstand high CO₂ levels in deepwater applications, a critical need for Petrobras and its partners in Brazil.

It’s a unique opportunity for NOV to leverage its expertise in flexible pipe technology to lead a market that demands advanced solutions for challenging subsea conditions.

The technology will not only address the stress corrosion cracking issue but will also preserve the key attributes of standard flexible pipes, —such as ease of installation and compatibility with existing vessels and infrastructure— thereby ensuring minimal disruption and cost-effective integration into Petrobras' field developments.


Working closely with Petrobras, we have developed a solution that is both innovative and practical for the demands of the market. This contract is a testament to how collaboration drives technological advancements that ultimately benefit the entire industry.


Jan Rytter

SPS’ Senior Director of New Product Development

This contract reinforces NOV’s commitment to providing safe, reliable, and cost-effective solutions for the oil and gas industry. The development of SCC‑CO₂‑resistant flexible pipes marks a new chapter in the evolution of subsea technology, with NOV playing a pivotal role in its success.

To discover how our stainless-steel flexible pipe technology can enhance your operations, contact us today or learn more here.

Man in facility standing next to subsea production system designed for deepwater applications