NeoCem™ E+ system delivers carbon reduction in the North Sea

Halliburton completes first North Sea deployment of lower-carbon cement system

Halliburton has deployed its NeoCem E+ cement system in the North Sea for operator Aker BP, marking the first field application of the reduced-Portland cement technology. The system is designed to cut Portland cement mass by 50% or more compared to conventional designs while maintaining well integrity and barrier performance.

The deployment represents a step forward in offshore well construction, where cement forms a critical component of well barriers. Reducing Portland cement content matters commercially because cement production is carbon-intensive, and operators face growing pressure to lower emissions across field development activities. For companies working in the North Sea, where regulatory scrutiny on emissions is tightening, adopting lower-carbon cementing technologies may become a competitive requirement rather than an optional improvement.

Halliburton launched NeoCem E+ on 2 November 2022 alongside EnviraCem, expanding its portfolio of reduced-Portland, high-performance cement systems. Both products were developed to incorporate more locally sourced, natural, and recycled materials while reducing cement mass. According to Halliburton, its broader reduced-Portland lineup includes systems ranging from 50% to 70% or greater reduction in cement mass, depending on well conditions and design requirements.

How the reduced-Portland cement system works

NeoCem E+ achieves its carbon reduction by lowering the volume of Portland cement used in the slurry while maintaining structural and sealing performance. Portland cement is the primary binder in conventional well cement, but it is also the main source of embodied carbon in cementing operations. Reducing its mass without compromising barrier integrity requires reformulating the slurry with alternative materials that can still deliver the necessary strength, durability, and zonal isolation.

Halliburton states that NeoCem E+ offers greater elasticity and improved shear bond at lower density compared to traditional cement systems. These properties are important in offshore wells, where formations may shift or where the wellbore must withstand pressure changes over time. A cement system that can flex without losing its seal reduces the risk of barrier failure, which is both a safety issue and a regulatory concern.

The system incorporates locally sourced, natural, and recycled materials as partial replacements for Portland cement. This approach reduces transport-related emissions and sourcing complexity, particularly in remote or offshore environments. However, Halliburton has not disclosed the specific composition of the replacement materials or the technical criteria used to qualify them for barrier applications.

For operators, the practical benefit is the ability to reduce carbon emissions from cementing operations without redesigning well programs or accepting higher risk. Cementing is a standard phase in every well, so even incremental reductions in carbon intensity can scale across large drilling campaigns. In jurisdictions where carbon reporting or emissions pricing applies, that reduction translates to lower compliance costs and improved environmental performance metrics.

North Sea deployment confirms operational readiness

The Aker BP deployment marks the first field use of NeoCem E+ in the North Sea, a region where operational conditions are demanding and regulatory expectations around emissions are high. Successfully pumping the system in this environment demonstrates that the technology can perform under real-world offshore conditions, not just in laboratory or controlled settings.

Aker BP is a significant partner for this type of trial. The company has publicly committed to reducing emissions across its operations and is subject to Norway’s carbon tax and emissions trading obligations. For an operator in that position, adopting lower-carbon cementing technologies aligns with both regulatory compliance and corporate climate commitments. It also signals to supply chains, investors, and regulators that emissions reduction is being pursued across all phases of field development, not just production.

Field trials like this one are critical for validating new cementing systems. Offshore wells operate in complex environments where temperature, pressure, and formation characteristics vary. A cement system must cure properly, bond to both casing and formation, and resist degradation over the life of the well. Proving that a reduced-Portland system can meet these requirements in a live well gives other operators confidence that the technology is viable for their own operations.

The deployment also suggests that Halliburton is positioning the North Sea as a proving ground for lower-carbon well construction technologies. The region has mature infrastructure, experienced operators, and strong regulatory frameworks, making it a useful testbed for innovations that may later be rolled out in other basins. For UK and Norwegian operators, this creates an opportunity to adopt emerging technologies early and potentially influence industry standards as they develop.

What this means for UK operators and suppliers

UK operators face tightening emissions requirements under the North Sea Transition Authority’s emissions reduction targets and the government’s broader net-zero commitments. Cementing operations contribute to Scope 1 emissions when fuel is used to power equipment and to Scope 3 emissions through the embodied carbon in cement itself. Reducing cement mass directly lowers both.

For operators tendering for new licences or seeking to extend field life, demonstrating emissions reduction across all operational phases may become a licensing condition or a competitive advantage. Using lower-carbon cement systems is one way to show that emissions are being managed at the well-construction stage, not just during production. That matters particularly for operators pursuing electrification or other decarbonisation measures, where well integrity and low-carbon construction need to align with overall field emissions strategies.

Supply chain companies working with UK operators may also face pressure to adopt lower-carbon materials and processes. If operators begin specifying reduced-Portland cement systems in their well designs, service companies will need to offer comparable technologies or risk losing work. For suppliers, understanding how these systems perform and what assurance frameworks apply will be important for maintaining competitiveness in a carbon-conscious market.

There are also implications for compliance and reporting. Operators using reduced-Portland cement systems can report lower Scope 3 emissions from purchased goods and services, which matters for companies required to disclose supply chain emissions under SECR or for those preparing for more detailed climate-related financial disclosures. However, the emissions reduction must be verified and quantified accurately, which means operators need clear data from suppliers on the carbon intensity of the cement systems they use.

Verified details of the NeoCem E+ system

The following facts are confirmed from Halliburton’s announcements and industry reporting:

• Halliburton successfully pumped the first NeoCem E+ cement system for Aker BP in the North Sea, marking the technology’s first field deployment.
• NeoCem E+ achieves a 50% or greater reduction in Portland cement mass compared to conventional cement designs.
• Halliburton’s broader reduced-Portland lineup includes systems with reductions ranging from 50% to 70% or more, depending on application requirements.
• The system is designed to incorporate locally sourced, natural, and recycled materials as partial replacements for Portland cement.
• Halliburton markets NeoCem E+ as offering greater elasticity and improved shear bond at lower density compared to traditional systems.
• The technology was announced on 2 November 2022 alongside EnviraCem as part of Halliburton’s expanded portfolio of high-performance, reduced-Portland cement systems.

Barriers to adoption and open questions

Despite the successful North Sea deployment, several factors will influence how widely reduced-Portland cement systems are adopted. One is cost. Lower-carbon materials may carry a price premium, particularly if they require additional processing or if supply chains are not yet mature. Operators will weigh the cost of using reduced-Portland systems against the value of emissions reduction, which varies depending on carbon pricing, regulatory requirements, and corporate climate commitments.

Another factor is technical assurance. Cementing failures can be costly and dangerous, so operators and regulators require strong evidence that new systems perform as reliably as conventional ones. That means field data, independent testing, and potentially updated standards or approval processes. Building that evidence base takes time, particularly for technologies that must perform over decades in harsh environments.

Regulatory acceptance is also important. Well integrity is governed by strict standards, and any departure from established cementing practices must be demonstrated to meet or exceed those standards. In the UK, the North Sea Transition Authority and the Health and Safety Executive both have oversight roles, and operators will need to show that reduced-Portland systems comply with existing well design and abandonment requirements. If standards need updating to accommodate new materials, that process could delay widespread adoption.

Finally, there are questions about scalability and availability. If demand for reduced-Portland systems grows, suppliers will need to scale production and ensure consistent quality across multiple sites and basins. That requires investment in manufacturing, supply chain development, and technical support. For operators, it also means ensuring that multiple suppliers can provide comparable systems, so that competition and availability are maintained.

What UK businesses should consider

For operators planning new wells or workovers, it is worth asking suppliers about lower-carbon cementing options and requesting data on carbon intensity, cost, and performance. Understanding what systems are available and how they compare to conventional designs will help you make informed decisions about where emissions reduction is achievable without adding unacceptable cost or risk.

If you are preparing carbon reduction plans for regulators or investors, include well construction in your scope. Cementing is often overlooked in emissions discussions, but it contributes measurably to field development footprints. Demonstrating that you have considered lower-carbon alternatives strengthens your overall emissions case and shows that reduction efforts extend beyond operational activities.

Supply chain companies should track developments in reduced-Portland cement systems and understand how they might affect procurement requirements. If operators begin specifying lower-carbon materials, you will need to respond with credible alternatives or risk being excluded from tenders. Building relationships with suppliers who can provide verified emissions data and technical support will be important.

For businesses involved in decommissioning and well abandonment, reduced-Portland systems may also become relevant. If lower-carbon cements prove durable and effective, they could be adopted for plugging and abandonment operations, which are a significant part of North Sea activity. Understanding how these systems perform in abandonment applications will be important for companies operating in that space.

Emissions reporting and assurance are also considerations. If you adopt lower-carbon cement systems, ensure that you have robust data on their carbon intensity and that emissions reductions are calculated and reported correctly. This will matter for SECR compliance, voluntary disclosures, and any future regulatory requirements around supply chain emissions.

Where to find further information

The North Sea Transition Authority publishes guidance on emissions reduction expectations for operators, including expectations around well construction and integrity. Their website includes policy updates, licensing information, and emissions reduction targets relevant to UK offshore activities.

The Health and Safety Executive provides regulatory oversight for offshore well integrity and publishes guidance on cementing standards and barrier design. Their publications are useful for understanding the technical and safety requirements that any new cementing system must meet.

For broader context on cement emissions and lower-carbon alternatives, the British Standards Institution publishes standards on cement composition and testing, which provide technical background on how different materials perform and how they are assessed for use in construction and industrial applications.

Halliburton’s corporate website includes technical information on the NeoCem E+ system and related products, though independent verification of performance claims is advisable. Operators should request detailed technical data and case studies when evaluating new cementing technologies for their own projects.