Proven results, real impact
Serica/Dana – COSL Innovator: Delivering Measurable Savings Through Well Economics
2nd Oct 2025
This five-well drilling campaign across the Triton, Gannet E, Guillemot, Evelyn, and Belinda fields set a new benchmark for low-carbon, high-performance drilling in the UKCS. Delivered 27 days ahead of plan, the project demonstrated how Stepwise-enabled collaboration, live emissions monitoring, and data-driven decision-making can deliver measurable well economics while strengthening ESG credentials.
Skakeholders
The challenge
Balancing cost, efficiency, and compliance in a complex campaign
Operators face mounting pressure to reduce emissions, cut rig time, and meet investor and regulatory expectations without compromising well delivery. For Serica and Dana, the challenge was to deliver a multi-well campaign that balanced economic performance with decarbonisation, while ensuring transparency and compliance with North Sea Transition Authority stewardship expectations.
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COSLInnovator. Image courtesy of COSL
The approach
Embedding collaboration, transparency, and efficiency into operations
Stepwise was integrated into both rig and vessel reporting, enabling real-time emissions tracking and operational insights. Daily reporting, regular cross-company alignment, and well-by-well benchmarking ensured all partners — Serica, Dana, Petrofac, and COSL — worked from a single, transparent dataset. This “One-Team” model allowed for proactive energy management, identification of fuel-saving opportunities, and systematic implementation of Emission Reduction Initiatives (ERIs).
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The result
Delivering measurable savings and setting a new benchmark
The campaign achieved a 42% reduction in CO₂ intensity (from 3.98 Te/m to 2.3 Te/m) and saved 4,560 tonnes of CO₂. Fuel savings exceeded $1.0 million, equivalent to 8.7% of total fuel spend, while operational efficiency improved by 30%. Crucially, the campaign was delivered 27 days ahead of plan, avoiding further rig-day costs and demonstrating clear ROI. In fact, the savings achieved outweighed the cost of engaging Stepwise, making the service effectively self-financing and delivering an ROI of more than 4x.
Fuel cost savings
CO₂ savings
Operational efficiency improvements
$1.004M
~4 560 Te
~30%
Campaign delivered ahead of plan by
CO₂ intensity reduced
Planned vs actual days
27 days
3.98→2.3 tCO₂
443 vs 416
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* Footnote text to clarify facts and figures based on fuel cost estimates
Campaign overview (when video is available)
Hear directly from operators, drilling contractors, and service partners on how live emissions tracking, data transparency, and a One-Team approach helped deliver measurable cost savings and set a new benchmark for offshore efficiency.
Testimonials
Stepwise reduced the fuel consumption of a 5th gen semi to levels comparable with a HE Jack-Up, achieving well-on-well performance improvements.
Derek Harrold
Well Operations Lead – Serica Energy
The team delivered a unified, data-driven campaign. Real-time emissions monitoringimproved operational efficiency, reduced CO₂ and methane emissions, and strengthened ESG credentials for investor and regulatory engagement
Pål Erik Vang
Chief Engineer – Stepwise
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ROI
The campaign demonstrated that efficiency pays for itself.
The cost of engaging Stepwise is clearly out weighed by the savings generated through the implementation of Emission Reduction Initiatives (ERIs). By identifying and enabling operational efficiencies, Stepwise not only supports emissions reductions but also delivers measurable cost savings, making the service effectively self-financing overtime.
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Thank you!
Collaboration, Transparency, One-Team
A special thanks to the teams from Serica Energy, Dana Petroleum, COSL, and Petrofac, whose commitment to transparency and shared learning made these results possible. Their collaborative effort not only delivered efficiency and cost savings but also set a model for future campaigns in the UKCS.Thank you to the entire team for a best-in-class collaborative effort, where transparency and a true One-Team approach set a new benchmark for offshore efficiency and emissions performance.
Serica Energy: Alex Pirie (Wells Manager), Derek Harrold (Well Operations Lead) and Johnny Pike (ESG)Dana Petroleum: Charlie Taylor (Well Engineering)COSL: Craig Cameron (Project Management) Alan Gregory (Rig Manager) and Torfinn Kalsto (ICT & OT Manager)Petrofac: Kevin Burr (Well Engineering Project Manager) and Simon Nixon (Well Operations Principal Engineer)
Serica Energy: Alex Pirie (Wells Manager), Derek Harrold (Well Operations Lead) and Johnny Pike (ESG)Dana Petroleum: Charlie Taylor (Well Engineering)COSL: Craig Cameron (Project Management) Alan Gregory (Rig Manager) and Torfinn Kalsto (ICT & OT Manager)Petrofac: Kevin Burr (Well Engineering Project Manager) and Simon Nixon (Well Operations Principal Engineer)
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