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Global M&A | Global Upstream deal-making in December 2025 – a summary

Ten deals were announced in December 2025, continuing the strong end to the year. The monthly spend level was also the second highest of the…

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Welligence UK M&A | Harbour Energy acquires Waldorf Production

Harbour Energy’s acquisition of Waldorf Production’s UK North Sea assets reshapes the company’s portfolio and tax profile. The transaction deepens exposure to the operated Catcher…

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Welligence UK M&A | TotalEnergies merges UK business with NEO NEXT

UK North Sea M&A accelerates as TotalEnergies merges its UK upstream portfolio with NEO NEXT, creating NEO NEXT+. The combined business becomes the largest oil…

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Global M&A | Global Upstream deal-making in November 2025 – a summary

Ten deals were announced in November 2025, a big step up from the prior month and above the rolling 12-month average. There were no large…

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Offshore Electrification Sinks in the New Tide of Upstream Decarbonization

Offshore electrification in the North Sea is becoming increasingly uneconomic, even with Norwegian carbon prices reaching 237 USD/ton by 2030, pushing Norway and the UK…

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UK M&A | Perenco acquires 50% stake in Blythe & Elgood

Perenco’s M&A move in the Southern North Sea adds a 50% operated stake in the Blythe and Elgood gas fields. It acquires the interest from…

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Global M&A | Global Upstream deal-making in October 2025 – a summary

Just three transactions were announced in October 2025, half the rolling 12-month average. Serica Energy and Tenaz Energy continued their respective expansion drives in the…

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Welligence Global | Unconventional Hydrocarbon Activity Update

This note reviews the emerging role of international unconventional hydrocarbons alongside deepwater as a source of future supply growth, summarizing current activity and status across…

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Welligence Global Q3 2025 M&A Quarterly | Has global deal-making reached a nadir?

Around US$17 billion was spent on M&A globally in Q3, across 37 transactions. Spend was the lowest quarterly average of the post-Covid era. North America…

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UK M&A | Serica Energy to acquire bp’s Culzean interest

UK North Sea M&A momentum continues as Serica Energy agrees to acquire bp’s non-operated stake in the Culzean gas-condensate field. The deal is for a…

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