Shell Offshore Inc. has agreed to sell its 50% non-operated working interest in the Na Kika deepwater platform and associated fields in the Gulf of Mexico, along with its 100% interest in the Coulomb tieback, to subsidiaries of Talos Energy and Ridgewood Energy. The total price tag: $1.7 billion, subject to customary adjustments and certain contingent payments.
The transaction carries an effective date of July 1, 2025, and is expected to close by the end of 2026, pending regulatory approvals.
Shell sells Na Kika stake and Coulomb tieback for $1.7 billion
The deal covers Shell Offshore Inc.’s 50% non-operated working interest in the Na Kika platform and its associated fields, plus Shell’s fully owned Coulomb tieback. Both assets sit in the deepwater Gulf of Mexico. The buyers — subsidiaries of Talos Energy and Ridgewood Energy — are independent upstream operators focused on the U.S. market.
The $1.7 billion figure remains subject to customary adjustments, and certain contingent payments are baked in as well. The final number could shift depending on conditions tied to the assets’ future performance.
Why Shell is divesting: Portfolio reshaping in upstream
Shell’s Upstream President Peter Costello framed the sale as a deliberate move to keep the company’s portfolio competitive. “The Gulf of Mexico is one of our highest-value basins, and we are actively shaping our portfolio to ensure our upstream business continues to be resilient and increasingly competitive,” he said in a statement accompanying the announcement.
The core reason for the exit comes down to production outlook. Shell’s internal modeling suggests Na Kika and Coulomb won’t be meaningful contributors to production by 2030—a telling datapoint for assets that currently generate real output.
For 2025, Shell’s entitlement share of production from these two assets was 37,000 barrels of oil equivalent per day. Proved reserves stood at 4.3 million boe for Na Kika and 7.2 million boe for Coulomb at the end of 2025. Those aren’t trivial numbers, but Shell appears to be prioritizing assets with longer production runways rather than defending positions that are winding down.
Costello added that Shell remains “focused on sustaining our material liquids production into the next decade.” That’s language signaling a capital redirect, not a full deepwater pullback.
Key deal terms and conditions
Beyond the headline price, several notable provisions shape the agreement. Shell will receive uncapped upside-linked payments through 2027, tied to performance conditions, and retain overriding royalty interests on production from any new Na Kika tiebacks—subject to conditions. In short, Shell keeps some exposure to the upside if new wells come online after closing.
Decommissioning deepwater infrastructure is expensive, and the buyers assume those obligations along with the requirement to post security against them. That’s a meaningful transfer of future costs. Shell Trading US Company, meanwhile, retains offtake rights from both Na Kika and Coulomb through negotiated agreements with the buyers—keeping Shell in the commercial flow of these barrels even after it exits the ownership structure.
There’s also a procedural hurdle to clear first. BP, as Na Kika’s operator and holder of the remaining 50% working interest, has a preferential right to purchase Shell’s interest. BP has 30 days from notification to exercise that right at the price allocated under the purchase and sale agreement. If BP declines, the transaction moves forward with Talos and Ridgewood.
Background: Na Kika, Coulomb, and Shell’s Gulf of Mexico position
Na Kika is a semi-submersible platform that started producing in 2003—Shell’s only non-operated platform in the Gulf of Mexico. BP runs it and holds the other 50%. The Coulomb tieback, connecting a subsea well to the Na Kika host, came online in 2005. Both assets have been producing for roughly two decades.
None of this signals a retreat from the Gulf. Shell describes the region as one of its highest-value basins and maintains it remains the leading deepwater operator and largest oil and gas producer in the U.S. Gulf of Mexico. The company appears intent on holding that position.
Shell also highlights its dual presence in the Gulf of Mexico and Brazil as a strategic differentiator, characterizing both as among the highest-margin and lowest-carbon production basins globally. That framing reflects how Shell is thinking about which assets to grow versus which to monetize.
Shell continues to hold its interest
The logic here is straightforward: Shell is selling assets it expects to be less relevant by 2030, locking in $1.7 billion today. The 37,000 boe per day in current production and combined proved reserves of roughly 11.5 million boe gave these assets real market value—and Shell is now converting that to cash.
The deal structure preserves some Shell upside through contingent payments, royalty interests, and retained offtake rights. Talos and Ridgewood absorb the decommissioning exposure in exchange for ownership of assets that still have production life remaining.
BP’s preferential right adds a layer of uncertainty before closing. The transaction is expected to wrap up by the end of 2026, giving both sides time to work through regulatory approvals and any BP decision. Until then, Shell continues to hold its interest under the existing arrangement.
Kelly is an experienced writer with 15 years of experience exploring the big stories that shape our world, from tech breakthroughs and space exploration to climate, energy, and the fascinating quirks of science. She has a talent for turning complex ideas into sharp, memorable insights that stay with readers long after they’ve finished reading.
