INEOS Energy and Shell Offshore, a subsidiary of Shell, have struck a new upstream alliance.

 

The alliance between the chemicals leader and the global energy giant is aimed at accelerating exploration and development in the Gulf of America, tightening their partnership around infrastructure-linked oil and gas growth.

 

The agreement brings INEOS Energy into a 21% working interest across a portfolio of assets tied to the Appomattox hub, reinforcing its existing positions in Appomattox, Rydberg, the recent Nashville discovery, and the Mattox pipeline. The financial terms were not disclosed.

 

The initial focus is sharply defined: three near-term exploration and production opportunities anchored around existing infrastructure in the Gulf of America Gulf of America. These include Shell’s pre-FID Fort Sumter discovery, the drilling of the Sisco exploration well, and a further exploration well targeted by the end of 2030.

 

INEOS says the deal fits its wider upstream strategy—expanding in proven basins including the Gulf of America, Eagle Ford South Texas, offshore Denmark, and the UK Continental Shelf—while leaning on partnerships with established operators to control cost and risk.

 

A central pillar of the collaboration is the Appomattox platform, a key offshore production hub. 

 

INEOS says the agreement is designed to unlock additional value from nearby discoveries by tying them back into existing infrastructure, enabling “high-margin barrels” through early production systems already integrated with Rydberg and surrounding pipeline networks.

 

David Bucknall, CEO of INEOS Energy, said: "Partnering with Shell on these opportunities is a natural step. We are focusing on areas close to existing infrastructure where we can move quickly, control costs and unlock new production. This is disciplined growth targeting exploration, shared risk, and returns. These opportunities strengthen our portfolio and support long-term energy security."

 

The move underscores INEOS Energy’s push to scale its global upstream footprint while maintaining capital discipline and relying on partnerships with major operators to drive growth.

 

Sir Jim Ratcliffe, Chairman and Founder of INEOS Energy, said: “Growth in an economy is highly correlated to competitive energy prices, and it’s a huge issue for national security. If you can’t get energy, then you can’t run your hospitals, run industry or heat your houses.”

 

The deal signals a broader push by INEOS Energy and Shell to deepen cooperation in tieback-led developments, betting on existing offshore infrastructure as the fastest route to new production and returns.