What is the Trion project and why is it significant for Woodside and PEMEX?

Trion is a $7.2 billion ultra-deepwater development located in the Perdido Fold Belt of the Gulf of Mexico, sitting at water depths exceeding 2,500 meters. It represents Mexico's first-ever commercial deepwater oil development, serving as the proving ground for joint-venture collaboration between PEMEX and foreign operators.

Why does PEMEX need international partners like Woodside for offshore exploration?

PEMEX carries heavy debt burdens and lacks the specialized technical capabilities and capital required to execute complex ultra-deepwater drilling independently. Partnering with seasoned global operators like Woodside allows Mexico to explore high-risk, high-reward deepwater plays without bearing the entire financial and operational exposure.

Does this memorandum of understanding legally commit both parties to new drilling campaigns?

No, a memorandum of understanding is a non-binding strategic framework designed to establish terms for dialogue, technical evaluations, and bilateral cooperation. Concrete drilling programs, asset acquisitions, or capital expenditures will require the negotiation and execution of binding commercial contracts and regulatory approvals.

Rigzone · September 3, 2026 (1d ago) · 1 min read

Woodside, PEMEX to Explore More Oil offshore Mexico

Analysis

AI-assisted analysis · reviewed by Yuri Kan

Australian independent Woodside Energy has formalized a memorandum of understanding with Mexico's state-run Petróleos Mexicanos to pursue further upstream opportunities across the Gulf of Mexico. This agreement signifies growing mutual confidence following the sanctioning of the landmark Trion ultra-deepwater development, establishing a foundation for expanded bilateral collaboration. For Mexico, the move leverages international capital and technical mastery to revitalize offshore output, while allowing Woodside to consolidate its strategic footprint in a high-potential frontier basin.

Key Facts

Woodside Energy and Petróleos Mexicanos (PEMEX) signed a memorandum of understanding aimed at expanding offshore exploration and production activities in Mexico.
The new agreement seeks to build upon the momentum of the joint Trion deepwater oil development, currently under construction in the Perdido Fold Belt.
Woodside acts as the operator of the Trion project holding a 60 percent participating interest, while PEMEX maintains the remaining 40 percent stake.
The $7.2 billion Trion field development plan was sanctioned by Woodside in mid-2023, targeting first oil by 2028 from an estimated resource base of 458 million barrels of oil equivalent.
The memorandum allows both operators to jointly assess additional exploration acreage, evaluate technical synergies, and streamline potential future farm-ins across offshore Mexican basins.

Background & Context

The foundation for international deepwater investment in Mexico was established during the country's historic 2013-2014 energy reforms, which dismantled PEMEX's long-standing monopoly. Australia's BHP Petroleum originally secured the competitive farm-in rights for the Trion field in late 2016, marking the nation's inaugural deepwater joint venture. Woodside subsequently inherited this operatorship and strategic Mexican position following its merger with BHP's petroleum division in June 2022. Facing steep natural declines at legacy shallow-water fields like Cantarell, PEMEX increasingly relies on technical partnerships to access technically complex, capital-intensive ultra-deepwater reserves.

Market Impact

This agreement provides a strong vote of confidence in Mexico's deepwater hydrocarbon potential amid years of regulatory uncertainty and suspended upstream licensing rounds under the outgoing political administration. For PEMEX, collaborating closely with a proven deepwater operator mitigates severe balance sheet constraints while transferring critical ultra-deepwater operational expertise. Woodside benefits by securing first-mover advantage and preferred access to contiguous acreage surrounding its core infrastructure at Trion, improving regional development economics. The broader supply chain and international deepwater drilling contractors will view this pact as a stabilizing signal that could unlock sustained offshore contracting activity in the southern Gulf of Mexico over the coming decade.

What to Watch

Market participants should monitor the finalization of definitive joint venture agreements or acreage assignments emerging from the preliminary memorandum framework. Key project delivery milestones for the Trion floating production unit (FPU) will serve as the primary operational bellwether for how effectively this partnership functions in practice. Additionally, energy analysts will scrutinize the incoming Mexican federal administration's policy trajectory to see if formal deepwater bid rounds or targeted farm-outs are reinstated to officially accommodate these expansion plans.

Frequently Asked Questions

What is the Trion project and why is it significant for Woodside and PEMEX?: Trion is a $7.2 billion ultra-deepwater development located in the Perdido Fold Belt of the Gulf of Mexico, sitting at water depths exceeding 2,500 meters. It represents Mexico's first-ever commercial deepwater oil development, serving as the proving ground for joint-venture collaboration between PEMEX and foreign operators.
Why does PEMEX need international partners like Woodside for offshore exploration?: PEMEX carries heavy debt burdens and lacks the specialized technical capabilities and capital required to execute complex ultra-deepwater drilling independently. Partnering with seasoned global operators like Woodside allows Mexico to explore high-risk, high-reward deepwater plays without bearing the entire financial and operational exposure.
Does this memorandum of understanding legally commit both parties to new drilling campaigns?: No, a memorandum of understanding is a non-binding strategic framework designed to establish terms for dialogue, technical evaluations, and bilateral cooperation. Concrete drilling programs, asset acquisitions, or capital expenditures will require the negotiation and execution of binding commercial contracts and regulatory approvals.

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