A final investment decision is the point at which a person or organization chooses to move forward with a particular project or purchase after reviewing all the necessary information and options. It is like deciding to buy a house after considering all the costs, benefits, and alternatives. This decision is important because it determines whether and when the investment will be made, impacting future financial plans and outcomes.
ultra-deep waterstechnical
Ultra-deep waters are ocean areas where oil and gas exploration or production occurs at very great depths—generally around 1,500 meters (about 5,000 feet) or more—requiring specialized rigs and equipment. For investors, these projects matter because they carry higher costs, technical and safety risks, and longer timelines, but can also tap large, hard-to-reach reserves; think of it like constructing a skyscraper instead of a house—bigger payoff but far greater complexity and expense.
floating production unittechnical
A floating production unit is a ship-like platform that sits over an offshore oil or gas field and receives, processes, stores and sometimes offloads hydrocarbons brought up from underwater wells. Think of it as a small factory and storage tank that floats where the product is extracted. Investors care because it is a major revenue-generating asset with large upfront cost, operational risks, contract and uptime implications, and potential decommissioning liabilities that affect cash flow and valuation.
floating storage and offloading facilitytechnical
A floating storage and offloading facility is a ship-like platform that stores and transfers crude oil or gas liquids from production wells at sea to tankers or pipelines, acting like a mobile storage tank and loading dock combined. Investors care because these units determine how quickly and reliably produced oil can reach markets, affecting sales timing, storage costs, production uptime and exposure to operational, maintenance and environmental risks.
nameplate capacitytechnical
Nameplate capacity is the maximum output a power plant, factory, or piece of equipment can produce under ideal conditions, as specified by the manufacturer. Investors care because it sets the upper limit on potential revenue and growth—actual earnings depend on how often and efficiently that capacity is used, similar to a car’s top speed versus how fast you actually drive in daily traffic.
taxes and royaltiesfinancial
Taxes are mandatory payments a company makes to governments on earnings, sales, or assets; royalties are ongoing fees paid to the owner of a resource, patent or license for the right to use or extract it—think of taxes as government ‘tolls’ and royalties as rent for using someone else’s property. Both reduce cash available for growth, dividends and debt service, so their size and predictability directly affect profitability, project viability and investor returns.
HOUSTON--(BUSINESS WIRE)--
Woodside Energy, in partnership with Petróleos Mexicanos (PEMEX), has commenced the drilling campaign at the Trion Field, located in ultra-deep waters of the Gulf of Mexico.
The start of drilling marks a significant milestone in the development of one of Mexico’s most important offshore energy projects and represents a key advancement toward full field development following the project’s final investment decision (FID) in 2023.
Woodside Acting CEO Liz Westcott said: “The start of the drilling program represents a milestone for the Trion Project and for Mexico’s deepwater oil and gas sector. It underscores the strength of our collaboration with PEMEX and our shared commitment to delivering this world-class project safely and efficiently. Trion is more than a significant resource – it is an opportunity to enhance Mexico’s energy security, build local capability and generate enduring economic value for the country.”
The drilling campaign includes the execution of 24 subsea wells which will be connected to a floating production unit (FPU) named Tláloc, with a nameplate capacity of approximately 100,000 barrels per day. The development incorporates associated subsea infrastructure and export systems to ensure safe, efficient and reliable operations. Production from Trion will be loaded into a floating storage and offloading facility (FSO) named Chalchi, with a capacity of 950,000 barrels.
The wells will be drilled by Transocean’s Deepwater Thalassa, supported by supply vessels and logistics services operating from ports in the state of Tamaulipas, strengthening local and regional supply chains. The Deepwater Thalassa arrived in Mexican waters on 5 March 2026.
Since FID for Trion, engineering, procurement and operational planning activities have progressed in line with the approved development schedule. The project remains on track to achieve first oil in 2028.
Woodside Vice President Trion Stephane Drouaud said: “The progress we are seeing at Trion reflects the dedication and expertise of our project team and partners who have worked tirelessly to advance this development. From engineering and planning through to drilling execution, the team is safely and systematically moving the project forward.”
Trion is expected to generate significant economic benefits, including direct and indirect employment opportunities and expanded participation for Mexican suppliers. Over the life of the project, Trion is expected to deliver more than US$10 billion in taxes and royalties to Mexico.
Woodside holds a 60 percent participating interest in Trion and serves as operator, alongside PEMEX with 40 percent.
About Woodside Energy
Woodside is a global energy company. Driven by a spirit of innovation and determination, we established the liquefied natural gas industry in Australia in the 1980s. We provide the energy the world needs to heat homes, keep the lights on and support industry. Today, our strategy is to thrive through the energy transition with a resilient and diversified portfolio of oil, gas and new energy projects in Australia, North America and Africa.
