On the shimmering waters of the Gulf of Thailand, drilling platforms operate day and night, and the abundant natural gas underground is continuously transported to Thailand and Malaysia through pipelines. On September 1, 2026, this sea area ushered in a historic moment: Thailand's upstream oil and gas company PTTEP and Malaysia's national oil company Petronas officially signed a package of long-term agreements, covering production sharing contracts and natural gas sales agreements, involving offshore natural gas blocks jointly developed by the two countries in the region. Both contracts have a term of 35 years, effective from January 1, 2026, laying the foundation for energy cooperation for the future generation.

Signatory and Block Overview

The signing parties for this contract are related enterprises under PTTEP's subsidiary and Petronas' exploration and production subsidiary. All parties have signed a production sharing contract with the joint management agency of Mattei for the A-18-01 block. According to the contract, Petronas and PTTEP each hold 50% of the participating equity in the asset and will continue to carry out oil exploration, development, and production operations in the joint development area. Meanwhile, PTTEP、 The joint management organization and related Malaysian enterprises have signed a natural gas sales agreement with the natural gas buyer for this block.

Block A-18-01 is located in the southern part of the Gulf of Thailand and belongs to the joint development area between Malaysia and Thailand. The block covers an area of approximately 3494 square kilometers, including the original A-18 block area and newly expanded areas. The natural gas production capacity of the block is approximately 300 million to 400 million standard cubic feet per day, and the produced natural gas is evenly distributed between Thailand and Malaysia.

Energy Supply and Strategic Significance

The natural gas supply to Thailand accounts for about 4% of the country's total natural gas demand, mainly used for power generation in the southern region of Thailand. The A-18-01 block is an important source of natural gas and condensate resources for both countries, with strategic significance in supporting their natural gas demand and strengthening long-term energy security. Against the backdrop of profound adjustments in the global energy landscape and the strengthening of energy independence capabilities by various countries, Thailand and Malaysia have locked in a stable cross-border natural gas supply channel through this 35 year long-term agreement, building a solid institutional framework for regional energy security.

A model of regional cooperation

The signing of this agreement marks a more certain step forward for the two countries in jointly developing regional energy cooperation. Analysts point out that the binding arrangement between long-term production sharing contracts and sales agreements provides stable expected returns for project investors and predictable supply guarantees for the natural gas markets of the two countries, making it a model case of cross-border energy cooperation in Southeast Asia. With the contract officially taking effect in early 2026, the development and production of Block A-18-01 will continue to provide strong support for energy supply and economic development in the Gulf of Thailand region.Editor/Yang Meiling