CO2 handling and reinjection units selected for Thailand’s first CCS project

Two radial barrel (RB) compressor skids for CO2 handling and reinjection will be supplied by Everllence for PTTEP’s Arthit carbon capture and storage (CCS) project, Thailand’s first offshore facility designed to handle and store liquefied carbon dioxide.

In 2025, state-owned oil company PTTEP took FID on the project, which will have the capacity to capture and store up to 1M tonnes of CO2 annually. The offshore facility will be engineered to reuse existing infrastructure at the Arthit gas field in the Gulf of Thailand. When it opens in 2028, CO2 storage will be ramped up at the facility, and is not expected to impact gas production from the field.

When announcing the FID, PTTEP chief executive Montri Rawanchaikul said the Arthit CCS project “will serve as a pilot for cultivating expertise and driving CCS adoption in Thailand.”

Progress in engineering is well underway. Technip Energies was awarded a contract in December 2025 by Thoresen Jutal Offshore Engineering Heavy Industries Ltd (Thailand) to engineer for new CCS processing units and CO2 injection facilities with brownfield modifications to the existing Arthit central processing platform.

PTTEP’s US$320M investment in the Arthit CCS project is central to Thailand’s greenhouse-gas reduction initiative under the Nationally Determined Contribution Action Plan on Mitigation 2021-2030.

Everllence’s supply scope covers two compressor trains based on RB barrel-type compressing technology for CO2 handling and reinjection. Both units will be driven by Solar Turbines’ gas turbines. To manage the significant changes in density near its critical point (approximately 74 bar, 31°C), the project uses dynamic process simulation to optimise system performance and ensure efficient operation. The equipment will be installed offshore at the Arthit field, with storage operations scheduled to begin in 2028.

“CO2 capture and storage is becoming an indispensable lever for reducing emissions in gas production. With our compressor technology, we bring proven expertise and robust performance to a project that sets an important precedent for the region,” said Everllence head of sales, Industries SEA, Daniel Schmidli.

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