Arthit is developed with numerous platform-drilled production wells on fixed wellhead platforms linked by subsea gathering lines to the Arthit Central Processing Platform. The initial development tied six wellhead platforms to the central facility, and the architecture was designed for modular expansion. The processing installation is paired with the Arthit Quarters Platform and a separate flare structure. The central platform receives and processes combined gas-condensate wellstreams. Documented permanent functions include phase separation, condensate handling, gas processing and export metering. Its integrated topsides weigh approximately 17,000 tonnes and were installed by float-over on a fixed jacket. Accommodation and major utilities are concentrated beside the processing platform, while the satellite wellhead structures primarily support drilling, wellheads and production gathering. Supporting equipment includes electrical generation, chemical injection, process control, emergency shutdown, fire-and-gas detection, firewater and flare systems. Sales gas leaves through the 42-inch Arthit–Erawan gas pipeline, approximately 200 kilometres long, to the Erawan Riser Platform. From Erawan it enters Thailand’s established offshore trunkline system for delivery to shore. Condensate follows a separate 8-inch pipeline approximately 30 kilometres long to Bongkot FSO2, where it is stored and loaded to export tankers. Arthit therefore has no dedicated offshore liquid-storage vessel or direct tanker-loading installation at the processing complex.