The Train 5 project, awarded in June 1997, entailed the construction of a process group with an annual capacity of 2.5 million tonnes. The project contributed to the increase in the crude oil production capacity to 12 million tonnes of sweet crude per year as forecast in Tengizchevroil’s 5-year business plan.

The project involved the engineering, supply of equipment and materials, and construction of the processing unit for crude separation, desalting, condensate stripping, H₂S removal and NGL recovery. The auxiliary units, built in addition to the main processing units, were a 2x40 MW gas turbine generator station, a 110 kV switchyard power management system, a high-pressure boiler plant, a nitrogen unit and a 100-ton/hour water treatment plant. The project was completed in August 2000.

Project 12, that entailed the construction of additional crude separation unit, was completed in year 2000 and increased the total capacity of the production facilities to 12 million tonnes per year.