Amir Moqiseh, NIOC’s director of investment and business, signed the agreement on behalf of the company. The deal covers associated gas from the Cheshmeh Khosh, Dehloran, Azar and Paydar-e Gharb oil fields.

The NGL 3100 complex has been built on 101 hectares in the Dasht-e Abbas and Cheshmeh Khosh areas of Ilam province. It is designed to collect and process associated gas from the North Dezful fields, including Dehloran, Danan, Azar, Cheshmeh Khosh and Paydar-e Gharb.

Investment in the complex by the Oil Industry Pension, Savings and Welfare Fund exceeds $1 billion.

The project is expected to create added value through associated-gas processing while reducing flaring, helping conserve hydrocarbon resources, cutting pollutants from gas combustion and contributing to efforts to address the country's gas imbalance.

The complex's feedstock includes 120 million cubic feet per day of sour rich gas from the Dehloran, Danan and Azar fields; 38 million cubic feet of sour rich gas from Paydar-e Gharb; 56 million cubic feet of sweet rich gas from Cheshmeh Khosh; and 21 million cubic feet of sweet rich gas from Paydar-e Gharb.

Some of the gas has been supplied to Dehloran Petro-Refinery since August 2025, when the complex began operations. Collection of additional gas has also been assigned to the company under flare-gas recovery projects to ensure a stable feedstock supply.

At full feedstock capacity, NGL 3100 is expected to produce 40,000 barrels per day of C2+ products, 850 barrels per day of C5+ gas condensates, 345 metric tons of granular sulfur and about 151 million cubic feet per day of sweet lean gas, or methane.

The project is also expected to support economic development in the disadvantaged Dehloran region by creating about 1,000 direct jobs and 3,000 indirect jobs.