The company will employ Bechtel’s ThruPlus Coking technology at the DCU complex to upgrade the heavy oil into light hydrocarbon liquids.

Bechtel Onshore Oil and Gas/Downstream division vice president and general manager Scott Johnson said the ThruPlus Coking technology clubbed with the company’s DCU expertise will increase the Tula refinery complex’s production of gasoline and diesel, and reduce the production of heavy fuel oil.

"The ThruPlus® unit will be one of the largest DCU units in the world and will be configured as two trains with a 166-thousand barrel-per-day total capacity," Johnson added.

"We look forward to working with Pemex to achieve its goal of expanding the refinery’s capabilities."

Bechtel Hydrocarbon Technology Solutions, a subsidiary of Bechtel, acquired the technology from ConocoPhilips in 2011 and has been managing the technology since.