ENEOS operates the Oita refinery, which is located in Oita, Japan. It is a non integrated refinery owned by ENEOS. The refinery, which started operations in 1964, has an NCI of 10.85.

Key processes of the refinery

Crude Distillation Unit (mbd): 136
Vacuum Distillation (mbd): 66
Catalytic Cracker (mbd): 26
Hydrocracker (mbd): 11
Reformer (mbd): 30
Hydrotreater (mbd): 124

The capacity of the refinery is expected to remain the same as 136mbd by 2030.

Maintenance activities at Oita refinery

The Oita refinery witnessed two incidents during the period 2015-2020.


ENEOS Corp (ENEOS), formerly JX Nippon Oil & Energy Corp is a downstream refining company. It refines and markets petroleum and petrochemical products. The company’s products include petrochemicals, lubricants, optical films, greases, fluids, engine oils, composites, Panaferd-AX, Tow PREPREG, sheet pallet system, non-woven textile fabrics and TU cloth. Its services include importing and selling of gas and coal, supply of electricity, developing, manufacturing and marketing of fuel cells, solar power generation and manufacturing of storage batteries. ENEOS is a subsidiary of JX Holdings, Inc, and headquartered in Tokyo, Japan.


Information on the refinery is sourced from GlobalData’s refinery database that provides detailed information on all active and upcoming, crude oil refineries and heavy oil upgraders globally. Not all companies mentioned in the article may be currently existing due to their merger or acquisition or business closure.