PT Migas Hulu Jabar (MUJ) was given a mandate by the Governor of West Java as a BUMD to receive 10% Participating Interest (PI) of the Offshore North West Java (ONWJ) Work Area. MUJ appointed a subsidiary, PT. Migas Hulu Jabar ONWJ (MUJ ONWJ) as the manager of the 10% PI WK ONWJ which has been effective since 2017. MUJ has a majority stake in MUJ ONWJ and other shares are divided into several other regional companies, namely PD Petrogas Persada Karawang, PD Bumi Wiralodra Indrmayu, PT Subang Sejahtera, PT Bina Bangun Wibawa Mukti and PT Jakarta Propertindo.
ONWJ Working Area is one of the oil and gas working areas which is the mainstay of national oil and gas production. In 2020, PT Pertamina Hulu Energi ONWJ (PHE ONWJ) as the operator of the ONWJ Working Area is the top five national oil and gas producers.