Zakum Development Company (ZADCO) was established in November 1977 to develop and operate the Upper Zakum Field, one of the largest oil fields in the world. Currently, Zakum Development Company (ZADCO) has three major shareholders, Abu Dhabi National Oil Company (ADNOC) with 60% share, ExxonMobil with 28% share, and Japan Oil Development Company limited (JODCO) with 12% share.
ZADCO develops and operates the Upper Zakum field on behalf of ADNOC and for the benefit of the shareholders. Besides Upper Zakum, the Company operates Umm Al Dalkh, and Satah fields. ZADCO adopts the latest technologies in developing and operating these oil fields.