Since then , it has steadily broadened its activity , establishing companies and subsidiaries and creating an integrated oil and gas industry in Abu Dhabi .
ADNOC was established in 1971 to operate in all areas of the oil and gas industry .
Since then , ADNOC has steadily broadened ADNOC 's activity , establishing companies and subsidiaries and creating an integrated oil and gas industry in Abu Dhabi .
ADNOC was established in 1971 to operate in all areas of the oil and gas industry .