Abu Dhabi National Oil Company (ADNOC) was established in 1971, to operate in all areas of the oil and gas industry and since then has steadily broadened its activity in establishing companies and subsidiaries and creating an integrated oil and gas industry in Abu Dhabi. Today, the company manages and oversees oil production of more than two million barrels a day which ranks it among the top ten oil and gas companies in the world. The Supreme Petroleum Council (SPC), chaired by H.H. Sheikh Khalifa Bin Zayed Al–Nahyan, President of the UAE and Ruler of Abu Dhabi, formulates and oversees the implementation of Abu Dhabi petroleum policies. During the past three decades, ADNOC has expanded its business activities, enhanced its competitive position and so managed to become one of the world's leading oil companies with substantial business interests in upstream and downstream activities, including transportation, shipping, marketing and distribution. ADNOC's efforts in the exploration and production field have concentrated on assessing undiscovered reserves and optimizing hydrocarbon recovery by improving the reservoir management. ADNOC is committed to sustainable development, ensuring a harmonious balance between people’s needs and Earth’s resources, while its track record in HSE sets the standard for the rest of the Arabian Gulf. In the last few years significant achievements were made in the expansion and development of gas fields to meet increased demand from industry gas users and gas injection requirements in order to enhance the oil and condensate recovery from the producing fields. ADNOC has 14 subsidiary companies working in the various fields of the oil, gas and petrochemical industry as well as crude oil and gas transport and services. They include ADCO, ADMA-OPCO, GASCO, ADGAS, ZADCO, TAKREER, NDC, ESNAAD, IRSHAD, FERTIL, BOROUGE, ADNATCO, NGSCO, and ADNOC- Distribution.