In which state is Naharkatiya oil field situated?

The correct answer is Assam. Key Points Naharkatiya is one of the two famous oil fields of Assam. The Naharkatiya field is located at a distance of 32 km southwest of Digboi at the left bank of the Burhi Dibing river. The oil was discovered in 1953 and production started in 1954 . Naharkatia is a town and a town area committee in the Dibrugarh district in the Indian state of Assam. It is well known for its petroleum and gas reserves. Earlier, Duliajan , the head office town of Oil India Limited was in its circle. ​ Additional Information The first oil well was discovered in Assam in Digboi . Crude oil was discovered in Digboi in the late 19th century and the first oil well was dug in 1866 . Digboi is known as the Oil City of Assam where the first oil well in Asia was drilled. The Assam Oil Company was established in 1899 to oversee production. In 1901 , Digboi Refinery was commissioned supplanting the earlier refinery at Margharita . The Indian Oil Corporation Ltd (IOC) took over the refinery and marketing management of Assam Oil Company Ltd. with effect from 1981 and created a separate division. This division has both refinery and marketing operations. The refinery at Digboi had an installed capacity of 0.50 million tonnes per year . Assam has 4 refineries - Noonmati Refinery, Namuligarh Refinery, Bongaigaon Refinery, and Digboi Refinery .