The clearance, which is subject to compliance of certain conditions, has been given after taking into consideration the recommendation of a green panel.
The total mining lease area of Jorhat and Golaghat districts is 32.116 sq km and 120.5 sq km, respectively. The total project cost is pegged at Rs 240 crore.
ONGC said the proposed project aims to enhance reliable hydrocarbon supplies, which will bring economic benefits and provide indirect employment opportunities to the local people and also benefit the area by way of improvement in existing infrastructure.
The company has obtained the first stage forest clearance for the project.
ONGC is the largest producer of oil and gas in the country, contributing 72.4 per cent of the crude oil and 48.5 per cent of the natural gas production. At present, over 78 per cent of India's oil requirements are being met through imports.