In India, oil wells are found in:

The Correct Answer is Assam. Key Points In India, oil wells are found in Assam. Digboi in Assam is an oil town that can be traced to the early 18th century when oil was first discovered here. Digboi can proudly boast of two unique features: a 100-year-old extant oilfield and the world's oldest operating oil refinery. An oil well is a boring in the Earth that is designed to bring petroleum oil hydrocarbons to the surface. Usually, some natural gas is released as associated petroleum gas along with the oil. A well that is designed to produce only gas may be termed a gas well. According to US Energy Information Administration, India has the 2nd largest proven oil reserves in Asia-Pacific region but, so far the production is done only at 5 locations namely Barmer district of Rajasthan, Gulf of Khambhat (Gujarat), Mumbai High Sea, Godavari-Krishna Basin, and in Assam.