In Rajasthan, Petroleum Exploration & Development Activities have now gained momentum after the largest oil discovery Mangla in 2004 in Barmer-Sanchore Basin in last three decades of the Country. Presently, exploration for Oil, Gas
& CBM is underway in 12 Blocks of Rajasthan by National / Multinational Companies against 21 blocks carved out covering about 65ooo sq. km area. Rajasthan has about 1,50,000 sq. km on-land area under 4 petroliferrous basins.
Thus, Rajasthan has the maximum on-land area of the Country available for exploration.