INDIAN GEOGRAPHY

Detailed explanation-1: -It produces 3.00 MMTPA of liquefied petroleum gas (LPG), petrol, kerosene, diesel, furnace oil coke etc. The third refinery in the state was established at Dhaligoan near Bongaigaon in 1962. With a production of 2.35 MMTPA, it is known as Bongaigaon refinery and petro-chemicals limited (BRPL).

Detailed explanation-2: -Digboi is known as the Oil City of Assam where the first oil well in Asia was drilled. The first refinery was started here as early as 1901. Digboi has the oldest oil well in operation.

Detailed explanation-3: -History of Petroleum in Assam: In 1825, British Lieutenant Wilcox accidentally discovered petroleum in Assam. In 1866 first oil well was dug near Jaypore. In following years several attempts were made to extract oil. But actual oil exploration and extraction started with Digboi Well No-1 in 1889.

Detailed explanation-4: -Petroleum System : All the oil and gas fields, discovered till date in the Upper Assam shelf, are situated mostly on the southeastern slope of the Brahmaputra arch, and almost all the major oil fields like Nahorkatiya, Lakwa, Lakhmani, Geleki, Dikom Kathaloni etc.

Detailed explanation-5: -The Digboi field: ADVERTISEMENTS: The Naharkatiya field: It is located at a distance of 32 km southwest of Digboi at the left bank of Burhi Dibing river. The Moran-Hugrijan field: It is located about 40 km south-west of Naharkatiya.