Oil Refining in India

 1825 : EXPLORATION IN INDIA COMMENCED IN UPPER ASSAM BY BURMAH OIL COMPANY.
 1889 : THE FIRST DISCOVERY OF OIL WAS MADE IN DIGBOI WELL-1.
 1901:FIRST REFINERY WAS SET UP AT DIGBOI WITH A SMALL CAPACITY OF 0.5 MMTPA.

 TILL INDEPENDENCE DIGBOI REMAINED THE ONLY REFINERY & THE DEMAND WAS MET THROUGH PRODUCT IMPORTS.
 AFTER INDEPENDENCE STANDARD VACCUM OIL Co, Burmah Shell & Caltex SET UP REFINERIES
TROMBAY - 1954
MUMBAI - 1955
VISAC - 1957
 1958 : PUBLIC SECTOR COMPANY ‘INDIAN REFINERIES LTD’ FORMED FOR PRODCUTION.
 1959 : INDIAN OIL COMPANY FORMED FOR MARKETING.
 MERGED IN 1964 TO FORM INDIAN OIL CORPORATION LTD. THIS DEVOLPMENT LED TO THE COMMISSIONING OF THREE PUBLIC SECTER REFINERIES AT GUWAHATI , BARUANI & KOYALI.
 1960 : NATIONALISATION OF REFINERIES.
 1962 : IOC , GUWATHI
 1964 : IOC ,BARAUNI
 1965 : IOC ,KOYALI
 1966 : COCHIN REFINERIES LTD (Now Merged with BPCL).
 1969 : MADRAS REFINERIES LTD.(CPCL, IOCL Subsidiary)
 1974 : HALDIA REFINERY , IOC
 1979 : BANGAIGAON
 1980-85 : MATHURA REFINERY ,IOC
 1996 : MRPL
 1998 : PANIPAT ,IOC
 1998-2002 : DISMANTLING OF APM
 1999 : RIL & NRL.
 2006 : ESSAR OIL.
 2009 : RPL.