The first oil in Turkey was found in 1940 by the General Directorate of Mineral Research and Exploration (MTA) at Raman-1 well. MTA drilled several wells in the Raman region; yet the first commercial oil discovery was made in Raman–8 well which began production in 1948. In 1954 Turkish Petroleum Corporation (TPAO) was established by Law numbered 6327 and all the oil exploration and operations was transferred to TPAO.
TPAO performed extensive appraisal and production activities in Raman and Garzan areas with the drilling and workover rigs which were taken over from MTA. TPAO announced its first oil discovery at 1,456 meters, Garzan-12 well in 1955.
Until 1958, operations in Batman was carried out in well-site quarters. Geology, drilling and production chiefdoms were established in 1959. The investments in Batman had accelerated in line with the extraction of oil from the number of wells, the establishment of refinery and in 1990, Batman became Turkey's 72nd province.
In 2017, 9.2 million barrels of crude oil and 10.2 million sm³ of natural gas were produced from the production wells in Batman.