Oil in North Dakota

According to The Institute for Regional Studies at North Dakota State University:

In 1928 exploration work was conducted in 1928 by Transcontinental Oil Company of Pittsburgh, Pennsylvania. This work was done likely due to the wildcatting of the Big Valley Oil Company which sank a well in the Nesson Valley. In 1937 Standard Oil Company of California leased land and conducted surveys in the state, expending over $100,000. In November 1937 drilling commenced by Manning and Martin Company of Denver. When the well was abandoned in 1938 it had gone to 10,281 feet.

It was not until April 1951 that oil was discovered in North Dakota on the Clarence Iverson farm near Tioga by Amerada Oil Company. The discovery set off an oil boom in western part of the state. Oil production centered in Williams, McKenzie, Mountrail, billings, Bottineau and Burke counties. An oil refinery was constructed at Mandan, N.D. After a decline in oil production in the late 1960s and early 1970s there was a resurgence in oil exploration in the later 1970s. Beginning in 1986 there has been a decline in drilling and oil production, but the Williston Basin may still be under-explored.