Petroleum industry in Illinois, 1980: oil and gas developments, waterflood operations

Illinois produced 22,702,000 barrels of crude oil in 1980. The value of this crude oil is estimated to be $800 million. New test holes drilled for oil and gas numbered 1,921, resulting in 1,043 oil wells, 7 gas wells, and 871 dry holes. In 1980, 245 service wells (water input, salt water disposal, etc.) were reported. Of these, 145 were newly drilled wells, and 100 were old wells converted to service wells. Only 8 structure tests were reported in connection with oil exploration and development. Six oil fields, 41 new pay zones in fields, and 55 extensions to fields were discovered in 1980. Five new waterflood projects were reported, 5 projects were abandoned, and 1 project was reactivated. New projects increased the area subject to fluid injection by 780 pay acres; however, total pay acres under fluid injection declined by 19,721 acres.