Petroleum industry in Illinois, 1977. Part 1. Oil and gas developments

Illinois produced 26,272,151 bbl of crude oil in 1976, an increase of 0.8% from 1975. In 1976, the estimated average price per barrel of crude oil produced in Illinois was $10.18; the estimated value of the oil produced in Illinois in 1976 was $267,000,000. The number of new holes drilled to test for oil and gas was 1,257, an increase of 38% from 1975. These tests resulted in 721 oil wells, 11 gas wells, and 525 dry holes. In addition, 45 former dry holes were reworked or deepened and recompleted as oil producers, and 18 former producers were reentered and recompleted as producers in new pay zones (17 oil, one gas). In connection with oil and gas exploration and development, total footage drilled in 1976, including service wells and structure tests, was 3,266,193, an increase of 32.1% from 1975. In 1976, 341 service wells (water input, salt water disposal, etc.) were reported. Seven oil fields, 21 extensions to fields, and 23 new pay zones in existing fields were discovered in 1976. Ten new waterfloods were added and 12 waterfloods were abandoned in 1976. New projects increased the area subject to fluid injection by 2,169 pay acres; extension or reevaluation ofmore » older projects added 2,097 pay acres.« less