ABSTRACT
In all, 4,018 wells were drilled for oil and gas in Illinois and Indiana in 1949 as compared with 3,662 in 1948, an increase of 10 per cent. Total oil production increased 3 per cent, from 71,782,000 barrels in 1948 to 74,139,000 barrels in 1949. Wildcat drilling increased from 955 completions in 1948 to 1,217 completions in 1949. Fifty-one new pools, 84 extensions, and 53 new producing zones were discovered in the two states in 1949.
Most of the discoveries in 1949 were in Mississippian formations, but the Devonian limestone produced oil in six new pools, Pennsylvanian sandstone in five, Ordovician limestone in three, and Silurian limestone in one.
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