Excerpt from Petroleum Industry in Illinois in 1957: Part I. Oil and Gas Developments; Part II. Waterflood Operations Illinois produced barrels of oil in 1957, a decrease of 7 percent from the barrels produced in 1956; the decrease marks a change in trend following three years of steadily increasing production beginning in 1954. The 2585 wells completed in 1957 represent a 29 per cent decrease from the 3640 wells drilled in 1956. The decrease in production was due partly to decline in drilling but mostly to refinery strikes during the summer which forced temporary shut-downs in some pools. Forty-one percent of the 1957 completions were successful. Fifteen new oil pools, one gas pool, 51 extensions to pools, and 16 new pays were discovered in 1957. Reserves are estimated at million barrels on January 1, 1958, 'million barrels below the estimate for January 1, 1957. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.