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Total drilling activity increased 1.7% in 1959. 2,561 wells were drilled as compared with 2,520 wells drilled in 1958. Exploratory wells totaled 674, a decrease of 30.1% from the 964 the previous year. Development drilling during 1959 increased 7.6% to 1,683 wells as compared with 1,556 in 1958.
Total oil production decreased 2% from 48,928,383 bbls. produced in 1958 to 48,197,523 bbls. in 1959. This decrease is due to a decline in exploratory drilling although the allowable days increased 0.88% from 10.16 days in 1958 to 10.25 days in 1959.
Geophysical activity increased 8.7% in 1959 as compared with the year 1958. Subsurface geological methods were credited with 76.3% of the new discoveries.
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