Exploratory drilling decreased 8.8% in Oklahoma during 1960. A success of 27.5% was attained. Fifty-one new-field wildcats were discovery wells from a total of 262 new-field wells drilled for 19.4% success. Significant new-field discoveries were made in the Anadarko and Arkoma basins.

A high exploratory success ratio continues, indicating improved geological and geophysical interpretations. Successful exploratory drilling encouraged additional leasing, resulting in approximately 70% of the state being currently under lease.

Oil production for the year was down slightly compared with 1959. Gas production increased appreciably. Secondary recovery continued to account for a considerable amount of the total oil produced.

Seismic activity decreased 19.5% compared with the previous year.

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