Drilling activity during 1956 in the San Juan basin of northwestern New Mexico and the Arizona-New Mexico Four Corners platform area increased 32% over 1955. Probably for the first time in the history of exploration in the San Juan basin, oil completions periodically exceeded those of gas.

Thirty-four of the 61 wildcats drilled in the San Juan basin and Four Corners area of Arizona-New Mexico were completed as discoveries, including 20 gas wells and 14 oil wells.

Geophysical activity reached an all-time high in 1956 for the area.

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First page of Developments in Arizona and Western New Mexico in 1956<xref ref-type="fn" rid="fn1"><sup>1</sup></xref>
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