The Ripalta gas field is located in the Po Valley of northern Italy. The Po Valley is bounded on the west and north by the Alps Mountains and on the south by the Appennine Range. Tertiary deposits within the valley have been folded into numerous anticlines, several of which produce commercial quantities of oil and gas.

The Ripalta structure was discovered in 1940–1941 by use of the reflection seismograph and the first gas well began producing in 1949. Of the 23 wells drilled, 20 are productive from lower Pliocene sands at depths of about 5,200 feet.

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