The San Miguelito oil field, in Ventura County, California, was discovered in November, 1931, by means of surface geology. Accumulation occurs throughout a 2,500-foot series of Pliocene sands in a closed anticline, which is on the westward continuation of the Ventura Avenue axis. The field is bounded on the north by the south-dipping Padre thrust fault, which strikes nearly parallel with the axis of the fold and has an apparent vertical displacement of approximately 3,000 feet.

To date, 81 wells have been drilled and development is continuing. No wells have been abandoned. Total cumulative production to June 30, 1950, was 21,595,000 barrels of oil.

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