The Tippett field comprises a group of eight pools located in northwestern Crockett County and adjacent Pecos County, Texas. The field was discovered in 1947, and to January 1, 1960, has produced about 2,700,000 barrels of oil and 1,540 million cubic feet of gas. The chief producing zones are conglomerates in the basal Permian at 5,800-6,300 feet. Minor producing zones are found in middle Permian dolomite from 3,800 to 4,500 feet. The trap is formed by an anticline about 6 miles long and 4 miles wide, the axis of which trends northwest and southeast. The structural relief on the basal Permian pay zones is about 300 feet. The anticline is clearly discernible at the surface, so that discovery may be credited to both surface work and shallow stratigraphic drilling. Total pro uctive area is about 2,540 acres. Though water is found in the basal Permian conglomerate reservoirs, a large gas cap in most of them probably furnishes most of the oil-producing energy. Some conglomerate reservoirs contain only gas. The pay conglomerates appear to be derived from Devonian and Ordovician cherty limestones and dolomites, which were truncated by Pennsylvanian erosion. The residual cherts seem to have been reworked into shingle beaches and then consolidated into porous conglomerates containing very little calcareous cement. Future productive prospects lie chiefly in gas reservoirs on the structurally higher part of the anticline.