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1929 - Darst Creek field was a linear-shaped oil-producing area on the Gulf Coastal Plain in eastern Guadalupe County. Its discovery was made by the Texas Company No. 1 Dallas Wilson on July 18, 1929. Its orderly development was primarily the work of Humble Oil and Refining Company (later Exxon Company, U.S.A.), Gulf Production Company, and Magnolia Petroleum Company, as well as the Texas Company (later Texaco). The original field produced from an average depth of 2,650 feet in a trap along a sealing fault in Edwards limestone of the Lower Cretaceous. On July 18, 1929, the Texas Company brought in the No. 1 Dallas Wilson with initial production of 1,000 barrels of oil per day. In the seventh decade after major companies recognized the need to preserve the reservoir by voluntary proration, the cumulative total from the original Darst Creek field combined with those of Darst Creek-Edwards field and Darst Creek-Buda field was 158,710,523 barrels of oil.