Located in the petroleum-rich Permian Basin, Pecos is one of the most prolific oil- and gas-producing counties in Texas. The petroleum business here began about 1900 with the drilling of the Turney well near an ancient "seep", a traditional local source of oil for lubricating and medicinal purposes. A short-lived boom in 1921 caused by the discovery of the "Miracle Well" heralded the arrival of the fabulous Yates oil field (1926), indicating the area's great potential oil wealth. Since that year over 710 million barrels of oil have been produced from the Yates, Fort Stockton and other county fields. The presence of natural gas, known for years, was slow to be exploited because gas was considered an undesirable by-product of the oil business. The first commercial use of gas here was inspired after it was found by workers drilling a water well, in 1925. The discovery, about 1948, of Santa Rosa field spurred exploration that brought in the Puckett field in 1952. Subsequent deep drilling tapped many extensive pools, including in 1963 the prolific Gomez Field, which had produced over 478 billion cubic feet of gas as of 1970. Today petroleum is the single most important economic asset of Pecos County.