The Salt Creek Oil Field is located in Natrona County, Wyoming.[2] By 1970, more oil had been produced by this field than any other in the Rocky Mountains region and accounted for 20 percent of the total production in Wyoming.[3]
Petroleum seeps in the area were known before 1880, but oil strikes near Lander led to claims by Schoonmaker and Cy Iba.[4] In 1889 the first well to strike oil was drilled in the Shannon pool by Philip M. Shannon, president of the Pennsylvania Oil & Gas Company, who in 1895 built an oil refinery in Casper to process the oil.[5] Dr. Porro, an Italian geologist working for the Dutch company Petroleum Maatschappij Salt Creek in 1906, located the Dutch No. 1 near a large oil seep south of the Shannon wells, which was drilled in 1908.[6] The "gusher" well reached an oil sand after drilling through 1,000 feet (300 m) of shale.[7]
In 1915, a portion of the Teapot Dome was made Naval Petroleum Reserve Number 3.[8]