Oil! oil museums in Kern County, California and the libraries and museums in the area around Silver City, New Mexico, as well as the period photography, which played a large part in shaping his screenplay and the film. Oil! Oil! is a novel by Upton Sinclair, first published in 1926–27 and told as a third-person narrative, with only the opening pages written in the first person. The book was written in the context of the Harding administration's Teapot Dome Scandal and takes place in Southern California. It is a social and political satire skewering the human foibles of all its characters.
Oil production and smuggling in ISIL to produce oil from those oil fields it controls. Estimates of the income ISIL derived from its oil operations vary. In 2014, Dubai-based energy analysts put the combined oil revenue from ISIL's Iraqi-Syrian production as high as US$3 million per day. An estimate from October 2015 indicated the production to be about 34,000-40,000 bpd that was sold at US$20–45 at the wellhead generating an income of US$1.5 million per day. Another 2015 estimate sets the monthly income as high as US$40 million. Various other reports indicated in 2015 that ISIS obtained 1.1 to 1.5 million dollars a day from selling