Jonah Field is located in southern Sublette County, Wyoming, about 35 miles south of Pinedale and about 70 miles north of Rock Springs. After being rediscovered in the early 1990s, Jonah Field was heralded as one of the most significant on-shore natural gas discoveries in the second half of the 20th century.
Jonah represented a turning point in natural gas production as the gas contained in Jonah is trapped deep underground in extremely tight sand formations. New technologies and higher gas prices allowed companies to lucratively produce gas from an unconventional source.
Due to the depth of the wells and complexity of the perforation techniques used to fracture the underground sand formations, drilling and production in Jonah requires substantially larger workforce requirements over a longer period of time then compared to conventional on-shore fields.
The success of effective and lucrative gas extraction from the tight sand field led the way to future expansion of the nearby Pinedale Anticline
field a few years later.