The Hoadley gas field is a giant gas condensate accumulation discovered in November 1977, by Sundance Oil Company. The field covers approximately 1,500 sq mi (3,885 sq km) in south-central Alberta, Canada. The producing zone in the Lower Cretaceous Glauconitic formation comprises 25 to 80 ft (7.6 to 24.4 m) sandstone pay. The sand was deposited as an extensive marine barrier bar complex with an approximate width of 15 mi (24 km) and length of more than 130 mi (209 km), trending southwest-northeast. The middle and southwestern portion of the barrier bar (approximately 100 mi, or 161 km, long) is entirely saturated with gas and natural gas liquids, trapped laterally by impermeable shale and updip by shale-filled tidal channels. Of more than 140 Glauconitic gas wells complet d within this section of the barrier bar since discovery, none have tested or produced formation water. The field is estimated to contain an ultimate potential recoverable reserve of 6 to 7 tcf of gas and 350 to 400 million barrels of associated natural gas liquids.

The Hoadley gas field is a buried example of a modern barrier bar. The barrier bar has emerged and submerged several times during seaward progradation. Principal paleogeographic features and depositional facies recognized in the studied area are described herein with well log examples.