Hookdale Dome
Location
T4N, R2W, Bond County (H-5)
References
Buschbach and Bond 1974
Description
The Hookdale Dome provides structural trapping for the Beaver Creek Northeast Gas Field, which was discovered in 1961 and converted to gas storage in 1963. The Yankeetown ("Benoist") Sandstone of the Chesterian Series serves as the reservoir. Stratigraphic factors play a role in entrapment, but an irregular dome covering roughly 1 square mile (2.6 km2) and having closure of 28 feet (8.5 m) has been defined on top of the Yankeetown. A second unnamed dome, slightly smaller than Hookdale and lying just to the west, has closure of about 25 feet (7.6 m) on the Beech Creek ("Barlow") Limestone (ISGS open files). The western dome holds the Beaver Creek North Field, which produced oil and gas between 1949 and 1964. The domes are on the Western Shelf, where strata dip gently southeastward.
