G. Fong, R. Walker, C. McLaren, and B. Zaitlin

PanCanadian Resources, Calgary, Alberta, Canada

ABSTRACT: Hydrocarbon Distribution Controlled by Facies, Erosion Surfaces and Faulting in the Basal Colorado Sandstone (Albian), Southern Alberta, Canada

In southern Alberta, a sandstone is present at the base of the Alberta (Colorado) group. It is generally less than 10 m thick, but associated incised valley fills are up to 25 m thick. The unit is known informally as the Basal Colorado Sandstone (BCS). It rests unconformably on the underlying non-marine Mannville Group, and is overlain by marine shales and sandstones (Joli Fou and Viking Formations) of the lower part of the Colorado Group.

In the study area the Basal Colorado has produced a total of about 770 BCF of gas since 1959. During this period, single wells have produced up to 67 BCF. There is also one small oilfield in the BCS.

AAPG Search and Discovery Article #90906©2001 AAPG Annual Convention, Denver, Colorado