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The AAPG/Datapages Combined Publications Database

CSPG Special Publications


Facts and Principles of World Petroleum Occurrence — Memoir 6, 1980
Pages 996-996
Symposium Abstracts

Milk River Gas in Southern Alberta: Large Reserves in an Unusual Stratigraphic Trap: Abstract

D. W. Myhr1, N. C. Meijer-Drees2

Approximately 141.5 × 109m3 (5 tcf) of recoverable gas is present in the shaly equivalents of the Upper Cretaceous Milk River Formation distributed in the sub-surface of southeastern Alberta over an area of 17 511 km2 (4 328 090 acres).

The productive interval is stratigraphically equivalent to the Milk River (Eagle) Formation which outcrops further south. It represents a shallow-marine facies that is transitional between a beach barrier complex (the Milk River Formation) and a basinal shale facies (the Lea Park Formation). The reservoir is about 85 m (280 ft) thick and consists of thinly interbedded, bioturbated, montmorillonitic, silty shale and permeable, laminated, in places bioturbated, very fine-grained sandstone. The two lithologies form a sedimentological unit or composite bed-set and are similar to the “parallel-laminated to burrowed” sets commonly present in a marine sublittoral environment.

Acknowledgments and Associated Footnotes

1 Anadarko Petroleum, Calgary, Alberta

2 Geological Survey of Canada, 3303 - 33 Street N.W., Calgary, Alberta T2L 2A7

Copyright © 2009 by the Canadian Society of Petroleum Geologists