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The AAPG/Datapages Combined Publications Database

AAPG Bulletin


Volume: 24 (1940)

Issue: 9. (September)

First Page: 1620

Last Page: 1640

Title: Paleozoic Limestone of Turner Valley, Alberta, Canada

Author(s): W. D. C. Mackenzie (2)


Paleozoic limestone and dolomite of Mississippian age, ascribed to the Rundle formation (probable Madison equivalent of Montana) is the chief oil and gas formation in Turner Valley, Alberta. Production is obtained in two main porous producing zones which are found within the first 450-460 feet of the Paleozoic.

The producing zones are dolomites separated by a dense hard zone with considerable chert. The porosity determinations vary from 1 to 20 per cent. Variations of porosity and permeability, presence or absence of secondary calcite in the porous zones, and fractures make the determination of reserves on the basis of the volumetric method inadvisable. Chemical analyses of the producing zones are given and the results of acid treatments are discussed. Electrical logging is still in the experimental stage.

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