About This Item

Share This Item

The AAPG/Datapages Combined Publications Database

Williston Basin Symposium

Abstract

SKGS-AAPG

Sixth International Williston Basin Symposium, October 7, 1991 (SP11)

Pages 21 - 33

MINTON POOL, SOUTH-CENTRAL SASKATCHEWAN: A MODEL FOR BASEMENT INDUCED STRUCTURAL AND STRATIGRAPHIC RELATIONSHIPS

D. POTTER, Mark Resources Inc., 1300, 800 5th Avenue S.W., Calgary, Alberta, T2P 4A4
A. ST. ONGE, Mark Resources Inc., 1300, 800 5th Avenue S.W., Calgary, Alberta, T2P 4A4

ABSTRACT

In the Minton pool, south-central Saskatchewan, oil is trapped in structural closures in the Ordovician Red River and Devonian Winnipegosis Formation. The Minton pool marks the most northern accumulation of oil in Red River dolomites along a major oil production fairway that extends 200 km (120 miles) south into Richland County, Montana.

Development of structural closure is related to conjugate wrench faults along zones of weakness in Precambrian basement rocks. Growth of structural closures is best expressed by thinning of Silurian age strata. Upper Devonian and lower Mississippian age basement faulting is recognized along the margins of the structural closures. Porosity in both the Red River and Winnipegosis dolomites is best developed within structural closures and is commonly enhanced by fracture porosity. Likewise, porous coral-stromatoporoid bank reservoir facies of the Winnipegosis Formation crown the structural crest thereby suggesting depositional control.

Timing of structural growth, oil reserves, oil source rocks and dolomite reservoir characteristics of the Minton pool are similar to those in the well-established production trend to the south in eastern Montana. Significant exploration potential is indicated in southern Saskatchewan to at least the limits of Red River source rock maturations.

Pay-Per-View Purchase Options

The article is available through a document delivery service. Explain these Purchase Options.

Watermarked PDF Document: $14
Open PDF Document: $24