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The Dodsland field is situated in southwestern Saskatchewan
about 50 miles east of the Saskatchewan-Alberta boundary and 200 miles north of the International Boundary.
The presence of a productive and possibly persistent oil column along the southern part of the Dodsland field was not known until August, 1958, when three pools, known as Gleneath, Eagle Lake, and Braeburn, six miles apart were discovered. Previously the field was known only for its potential of gas reserves. Development of the oil pools is still in the early stages, and it is not yet known whether or not they will join. To date, thirty-five wells have been drilled with an unusually high ratio of successes to failures.
The field has the structure of an irregular dome on which there are several local highs. Gas has accumulated in the higher parts of the structure. Principal oil occurrences are on the southern flanks which are the center of present activity.
The productive zone of the field is a fine-grained, argillaceous, marine sandstone belonging to the Viking formation of Lower Cretaceous age. The sandstone becomes more and more argillaceous towards the northern and eastern parts of the Dodsland structure, and within the map-area grades into shale on the northern flank. The porosity of the sand averages about 23 per cent and the permeability about 15 millidarcys. Gross oil sand thicknesses encountered in wells drilled to date range from 24 to 39 feet.
Well completion procedure usually includes sand fracturing the Viking before placing the well on production. Completion costs are low due to the relatively shallow drilling depth of 2,250 feet.
Wells are drilled in all three pools on an approved 80-acre spacing pattern.
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