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Milton Jurassic and Mississippian Deeper Targets

In addition to Viking potential, Petro One has a proposed location on the Milton property for the purpose of testing seismically defined heavy oil targets in Jurassic Success and Mississippian Middle Bakken Sands. These targets key off deep seated structural complexity caused by Devonian salt solution. Maps 5 through 7 and figure 3 illustrate the seismic and structural expression of these prospective horizons.

Jurassic Success

The Mannville – Jurassic boundary in southwestern Saskatchewan is characterized by a complex association of sands, shales and coals that display numerous unconformities. The boundary has been historically divided into several formations and members resulting in a complex nomenclature. The oldest of these units is the Success Formation which is composed of the Jurassic S1 and the Cretaceous S2 members. The S1 is bounded by unconformities and characterized by laminated and bioturbated siltstone, shales and minor mudstones deposited within marginal-marine environments. S2 sandstone overlies the S1 with the contact defining the Sub-Cretaceous Unconformity. The S2 sandstones are quartzose, cherty, kaolinitic and cross-bedded and are interpreted to have formed in a widespread braided stream system. Both the S1 and S2 units are capped by a well-developed paleosol unconformity.

Subsequent regional uplift and erosion during post S2 deposition resulted in the formation of deep valleys. Between adjacent valleys, the Success, Roseray and Rush Lake formations formed cuestas. The occurrence of these valleys and cuestas provide the main trapping configuration for the Success oil-producing trend in SW Saskatchewan. Petro One has recognized a potential cuesta S2 Success trapping on its Milton lands. Utilizing seismic defined closure and offsetting well control the company has calculated possible Success OOIP of 30 Mmbbls. The prospect is supported by an S2 oil show and completion directly offsetting Petro One lands in 8-21-30-27W3.