Workman-Alameda: Midale

The Mississippian Midale in southeast Saskatchewan has produced substantial hydrocarbons since the 1950’s. Since 2012, several companies have utilized multi-stage hydraulic fracturing in lower permeability Midale reservoirs with impressive results. Low production decline rates and existing facilities lead to strong economics. The play is further boosted by large original oil-in-place (OOIP) volumes as it covers a large geographic area. The reservoirs are dolostones in the upper “Marly” unit and limestone in the lower “Vuggy” unit. The overlying Midale Evaporite, an extensive evaporitic mud flat/playa lake deposit within the basal Ratcliffe Beds, provides a seal for hydrocarbon accumulation.

In the Steelman and Workman areas, operators have been drilling open hole horizontal wells in some areas, as well as multi-stage hydraulically fracturing wells where deliverability is reduced.  

Play Synopsis

Province:
Saskatchewan
Formation:
Midale
Average Porosity:
15%
Completion Type:
Multi-Stage Frac/Open hole
Depth:
1200m to 1250m
Fluid:
Oil, 36 API to 40 API
Lithology:
Carbonate
Water Saturation:
35%
Type Well EUR:
70 mboe
Type Well IP90:
80 boed
workman_alameda_midale