West Central AB: Glauconite

The Glauconitic is considered “one of the most important reservoir units in the Mannville” (Warters et al., 1997), and beginning in the late 70s and early 80s, much effort went into unraveling the widespread Lower Cretaceous Mannville Group stratigraphy.

The Glauconitic Hoadley area is a gas resource play based on exploiting the liquids-rich, gas-saturated sandstones deposited as a barrier bar complex.  Hydrocarbons are trapped by marine shales on the northwest side and by updip traps.  The bar complex extends in a southwest-northeast direction for over 150km’s and is almost 30km’s wide.  The sand units are thick but somewhat heterogeneous.  The sands typically do not produce water and yield approximately 60bbls of liquids per mmcf of gas.

A significant increase in sediment supply could also have initiated seaward progradation. An important drop in sea level resulted in the local ravinement or incision of the now exposed marine deposits.

Play Synopsis

Province:
Alberta
Formation:
Glauconite
Average Porosity:
10%
Completion Type:
Multi-Stage Frac
Depth:
2065m to 2840m
Fluid:
Oil, 38.1 API
Lithology:
Conglomerates/Sand
Water Saturation:
25%
Type Well EUR:
558 mboe
Type Well IP90:
426 boed
west_central_ab_glauconite