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223

Glauconitic Tilted Oil / Water Contact Analysis

Jenner/Suffield, AB

RPCL

CEMH

August 2000

Play(s):
N/A
Glauconitic Resource Oil
Fluid(s):
Heavy Oil
N/A
Area:
Jenner/Suffield, AB
N/A

This study investigates the role of hydrodynamics as a tilt-causing mechanism in Glauconitic sandstone oil pools in the Jenner-Suffield area. An integrated hydrodynamic evaluation of the Mannville-Glauconitic sandstone formation was conducted. The regional hydraulic head gradient in the Glauconitic sandstone is from south to north, so oil-water contacts (OWC) in the study area will generally be tilted down to the north. Hydrodynamic OWC tilts on the order of 1-5 m/km are predicted in the Main Sands where the hydraulic gradients are weak. Steeper tilts may occur in tighter reservoir intervals where the head gradients are steeper. The predicted OWC tilts match the observed tilts, suggesting that hydrodynamics is the dominant trap mechanism in the Glauconitic sandstone.