Field Development and Renewed Reservoir Characterization for CO2 Flooding of the Hall-Gurney Field, Central Kansas

Kansas Geological Survey
Open-file Report 2001-38

Core Petrophysical Properties

Carter-Colliver Lease Properties

Carter-Colliver lease porosity and permeability (k) fall within the spectrum exhibited by all L-KC oomoldic limestones. Initial whole core data for the demonstration site from the Colliver #1 indicated high permeabilities and small core chips preserved along with cuttings indicated lower permeability. Core from the Carter-Colliver #1 CO2 I 'C' interval exhibit intermediate permeabilities. Two high-permeability routine whole core measurements exhibit anomalously low porosity due to the presence of sections of dense bioclastic limestone in the core.

Permeability decreases from the top of Layer 2 to the bottom of the LKC-C interval (figure). Lower k in Layers 1, 5 and 6 is due to increased dense bioclastic limestone content.

Average Initial Properties Measured for each Layer at the Colliver-Carter Lease Site
C1 8md 18.8%
C2 150md 25.8%
C3 40md 22.0%
C4 6md 19.4%
C5 2md 14.7%
C6 0.3md 12.0%
Though permeability is strongly influenced by porosity. L-KC oomoldic limestones exhibit the same strong control of pore throat diameter on k and fall on the same trend exhibited by many rocks.  

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Last updated December 2001