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

Kansas Geological Survey
Open-file Report 2001-38

Reservoir Geology

Very sketchy geologic data was available prior to the drilling of the #CO2 I-1 well, a future CO2 injection well. In this well a total of four cores were taken. The first was a conventional full diameter core of the L-KC “B” zone and the top 3 feet of the “C” zone to 2894 feet. The two subsequent cores were 10 foot, slim (2” diameter) pressure cores from 2894-2904 feet and 2904-2914 feet. Pressure cores were taken with the intent of capturing all of the fluids that might otherwise escape into the mud system. The fourth core covered the upper part of the L-KC “G” zone. Convention Core
2985-2993.2' (Natural Light)
Pressure Core
2894-2904' (Ultra Violet Light)
Pressure Core
2894-2904' (Natural Light)
Pressure Core
2904-2914' (Ultra Violet Light)
Pressure Core
2904-2914' (Natural Light)

Core "Remains" 2895'. The photo above is typical of the recovery from 2894-2902. Due to the extremely high porosity and lack of consolidation by cement in the interval from 2894 to 2902, practically all of the core was fragmented when it came out of the core barrel yielding wafers of the more well cemented intervals and dust. Petrophysical properties could only be measured where samples were of adequate size, the better cemented intervals.

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Last updated December 2001