West Hackberry Tertiary Project. Technical progress report, October 1--December 31, 1996 Page: 3 of 11
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1.0 ABSTRACT
The West Hackberry Tertiary Project is a field test of the concept that air injection can be
combined with the Double Displacement Process to produce a tertiary recovery process
that is both low cost and economic at current oil prices. The Double Displacement
Process is the gas displacement of a water invaded oil column for the purpose of
recovering tertiary oil by gravity drainage. In reservoirs with pronounced bed dip such as
those found in West Hackberry and other Gulf Coast salt dome fields, reservoir
performance has shown that gravity drainage recoveries average 80% to 90% of the
original oil in place while waterdrive recoveries average 50% to 60% of the original oil in
place. The target for tertiary oil recovery in the Double Displacement Process is the
incremental oil between the 50% to 60% waterdrive recoveries and the 80% to 90%
gravity drainage recoveries.
In previous field tests, the Double Displacement Process has proven successful in
generating tertiary oil recovery. The use of air injection in this process combines the
benefits of air's low cost and universal accessibility with the potential for accelerated oil
recovery from the combustion process. If successful, this project will demonstrate that
utilizing air injection in the Double Displacement Process will result in an economically
viable tertiary process in reservoirs (such as Gulf Coast salt dome reservoirs) where other
tertiary processes are presently uneconomic.1
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Gillham, T.; Cerveny, B. & Turek, E. West Hackberry Tertiary Project. Technical progress report, October 1--December 31, 1996, report, January 14, 1997; United States. (https://digital.library.unt.edu/ark:/67531/metadc683529/m1/3/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.