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Formation Damage Evaluation and Simulation is designed to measure the effect on
the permeability of reservoir rock samples from various drilling and completion
fluids at reservoir pressure and temperature. Core samples are placed in a thick
walled Viton sleeve with end-plugs designed to facilitate the introduction of completion
acid mixes and to allow insertion of ring spacers for accumulation of filter cake
at the upstream end of the sample. Simulated overburden pressure is applied to the
sample with a computer controlled syringe pump and differential pressure array to
ensure that the correct net confining pressure is maintained as injection pressure
increases. Free-piston fluid accumulators are provided to accommodate the fluids
required for flow tests. Data acquisition hardware and software logs system parameters
including flow rates, pressures, differential pressure, temperatures, overburden
pressure and cumulative flow volumes. Normal operating conditions for the system
are 10,000 psig confining pressure, 7,500 psig pore pressure and 300 °F temperature.
NOTE: All wetted parts are of Hastelloy C-276, Viton, Teflon, and PEEK. As required
other materials can be quoted upon request.
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