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Petrophysics Laboratory System is designed for multiple 4 core holder racks with
integrated valves, hydraulic lines, back-pressure regulators, pressure gauges and
hand operated hydraulic pump. A mobile trolley carries a syringe pump, pressure
transducer array, back pressure regulator, accumulator, air driven venturii vacuum
pump and low pressure air driven, Teflon, brine pump that can connect to individual
cells for sample loading and preparation for resistivity and capillary pressure
work. The syringe pump allows liquid permeabilities and room condition unsteady-state
relative permeabilities using either brine or laboratory oil to be performed in
addition to the basic resistivity and capillary pressure experiments.
In its basic configuration the system allows for the large through put of air/brine
capillary pressure tests with the ability to measure sample resistivity in conjunction
with the test. 2 or 4 electrode measurements can be carried out depending on whether
a sleeve is used with or without embedded silver electrodes. The inclusion of the
mobile cart further extends the capability of the system by allowing individual
cells to be connected to the pump, transducer array and back pressure system to
facilitate liquid permeability, ambient conditions unsteady-state relative permeabilities
and if used in conjunction with the ceramic plates oil/water capillary pressure
Core Holder: features four or two electrodes, hydrostatic loading
with Hastelloy wetted parts and Torlon inserts for electrical isolation. Rotating
mounting allows measurements to be carried out horizontally or vertically. Includes
end pieces and stems for 1-inch, 30 mm or 1½-inch samples up to 3 inches in length.
Electrodes are mounted at 1-inch distance inside the Viton sleeve for the 4-electrode
In conjunction with a suitable semi-permeable ceramic disk the RCCH core holder
can be used for steady-state porous-plate capillary pressure measurements thus allowing
resistivity determinations to be made at known water saturations. As the disk is
sealed against the Viton sleeve any type of ceramic disk can be used in this core
holder. Saturation changes are measured gravimetrically using centrifuge tube collection
vials. Working Pressure: 10,000 psi. Temperature rating: 300 °F. Wetted material:
Hastelloy, Seals/Sleeves: Viton.
Core Racks constructed of modular, extruded aluminium framework
the racks hold up to 10 core holder integrated valves and plumbing, back-pressure
regulators, gauges and transducers. Each rack also includes a hand hydraulic pump
for application of overburden pressure on the core holders.
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