CAPRI device:

The CAPRI device is a sophisticated system that has been developed to measure the capillary pressure and electrical characteristics of a core sample under reservoir conditions. This equipment enables the determination of significant parameters such as the formation resistivity factor (FRF), cementation exponent (m), resistivity index (RI), tortuosity factor (a), saturation exponent (n), and brine resistivity (Rw). These parameters are critical in assessing fluid saturation and hydrocarbon reserves. Additionally, capillary pressure curves obtained from this device are crucial for simulation studies in oil and gas recovery processes. The instrument comprises a high-pressure pump, a core holder equipped with hydrophobic and hydrophilic ceramics, a resistivity cell, an electrode pattern, and a data acquisition system.

The main features are:

  • Core Sample Diameter: 1.5″
  • Length: 1 to 3 inch
  • Maximum Temperature: up to 150 ?
  • Maximum Confining Pressure: 10,000 psi
  • Maximum Pore pressure: 7,000 psi
  • Injection Rate: 0.0001 to 2 cc/min
  • Power supply: 220VAC, 50Hz

Capillary Pressure Range: -10 to +10 bar (145 psi)