Formation Evaluation System Instruments

The Formation Evaluation System Instruments warrants permeability variation studies on cylindrical core samples by exposing them to a wide range of test fluids. Fluids can be axially injected through the core in either direction or tangentially circulated across one of the flat end faces. This chemically impervious device handles all types of cleaning treatments as well as corrosive fluid injections at temperatures up to 300°F (150°C).

System operation is entirely computer controlled by an automation package that allows precise monitoring and flow path control. A Windows-based proprietary software enables the user to run automated test sequences for optimum versatility. Test data is graphically displayed and logged to the hard disk at specified time intervals.

Maximum confining pressure :

• 6,000 psi

Maximum pore pressure :

• 5,000 psi

Maximum working temperature :

• 150°C

Core diameter :

• 1" and 1.5" (other sizes upon request)

Core length :

• 1" to 12" (other sizes upon request)

Flow rate :

• up to 36 cc/min

Pumped fluids :

• 4

Displaced fluid :

• 1

Number of pressure taps :

• Up to 5 spaced 2 inches apart along the core (optional)

Wetted parts :

• Hastelloy, PEEK

Power supply :

• 220 VAC, 50 Hz

Air pressure requirement :

• 7 bar (100 psi)

• Drilling mud tests are performed under realistic field conditions by flowing fluids tangentially to the face of the core using a special leak-off core holder.
• Mud pump flow rate up to 3 l/min ensures an efficient shear rate to simulate real operating conditions.