Benchtop Unsteady-State Relative Permeameter

The Benchtop Unsteady-State Relative Permeameter (model CT-RCA-BURP) determines absolute permeability and two-phase liquid relative permeabilities on core plugs by the unsteady-state method. The plug is held in a hydrostatic core holder rated to 350 bar (5,000 psi) confining pressure and 350 bar (5,000 psi) pore pressure, at ambient temperature. It belongs to the routine core analysis range, which gives oil-water and gas-oil relative permeability curves on standard plugs for waterflood and displacement studies without a full special core analysis rig.

How it works

A plug of 1 in or 1.5 in diameter and 1 in to 3 in length is loaded in the hydrostatic holder and brought to the confining pressure representative of the reservoir. Absolute permeability is measured first by injecting a single liquid at a controlled rate. For the relative permeability test the plug, saturated with one phase, is flooded by the second phase at a set injection rate. The displacement is followed with the instrumentation configured for the project, and the relative permeability curves are derived from that record.

Controlled variables are confining pressure and injection rate. Measured outputs are absolute permeability and the relative permeability curves. Wetted parts are stainless steel. Nitrogen supply is 2,000 psi and the unit runs on 110 to 220 VAC, 50 or 60 Hz. Sample size, pressure and temperature ratings, wetted materials and instrumentation are configured per project.

What is included

• Hydrostatic core holder for 1 in or 1.5 in plugs, 1 in to 3 in long
• Confining and pore pressure system to 350 bar (5,000 psi)
• Stainless steel wetted flow path

Specify for your project

• Plug diameter and length
• Fluid pair (oil-water or gas-oil) and test sequence
• Confining and pore pressure required
• Test temperature if other than ambient
• Instrumentation and data acquisition
• Site power and nitrogen supply

This description defines the product family. Guaranteed performance, included hardware, exclusions, interfaces and acceptance criteria are stated only in the project-specific technical proposal and approved datasheet.

Features

• Confining pressure: 350 bar (5,000psi)
• Pore pressure: 350 bar (5,000psi)
• Temperature : ambient
• Core diameter: 1" or 1''1/2
• Core length: 1'' to 3''
• Loading type: Hydrostatic
• Wetted material: stainless steel
• N2: 2,000 psi
• Power: 110-220 VAC, 50 or 60 Hz