Compact Steady-State Relative Permeameter

The Compact Steady-State Relative Permeameter (CT-RCA-ESRP) performs steady-state brine/oil relative permeability determinations on core plugs in a semi-automated bench unit. It is listed with the routine-scale relative permeability instruments, which give oil-water curves for waterflood and displacement studies without the full complexity of a special core analysis rig, and it suits teaching and routine laboratories.

How it works

The plug is loaded hydrostatically at a confining pressure of 1,000 psi and a pore pressure of 150 psi at ambient temperature. Brine and oil are injected together at set rates; when pressure drop and produced fractions are steady, the effective permeability to each phase is obtained at that saturation. Stepping the injection ratio through a series of values gives the steady-state relative permeability curves. Dual-phase injection rates and confining pressure are the controlled variables; the curves are the measured result.

The unit takes plugs of 1 in diameter, with 1.5 in as an option, and 1 in to 3 in length. Wetted parts are stainless steel. It requires nitrogen at 1,500 psi and 110 to 220 VAC, 50 or 60 Hz. The saturation measurement method and the number of rate steps are project-dependent.

What is included

• Bench unit with hydrostatic core holder, dual-phase injection and confining pressure control

Specify for your project

• Plug diameter, 1 in or 1.5 in, and length
• Brine and oil to be used and their compatibility with stainless steel wetted parts
• Injection rate range for each phase
• Nitrogen supply available at the installation site
• Supply voltage and frequency

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: 1,000 psi
• Pore pressure: 150 psi
• Temperature : ambient
• Core diameter: 1"- 1.5" (option)
• Core length: 1'' to 3''
• Loading type: Hydrostatic
• Wetted material: stainless steel
• Fluids:brine, oil
• N2 requirement: 1,500 psi
• Power: 110-220 VAC, 50 or 60 Hz