Facilities

High Pressure/High Temperature Multiphase CO₂ Flow Rig
University of Edinburgh
School of GeoSciences
Katriona Edlmann
+44 (0)131 650 7339

The high pressure / high temperature CO₂ flow rig at Edinburgh University has been designed and built in-house. It is a unique apparatus that can recreate in-situ reservoir conditions with multi-phase flow of CO₂ /brine through rock to provide complete parameterisation of the coupled thermo - hydro - mechanical and chemical mechanisms for the CO₂ / brine / rock mineral system. The equipment consists of a Hassler-type high pressure cell which holds cylindrical rock samples of 38mm diameter and up to 75mm in length. The pump is designed for high temperature, pressure and supercritical CO₂ and all wetting parts are in 316 stainless steel or PEEK to limit corrosion.The experimental equipment is rated to provide:

  • Up to 10000psi (689 MPa) pressure.
  • Up to 90°C fluid and rock temperature.
  • Supercritical CO₂ and brine fluid flow (both single and multi-phase).
  • Sample upstream and downstream pressure along with the differential pressure.
  • Scope to add tracers (or other markers).
  • Take up and downstream fluid samples for detailed chemical analysis using a suite of analysis techniques including; continuous flow analysis, coulometry, atomic absorption spectrophotometry and C/H/N analysis.
  • Obtain rock samples pre and post in-situ CO₂ flow for detailed petrophysical analysis using a suite of analysis techniques including; SEM, XRD, X-Ray C, XRF and the ion microscope.
  • High pressure and high temperature operation, recreating in-situ reservoir conditions
  • Supercritical, liquid and gas phase CO₂ and brine single or multi-phase flow
  • Takes large core samples: 38mm diameter 100mm length
  • EU large scale integrating project - A Multiple Space and Time scale Approach for the quantification of deep saline formations for CO₂ storaGe (MUSTANG)
  • EU large scale integrating project - Predicting and monitoring the long term behavior of CO₂ injected in deep geological formations (PANACEA)

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