KERNEANALYSE LABORATORIET
CORE ANALYSIS

Taking chemical samples

Experimental facilities include:

• Conventional core analysis
  Conventional core analysis is only offered as part of special and R & D projects. Core characterization includes spectral core gamma logging, bulk density and porosity logging and core photography. Conventional plug analysis includes sample cleaning (cold-flush or Soxhlet), and determination of porosity, grain density, fluid saturation and gas permeability.
• Electrical measurements
  Electrical measurements at room or overburden conditions to determine core conductivity and Archie parameters (resistivity index, formation factor, cementation and saturation exponents). Instrumentation includes electrical resistivity cells, computer controlled pumps and a digital LCZ meter; a conductivity meter is available for formation water resistivity measurement.
• Capillary measurements
  Capillary measurements using the porous plate technique. Drainage and imbibition curves can be obtained at room or reservoir temperature and overburden pressure, with samples mounted in single core holders. Capillary measurements may be combined with additional mercury (MICP) measurements.
• Overburden measurements
  Overburden measurements at room or reservoir temperatures to determine the effect of confining pressure on porosity, permeability and electrical properties.
• Flooding experiments at reservoir conditions
  Flooding experiments at reservoir conditions to determine effects on the petrophysical and mineralogical properties of the sample and/or effects on the pore fluid chemistry. Saturation effects are studied in 2 and 3-phase systems using water, oil and gas.
• Permeability measurements
  Specific and endpoint permeability measurements at a range of different conditions using different fluids. Permeability measurements are performed for a great variety of materials (chalk, sandstone, till, caprock, unconsolidated material, etc.)
• Wettability measurements
  Wettability measurements are performed at room conditions using Amott's test.
• Whole-core measurements
  A limited number of SCAL measurements can be carried out on sample sizes from 54 mm (rock mechanics standard size) to 104 mm diameter and max. length 300 mm for confining pressures to 35 MPa (5000 psi). Furthermore, for tests at overburden pressures up to 1 MPa (145 psi), a set-up for a sample size of 500 mm diameter is available. Unconventional sample geometries like prismatic and cubic samples can also be handled.
• X-ray CT measurements
  Sample screening and characterization by X-ray CT are offered for all rock samples and industrial porous materials.