CPEP Technical Pole
Location
La Bouloie - Propédeutique Building - Building wing M - Floor -1 (-127M/-129M)
Access
Restricted to student and staff qualified in petrophysics expermental technics
Brief summary of the activity
This laboratory applies analytical methods in order to determine the petrophysical characteristics of natural or synthetic geomaterials (concrete, ceramic), especially to characterize their pore structures and to quantify their fluid transport properties.
The analyzes or preparations
- Total porosity (Nt), bulk density and solid density measurement using Archimedes’ method
- ‘Free porosity’ or porosity accessible by capillarity after 48 h (N48) and Hirschwald saturation coefficient (S48) measurement
- Estimation of capillary pressures and pore throats spectrum by mercury injection porosimetry
- Gas permeability measurement on plugs using a steady state permeameter (Klinkenberg correction)
- P-waves velocity measurement on plugs (dry or saturated with brines)
- Electrical conductivity measurement on plugs saturated with brines, formation factor and tortuosity estimation of geomaterial pore network
- Capillary imbibition kinetics measurement in geomaterials
- Drying kinetics measurement of geomaterial under controlled air moisture
- Water-vapor adsorption kinetics and isotherms in geomaterials
- Rock specimen impregnation with colored epoxy in order to observe pore structure in thin section under optical microscope: total impregnation under vacuum and then pressure (monophasic conditions); selective impregnation under atmospheric pressure (diphasic conditions) to distinct free porosity from trapped porosity.
List of devices
| Equipments and apparatus | Aims | Linked equipment |
|---|---|---|
| Mercury Porosimeter Micromeritics AutoPore IV, 200 MPa. | Capillary pressures estimation and pore throat diameters measurement | Penetometers & Precision balance |
| Steady state gaz permeameter | Permeability measurement of rock and derivative materials | Nitrogen pressure tank |
| Measuring device for P-sound wave velocities on plugs (Pundit) | P-sound wave velocities measurements of rock and derivative materials | Oscilloscope |
| Device for saturate geomaterial with water | Total porosity measurement/ P-sound wave velocity measurement on saturated sample | Vacuum pumps |
| Low temperature thermo controlled | Construction of water-vapour adsorption isotherm curves for rock samples | |
| Device for capillary rise kinetics measurement | Capillary rise kinetics measurement | Precision balance /PC |
| Device for drying kinetics measurement | Measurement of water evaporation in rock samples under controlled relative humidity | Precision balance /PC |
| Device for injection of coloured epoxy resin into rock samples | Production of thin section for geomaterial porous network study | Oven for drying samples and harden epoxy resin, vacuum pump, thermal mixer, thin section lab |
| Ohaus Explorer precision balance, max. 210 g +- 0,1 mg | Hg porosimetry test samples preparation / physical adsorption | |
| Measuring device of electrical conductivity | Factor formation and tortuosity estimation of porous networks of geomaterials | |
| Ohaus Explorer precision balance max. 630 g +- 0,01 g | Hg porosimetry, drying kinetics | |
| Ohaus Explorer precision balance max 4 kg +- 0,01 g | Water porosimetry, capillary rise kinetics | |
| Double cutting disc rock saw | Brot 1 02 02 2 D | Shaping of petrophysical test plugs |
| Jouan oven | Sample drying | |
| Oven (MEMMERT UN30) | Epoxy resin hardening | |
| Mini rock saw Presi P100 | Hg porosimetry test samples preparation | |
| SDMO 3KW generator | Electric power for sampling tools on the field | |
| Core drill machine (Stihl-Golz FB100) | Core drilling and sampling on the field | Various core drill tools of different diameters and qualities depending on rock hardness |
Petrophysics: from field to microprobe analysis
