The interpretation of tracer experiments in interwell communications is much more complex than those obtained in industrial devices because oilfields and geothermal fields are non-boundary systems and little information about their internal structure is available; the curves are often incomplete, operating parameters change during the experiment and, finally, the percentage of tracer recovery is very low. In order to simplify the approach, an intercomparison of the software packages has been made on the experimental data obtained previously on a laboratory scale.

To achieve this purpose, the results from tracer experiments carried out in a laboratory model in the Commissariat a l’Energie Atomique in Grenoble, France, were used. To obtain the simulated tracer records the following conditions were considered:

• Water saturation (Sw = 1);

• Total layer thickness watered (h = 0.8 m);

• Reported porosity (0.35);

• Nominal water flow rates (injector: 107 mL/min, producers: 26.8 mL/min);

• Tracer recovery of 81.06% (in agreement with the reported values);

• No faults;

• No anisotropy;

• Dispersivity (estimated).