Patent Document ID: 20100121580
Application ID: 12466460
Patent Flag: 0

Claim One:
1. Method of estimating physical parameters of a geological formation, comprising the following steps: equipping a well passing through the geological formation with a tube open at its bottom end; filling the tube and a bottom part of an annular space situated around the tube in the well with a first fluid; filling the rest of the annular space with at least one second fluid so that the fluids exhibit an interface in the annular space; disturbing a hydraulic balance of the fluids in the well; measuring the trend of quantities relating to properties of the fluids in the well; performing computer simulations of the hydraulic behaviour of the fluids having a disturbed balance in the well, each simulation using a set of values for said physical parameters of the geological formation and giving rise to a simulated trend of said quantities; and comparing the measured and simulated trends of said quantities to identify an optimum set of values for said physical parameters of the geological formation.