Patent ID: 6833698
Filing Date: 2004-12-21
Classification: G01N,G01R,G01V

Abstract:
A method for analyzing the properties of a porous medium containing fluids, the method comprising the steps of:applying a static magnetic field B0 to a porous medium containing fluids in pore spaces to polarize spine of protons in the porous medium and fluids and create an overall magnetization; applying a series of differentiated pulse sequences including a combination of radio frequency (RF) and gradient pulses to the porous medium and fluids contained therein in the presence of the static magnetic field B0 the pulse sequences having a preparation part followed by a first window and a second window, wherein the portion of the pulse sequence in the first window of at least one pulse sequence is differentiated by at least one differentiating variable vd from the portion of the pulse sequence in the first window of another of the pulse sequences; acquiring induced resonance signals in the form of spin echoes from the porous medium and fluids contained therein during the second windows of the pulse sequences; and processing the acquired induced resonance signals to determine properties of the porous medium and fluids contained therein.