Electricity: measuring and testing – Particle precession resonance – Using well logging device
Reexamination Certificate
2005-02-01
2005-02-01
Arana, Louis (Department: 2859)
Electricity: measuring and testing
Particle precession resonance
Using well logging device
C324S306000
Reexamination Certificate
active
06850060
ABSTRACT:
In one embodiment of the present invention, a method of measuring the molecular displacement of a fluid is disclosed comprising: (a) applying a strong magnetic field gradient to the fluid; (b) applying a sequence of oscillating magnetic field pulses to the fluid wherein the sequence includes a first portion followed by a second portion, wherein the first portion spatially modulates the magnetization state of the fluid and the second portion monitors the evolution of the modulation; (c) detecting magnetic resonance signals from the fluid; and (d) analyzing the detected signals to determine the molecular displacement of the fluid. This method may be used to determine the diffusion of the fluid or the restricted diffusion of the fluid through the porous media if the fluid is within a porous media (such as earth formation, bone, wood or other material). Also disclosed is a logging tool configured to implement this methodology.
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Flaum Charles
Hürlimann Martin D.
Song Yi-Qiao
Arana Louis
Batzer William B.
DeStefanis Jody Lynn
Ryberg John J.
Schlumberger Technology Corporation
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