Nuclear magnetic resonance measurements in well logging...

Details Nuclear magnetic resonance measurements in well logging... Nuclear magnetic resonance measurements in well logging...

G - Physics

01

V

G01V 3/32 (2006.01) G01R 33/44 (2006.01) G01R 33/561 (2006.01)

Patent

CA 2306342

A pulsed NMR tool has a magnet arrangement that is used to generate a static magnetic field having a substantially uniform field strength in a region of the formation surrounding the borehole. An RF coil is used to produce pulsed RF fields substantially orthogonal to the static field in the region of examination. The nuclear spins in the formation align themselves along the externally applied static magnetic field. A pulsed RF field is applied to tip the spins into the transverse plane, resulting in a precession of the spins. The tipping pulse is followed by a series of refocusing pulses and the resulting series of pulse echoes is detected. The timing and duration of RF pulses are altered from conventional CPMG to maximize signal and minimize RF power consumption. An additional forced recovery pulse at the end of an echo train may be used to speed up the acquisition and/or provide a signal for cancelling the ringing artefact.

Affiliated with

Also associated with

Rating

Nuclear magnetic resonance measurements in well logging... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Nuclear magnetic resonance measurements in well logging..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nuclear magnetic resonance measurements in well logging... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1969455