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THREE-DIMENSIONAL NUCLEAR MAGNETIC RESONANCE LOGGING INSTRUMENT PROBE, LOGGING INSTRUMENT AND ANTENNA EXCITATION METHOD
THREE-DIMENSIONAL NUCLEAR MAGNETIC RESONANCE LOGGING INSTRUMENT PROBE, LOGGING INSTRUMENT AND ANTENNA EXCITATION METHOD
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机译:三维核磁共振测井仪探头,测井仪及天线激励方法
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摘要
The present invention provides a three-dimensional nuclear magnetic resonance logging instrument probe, a logging instrument and an antenna excitation method, where the probe includes: a probe framework, a magnet and an antenna; four magnets are uniformly distributed along a circumference of the probe framework, the magnets are magnetized in a radial direction of the probe framework, two magnets placed opposite to each other are magnetized from outside to inside, and the other two magnets placed opposite to each other are magnetized from inside to outside; in the probe framework, each of the magnets is provided with independently fed antennas; antennas corresponding to each of the magnets comprise a left antenna provided on one side of the corresponding magnet and a right antenna provided on the other side of the corresponding magnet; the left antenna and the right antenna corresponding to each magnet are electrically connected.
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