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Apparatus and method for direct analysis of formation composition by magnetic resonance wireline logging
Apparatus and method for direct analysis of formation composition by magnetic resonance wireline logging
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机译:通过磁共振有线测井直接分析形成组合物的装置和方法
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摘要
A wireline or logging while drilling device includes: a first coil configured to vary the intensity of a main magnetic field so as to produce phase modulation of signals emitted by spins in a sensitive volume; and a second coil configured to excite the spins in the sensitive volume in an inverse ratio of gyromagnetic constants of the spins; and receive signals from the spins displaced in frequency from the Larmor frequency of the spins by the phase modulation produced by the first coil.
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