Nuclear magnetic resonance T2 cut-off value calculation method based on longitudinal wave constraint
A technology of nuclear magnetic resonance and calculation methods, which is applied in the direction of analysis by nuclear magnetic resonance, material analysis through resonance, and measuring devices, can solve problems such as error transmission, and achieve the effects of speeding up the progress of experiments, solving error transmission, and facilitating applications
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[0031] The invention relates to a nuclear magnetic resonance T based on longitudinal wave confinement 2 cut-off value calculation method, such as figure 1 As shown, including pretreatments such as core cutting, grinding and drying, the NMR T in the saturated state of the core 2 Spectrum and P-wave velocity measurement, nuclear magnetic resonance T under the centrifuged state of the core 2 Spectroscopy, NMR T 2 Cutoff value influencing factors analysis and modeling steps.
[0032] The present invention will be further described below in conjunction with accompanying drawing:
[0033] A NMR T based on longitudinal wave confinement 2 The calculation method of the cut-off value comprises the following steps:
[0034] a. Carry out pretreatments such as cutting and grinding on the sample obtained at the well site, and obtain a cylindrical core with a length of 3-5 cm and a diameter of 2.54 cm; put the core into a constant temperature box and dry it for 48 hours. Set to 100 deg...
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