Frequency-variable solid-liquid decoupling viscoelastic fluid factor pre-stack seismic inversion method
The invention relates to the field of exploration geophysical seismic fluid identification, in particular to a frequency change solid-liquid decoupling viscoelastic fluid factor pre-stack seismic inversion method. The method comprises the following steps: step 1, carrying out equal-interval frequenc...
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| creator | YUAN HAIHAN WEI GUOHUA CHEN YUMAO SHENG WENBO GAI SHANSHAN QIAN ZHI LIU HAOJIE XIA JIAN ZHENG XIN ZHANG YUXIAO |
| description | The invention relates to the field of exploration geophysical seismic fluid identification, in particular to a frequency change solid-liquid decoupling viscoelastic fluid factor pre-stack seismic inversion method. The method comprises the following steps: step 1, carrying out equal-interval frequency division processing on seismic data; step 2, frequency-division elastic impedance inversion is carried out by using the frequency-division seismic data in the step 1; step 3, constructing a frequency change solid-liquid decoupling fluid factor inversion equation; 4, aiming at each pre-stack angle stack, carrying out frequency change solid-liquid decoupling fluid factor inversion equation coefficient inversion on the sampling points; and 5, carrying out frequency change solid-liquid decoupling fluid factor inversion. According to the method, on the basis of conventional solid-liquid decoupling fluid factor inversion, a reference frequency and crossover frequency calculation process is established, and the fluid fa |
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The method comprises the following steps: step 1, carrying out equal-interval frequency division processing on seismic data; step 2, frequency-division elastic impedance inversion is carried out by using the frequency-division seismic data in the step 1; step 3, constructing a frequency change solid-liquid decoupling fluid factor inversion equation; 4, aiming at each pre-stack angle stack, carrying out frequency change solid-liquid decoupling fluid factor inversion equation coefficient inversion on the sampling points; and 5, carrying out frequency change solid-liquid decoupling fluid factor inversion. 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The method comprises the following steps: step 1, carrying out equal-interval frequency division processing on seismic data; step 2, frequency-division elastic impedance inversion is carried out by using the frequency-division seismic data in the step 1; step 3, constructing a frequency change solid-liquid decoupling fluid factor inversion equation; 4, aiming at each pre-stack angle stack, carrying out frequency change solid-liquid decoupling fluid factor inversion equation coefficient inversion on the sampling points; and 5, carrying out frequency change solid-liquid decoupling fluid factor inversion. According to the method, on the basis of conventional solid-liquid decoupling fluid factor inversion, a reference frequency and crossover frequency calculation process is established, and the fluid fa</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | DETECTING MASSES OR OBJECTS GEOPHYSICS GRAVITATIONAL MEASUREMENTS MEASURING PHYSICS TESTING |
| title | Frequency-variable solid-liquid decoupling viscoelastic fluid factor pre-stack seismic inversion method |
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