Intersection determination method of sensitive reference frequency in AVO frequency dispersion parameter inversion depending on frequency
A technology of parameter inversion and reference frequency, which is used in seismology and seismic signal processing for logging records. It can solve the problems of easy distortion, unfavorable reference frequency, limited accuracy and reliability, etc. The effect of high efficiency and improved reliability
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[0030]The specific implementation of the present invention is as follows: (1) import the pre-stack angle gathers of all known wells in the work area, and the target intervals and positions of each well logging interpretation, and the fluid type data of the target intervals; (2) in the seismic effective frequency band Within the range, use all the frequency components of the prestack angle gather beside the well to perform frequency-dependent AVO P-s wave dispersion attribute parameter inversion in the target reservoir interval; (3) The P-s wave dispersion attribute corresponding to each frequency component Parameters, according to the fluid type interpreted by logging, use different symbols or colors to project on the frequency-dispersion attribute intersection plane; (4) conduct intersection analysis on the frequency-dispersion attribute intersection plane, search and pick up The frequency corresponding to the value and the corresponding frequency or frequency band when the di...
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