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3 results about "Wave detection" patented technology

Full-band elastic wave dispersion attenuation analysis method for cross-shaped multi-scale flow pore medium

PendingCN111597763AEasy to implementMeasurable physical parametersDesign optimisation/simulationPermeability/surface area analysisSeabed sedimentWave detection
The invention relates to a full-band elastic wave dispersion attenuation analysis method for a cross-shaped multi-scale flow pore medium. The method comprises the following steps: 1, enabling an actual complex pore medium to be equivalent to a cross-shaped pore model; 2, calculating related elasticity and fluid parameters such as solid phase, flow phase and solid-flow coupling according to the full-band elastic wave propagation theory of the cross-shaped multi-scale flow pore medium; 3, solving a plane wave solution according to the full-band elastic wave propagation wave equation of the cross-shaped multi-scale flow pore medium, and generating phase velocities and quality factors of longitudinal waves and transverse waves; and 4, generating a relationship among the elastic wave speed, attenuation and frequency according to the phase speed of the elastic wave and the quality factor. The method can be used for analyzing the change rule of elastic wave frequency dispersion and attenuation in the multiphase pore medium along with frequency, porosity, permeability and the like, and serves for oil and gas reservoir detection and seabed sediment elastic wave detection.
Owner:EAST CHINA UNIV OF TECH
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