Title: Carbonate reservoir porosity ultrasonic evaluation by numerical simulation
Abstract: Porosity is basic parameter for reservoir evaluation and production capacity forecast.In this paper,the ideal core and digital image processing of the actual rock sample image is the establishment of digital core.Calculated on the basis of the numerical simulation of two-dimensional acoustic.To carry out the the vug reservoir porosity prediction research.Studies have shown that:wyllie average time formula is not completely unsuitable in vug carbonate formation.Jointly controlled by the pore size and pore density.When the hole density of 0.08~0.064 measured porosity-wave velocity relationship to deviate from wyllie theory calculated.The actual porosity-wave velocity of the relationship the approach wyllie calculated when the hole density greater than 0.096.Given porosity,pore density-the quality factor was Q~(-1)=aln(ρ)+b logarithmic law changes.Given porosity,porosity-the quality factor was φ=aQ~(-1) + b logarithmic law changes.The coefficients of the prediction model are directly affected by the influence of the pore density,the greater pore density the greater the b value.
Publication Year: 2015
Publication Date: 2015-01-01
Language: en
Type: article
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Cited By Count: 1
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