N-19 COMBINE EFFECTS OF FREQUENCY DEPENDENCE SAMPLE SIZE AND HETEROGENEITIES ON ACOUSTIC VELOCITY Summary - 1 - In reservoir characterization measurements are made at different scales. Data collected at one scale are used to calibrate measurements at other scales. In order to evaluate possible scale effects on velocity measurements systematic sets of acoustic experiments were applied to different size samples of rocks and synthetic materials. The two analyzed main aspects were the experimental limitations due to the decrease in sample size and the significance of measurement results in relation with the sample characteristics. The results pointed out are: • The


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