![]() When the wedge is a quarter-wavelength (1/4) thick, the second half-cycle of the reflection from the top interferes constructively with the first half-cycle from the bottom, resulting in an increase in amplitude. The tuning effect illustrated for a wedge the material above and below it is the same, but the wedge has different acoustic impedance. 2 Slide 3 3 Tuning makes two reflected signals appear as either one signal or even as no signal, this thickness therefore represents the minimum bed resolution that the wavelet can identify. This process requires a well, a wavelet, and a zone for creating the wedge. In this document describes the process of creating a wedge model and viewing the tuning analysis chart. Changes in bed thickness are introduced into the model along with changes in acoustic properties determined through rock physics modeling. Wedge Modeling is used to understand vertical (thin bed) resolution limited by seismic. It creates seismograms but lets you alter a petro-physical or fluid parameter to see the predicted changes. Wedge Modeling HRS-9 Hampson-Russell Software Gregg Schleider HRS-9 Houston TX 2012 Slide 2 Wedge Modeling is part of the AVO modeling suite of tools.
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