The measure of geologic knowledge spans a tremendously wide geometric scale. In the vertical dimension alone the range is from microscopic clay particle morphology and pore throat geometry to basinal megatrends many kilometers thick. Of a more limited scope, and inherent to building synthetic seismograms, is the process of relating logging-tool resolution measurements to seismic wavelengths—a tens- of-centimeters to tens-of-meters problem. This upscaling can be achieved by Sequential Backus Averaging.

In oil and gas exploration, 1-D synthetic seismograms are routinely generated from well logs. These synthetics correlate or tie well-bore-derived rock-property measurements to seismic trace data (Figure 1)....

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