Enhancing seismic frequency bandwidth using VSPs—a case study

A new method for restoring high frequencies within the seismic bandwidth has been applied to a producing field in southern Alberta. This method is different from the conventional methods practiced in the industry and utilizes the frequency decay experienced at different VSP depth levels.Once the frequency attenuation has been determined from downgoing VSP traces, the surface seismic data are compensated for that. The procedure is robust and yields better-defined stratigraphy leading to more confident interpretations.Wayne Nisku oil pool in the Wayne-Rosedale area is 15 km southwest of Drumheller in Alberta (Fig. 1). Click here to enlarge imageThe discovery well 4-24, drilled in 1993, sta...

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