VSP Processing For Coal Reflections

Salman K Bubshait and Donald C. Lawton

ABSTRACT

Five VSP surveys were acquired in Alberta as part of a study of Mannville coals. The zero-offset VSP survey was processed using the VISTA software through to corridor stack and shows high reflection quality of P waves with no significant multiples in the data. Also, the three walkaway VSPs along different azimuths were processed through to the VSPCDP stage. A recommendation is suggested to have an overlap of a receiver in the borehole to minimize shot static errors. The walkaways displayed high reflection quality of both P and S waves that highlighted the Mannville coals. A slight improvement of the reflection of the coals is noticed in the SV waves over the P waves as offset increases.

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