Geophysical Near-surface Characterization for Static Corrections: Multi-physics Survey in Reggane Field, Algeria

We are presenting a new methodology for building near-surface static corrections models consisting on multi-physics measurements integration. The methodology was applied in two geological contexts: presence of a complex, multi-layered sandy overburden on Kahlouche area and important weathered zone fluctuations due to shallow complex geology on Reggane. Electric and electromagnetic methods were choosen to characterize near-surface geology and improve the existing up-holes velocity models. Seismic / resistivity cross-correlations provide detailed transit time maps fully integrable in the seismic static-corrections processing workflow.