Determining Velocity and Time Analysis in NMO using Low and High VNMO Methods

Dec 25, 2025

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This article explores the methodology for determining velocity (VNMO) and time (T) in normal moveout (NMO) analysis. It discusses the application of low VNMO before NMO and high VNMO after implementing NMO corrections. The formula DTNMO ≈ X² / (2T₀ VNMO²) is derived and explained, showcasing how differences in time (TNMO) are calculated based on the true velocity (Vtrue) and the high VNMO adjustments. Insights into the significance of accurate velocity determination in seismic data interpretation are provided.

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Determining Velocity and Time Analysis in NMO using Low and High VNMO Methods

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