Geology & Geoscience

MDA meaning in oil and gas

Definition

Multiple Diffraction Attenuation

MDA means Multiple Diffraction Attenuation. Multiples of diffractions are common in areas with deep water and complex thin sub-water bottom geology (e.g. West Africa, Norwegian Sea). The PGS multiple diffraction…

Multiples of diffractions are common in areas with deep water and complex thin sub-water bottom geology (e.g. West Africa, Norwegian Sea). The PGS multiple diffraction attenuation (MDA) process uses a frequency dependent pattern recognition technique to isolate the complex multiple diffractions which contaminate the deeper data. MDA is generally used on pre-stack data. See

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