Method of performing stretch-free normal movement(nmo) and...

Details Method of performing stretch-free normal movement(nmo) and... Method of performing stretch-free normal movement(nmo) and...

G - Physics

01

V

G01V 1/36 (2006.01)

Patent

CA 2427268

A method of performing normal moveout (NMO) correction and stacking of a common-midpoint (CMP) gather of seismic traces in a manner that avoids NMO stretch is disclosed. A CMP gather without NMO correction is modeled as the sum of a series of short overlapping time intervals whose center times follow the NMO curve as it changes with offset. The sample values contained in these intervals axe solved simultaneously by performing a statistical fit to the CMP gather based on this model. A CMP stacked trace is formed by summing these intervals at their zero-offset positions at each time sample.

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