Stretch- Free Stacking Available to Purchase

I present a novel method (Canadian and U.S. patents pending) for computing a CMP stack directly from an NMO- uncorrected gather in a way that avoids NMO stretch. The method replaces NMO correction and stacking with a single- step inversion to zero offset. The results are usually higher frequency and noisiser than a normal stack, but may contain less noise and multiple if a more open mute is used.

On drawback to the method is that an NMO-corrected CMP gather is never formed, although it can be mimicked with a series of offset- limited stacks. The inability to produce a proper stretch- free NMO-corrected gather limits the method’s applicability.