AI Residual Moveout (RMO)

Residual Moveout (RMO) refers to the remaining misalignment of seismic reflection events across different offsets or angles after the initial Normal Moveout (NMO) correction or depth migration has been applied. This misalignment indicates that the current velocity model is not fully accurate and needs further refinement.

RMO analysis is used to detect and quantify these discrepancies by examining how reflection events vary across seismic gathers, such as Common Midpoint (CMP) or Common Reflection Point (CRP) gathers. By analyzing the residual moveout, geoscientists can adjust the velocity model to better align the seismic events, thereby improving the accuracy of the subsurface image.

Correcting for RMO is a critical step in seismic data processing, particularly in complex geological environments where initial velocity models might not account for all variations. Proper RMO correction leads to more accurate seismic imaging, better depth conversion, and improved interpretation of subsurface structures.