| Velocity | ||||
| SeisUP has a complete line of velocity analysis modules. Interactive NMO Analysis (GEOVEL) is an interactive program that will pick RMS velocity curves and optionally a fourth order term (non-hyperbolic moveout). Depending upon the velocity analysis options that created the GEOVEL input data set, the following windows may be created: semblance, common offset stack over the analysis location, constant or variable velocity stacks. A unique feature available in GEOVEL is the ability to display the NMO or residual curve over the CMP gather as the cursor is moved over the velocity stacks or the semblance section. Normal Moveout Removal (NMOR) executes normal moveout removal as defined by an RMS velocity field contained in a user-specified matrix. Optionally, a non-hyperbolic moveout can be applied. A stretch mute can also be applied to the data to mute distortions due to excessive stretching of the data. A mute taper can optionally be applied to avoid edge artifacts produced in any frequency domain processing due to abrupt start of data at the mute. Velocity interpolation (VIP) will create a velocity cube that can be optionally used by normal moveout or various migration algorithms. Options include the ability to do smoothing, time or depth output, velocity type to output, and perform a Dix interpolation if interpreted horizons are available. |
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Fourth Order Velocity Analysis
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