AUTOMATIC FIRST-BREAKS PICKING USING LINEAR MOVEOUT CORRECTION AND COMPLEX SEISMIC TRACES

Automatic dip - picking by non - linear optimizationLin

We have developed a new automatic dip-picking method that is superior to the dip-scan method in several aspects. In our method, we estimate the dip of an event through the relative time-shift between neighboring traces. The optimal time-shift is deened to be the minimizer of a non-quadratic objective function that measures the discrepancies between the neighboring traces after these traces are ...

Semi-automatic Picking of First Arrivals through Cross Correlation Using Spline Interpolation Applied to Near-surface Seismic Surveys

Cross-correlation between adjacent seismic traces is one of several ways to estimate the time shift between first arrivals on seismograms. The accuracy of this method is limited to the sampling interval of the recorded seismic energy and the signal-to-noise ratio and uniformity of the seismic wavelet. For situations where the sampling interval is large interpolation between samples can be used ...

Automatic Horizon Picking in 3D Seismic Data Using Optical Filters and Minimum Spanning Tree (Patent Pending)

Horizon picking in 3D seismic data is a very challenging problem. The difficulty for automatic horizon extraction exists at least in two fold: (1) the selection of picks in a trace usually ignores lateral continuity, and (2) the trace traversal order can result in significantly different horizons so that the resulting picks in the same horizon often conflict with each other. In this paper, a pa...

Automatic Linear Correction 3

Estimation of anisotropy parameters in application to Blackfoot seismic data

Anisotropy parameters are obtained by anisotropic velocity analysis performed on Blackfoot P-wave reflection-seismic data, in combination with sonic-log data. First, the line was processed with ProMAX seismic data-processing software using a sequence of conventional algorithms without taking anisotropy into account, in order to choose proper analysis points and horizons with confidence. Then, a...