Inventors:
William L. Walters - Houston TX
Assignee:
Shell Oil Company - Houston TX
International Classification:
G01V 130
Abstract:
A method to adjust a common subsurface feature on seismic traces associated with line misties is provided so that the seismic traces are consistent about the common subsurface feature. The method uses traces which are uniquely located in an x-y coordinate system to reflect the actual location of the traces with respect to an intersection. In this method traces can be associated with a line of seismic data or can be isolated traces such as well-log synthetics or vertical seismic profiles. The traces make up sets of data. An intersection is selected and representative traces from two sets of data are initially selected and form trace pairs. A time gate is determined about a common subsurface features of interest on the representative traces. The time gate isolates a trace gate about the common subsurface feature on each trace leaving only the trace gates in the trace pairs. A time delay is determined for each trace pair.