Method of enhancing common depth point seismic data

Details Method of enhancing common depth point seismic data Method of enhancing common depth point seismic data

1972-11-10

1980-05-13

Birmiel, Howard A.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

367 43, 367 63, 364421, G01V 136

Patent

active

042031613

ABSTRACT:
A method of enhancing a "gather" formed of a plurality of unmoved out common depth point (CDP) data traces. The gather is formed of a plurality of seismic traces arranged in a display in which time varies along the horizontal axis and distance between source and detector (range) varies along the vertical axis. The gather is incrementally processed by cross correlating trace segments within a defined area or search window. To this end, the center trace within the window is selected as a reference trace which is multiplied by a taper function and cross correlated with the other traces in the window to provide a coherent trace and a separate noise trace, both of which are produced in the output. The window is shifted on the gather and the procedure is repeated until every trace has been processed. In the cross correlation technique, the trace segments in the window are examined along a derived hyperbolic curve. To this end, the traces are time shifted to the positions producing optimum alignment with the reference trace along the hyperbolic curve and are then summed with the reference trace segment along the curve and averaged. The resultant coherent trace is multiplied by a taper function and reproduced in the output in time alignment with the reference trace. A separate noise trace is also obtained by subtracting the coherent trace from the reference trace. The cross correlation proceeds through the entire gather at half window increments until a new gather is formed. Also disclosed is a method for deriving the hyperbolic curves connecting common events at the center of each window.

REFERENCES:
patent: 3496531 (1970-02-01), Sullivan et al.
patent: 3550074 (1970-12-01), Kerns et al.
patent: 3622966 (1971-11-01), George, Jr.
patent: 3638177 (1972-01-01), Lindblade
patent: 3696331 (1972-10-01), Gunzy et al.
patent: 3714621 (1973-01-01), Waters

Affiliated with

Also associated with

Rating

Method of enhancing common depth point seismic data does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of enhancing common depth point seismic data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of enhancing common depth point seismic data will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-932995