Skip to Main Content
Book Chapter

Chapter 11: Measurement and Identification of 3-D Coherent Noise Generated from Irregular Surface Carbonates

Carl J. Regone
Carl J. Regone
Amoco EPTG, Tulsa, Oklahoma, U.S.A.
Search for other works by this author on:
January 01, 1997


One of the primary causes of poor seismic data quality is the masking of desired reflection signals by seismic waves scattered from topography or near-surface heterogeneities. For successful seismic acquisition and processing, one must be able to identify this scattered noise and quantify its strength relative to the desired signal so that appropriate measures can be taken to suppress it. An economical procedure has been developed that allows analysis of scattered noise. A field test consisting of a series of shots into a 3-D grid of receivers, whose dimensions depend on the range of noise velocities to be analyzed and the choice of temporal frequencies over which to make the analysis, makes it possible to identify events by measuring the direction and magnitude of their horizontal velocity. This 3-D grid also allows the formation of a series of nested areal arrays with graduated attenuation levels that can be used to quantify the signal-to-noise ratio by attenuating the scattered noise by known amounts and observing the level at which desired signal appears. For any given shot, the seismic traces recorded by the grid can be analyzed and a graphic workstation can be used to produce radar-like displays of seismic events showing their arrival time, horizontal velocity, azimuth, temporal frequency bandwidth, and amplitude. With this information, one can design field arrays of the appropriate size and attenuation level to suppress the scattered noise. Often the required arrays are so large that they must be recorded in segments to prevent loss of desired signal due to necessary static and cross-line dip corrections. This array approach is most suitable for 2-D and wide-line profile acquisition schemes. Noise suppression levels of 20–30 dB have often been achieved, which has successfully revealed signal in many areas, such as Edwards Plateau in West Texas, karstic limestone regions of the former Yugoslavia, and Black Warrior Basin of Mississippi.

You do not currently have access to this article.
Don't already have an account? Register

Figures & Tables


Geophysical Developments Series

Carbonate Seismology

Ibrahim Palaz
Ibrahim Palaz
Search for other works by this author on:
Kurt J. Marfurt
Kurt J. Marfurt
Search for other works by this author on:
Society of Exploration Geophysicists
ISBN electronic:
Publication date:
January 01, 1997




A comprehensive resource of eBooks for researchers in the Earth Sciences

This Feature Is Available To Subscribers Only

Sign In or Create an Account

This PDF is available to Subscribers Only

View Article Abstract & Purchase Options

For full access to this pdf, sign in to an existing account, or purchase an annual subscription.

Subscribe Now