Identification And Suppression of Multiple Reflections in Seismic Prospecting

Kozlov E.A.

ISBN 10: 9067640794 / ISBN 13: 9789067640794

Editore: Brill Academic Publishers, 1988

pp. 242. Codice articolo 3184883

Riassunto:

This monograph is concerned with the three main aspects of dealing with multiple reflections in seismic prospecting and aims to substantiate a set of new techniques for their more effective suppression.

To increase the accuracy of the Earth's physical parameter estimates (1-D, 2-D and 3-D cases) earlier time intervals for seismic records are used in combination with the subtraction of predicted materials from target intervals in the course of seismic data inversion.

The automated identification of multiple events on seismic records in the course of data interpretation is discussed with the aim of improving the reliability with which structural and stratigraphic traps can be located.

In order to increase the signal to noise ratio modern techniques for the suppression of multiples (on either 2-D or 3-D records) based on the difference between propagation velocities of multiple and primary waves in the course of data processing are considered.

The book provides a description of general concepts then focuses on the methodology of data processing and interpretation; including theory, computational algorithms, stability and noise-immunity considerations. Special attention is given to the practical implementation of the techniques proposed. Finally, using a large amount of both model and real data examples, the book illustrates how to improve the resultant seismic data by the use of developed multiple identification and suppression techniques in various geologic environments.

Contenuti: Preface Introduction CHAPTER 1. SUPPRESSION OF MULTIPLES AS A PARTIAL PROBLEM OF SEISMIC INVERSION Transformation of an impulsive seismogram into a sequence of reflection coefficients--predictive filtering of multiples (PFM), lossless one-dimensional medium Relations between PFM and some other single-channel filters for multiple suppression PFM for losses-including models; PFM for two-dimensional and three-dimensional models Correctness of PFM Noise immunity of PFM. Possibilities of statistical optimization and regularization Examples of PFM application CHAPTER 2. PREDICTION OF MULTIPLE EVENT PARAMETERS AND IDENTIFICATION OF RECORDED EVENTS Interpretational models based on relations between multiple and primary events Prediction of the multiple event parameters Recognition of the seismic nature of recorded events Examples of the multiple event parameter prediction CHAPTER 3. SUBTRACTION OF RECORDED MULTIPLES Suppression of multiples with adjustment to their parameters Wave package subtraction (WPS) Relations between adaptive techniques of multiple suppression CHAPTER 4. IMPLEMENTATION OF PREDICTION, IDENTIFICATION AND SUPPRESSION OF MULTIPLES Recommendations to seismic data gathering and processing Typical processing sequences using PFM, PPM and WPS Conclusion References

Dati bibliografici

Titolo: Identification And Suppression of Multiple ...
Casa editrice: Brill Academic Publishers
Data di pubblicazione: 1988
Legatura: Rilegato
Condizione: New