DIP MOVEOUT CORRECTION BY FOURIER TRANSFORM IN CONSTANT AND VERTICALLY-VARYING VELOCITY MEDIA

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

GOLALZADEH A.; JAVAHERIAN A.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Journal of the Earth and Space Physics Year:2002 | Volume:28 | Issue:2 Page(s): 23-34

Download Full-Text

Persian Verion

View:

899

Download:

Cites:

Information Journal Paper

Title

DIP MOVEOUT CORRECTION BY FOURIER TRANSFORM IN CONSTANT AND VERTICALLY-VARYING VELOCITY MEDIA

Author(s)

GOLALZADEH A. | JAVAHERIAN A. | Issue Writer Certificate

Keywords

DIP MOVEOUTQ4

FOURIER TRANSFORMQ4

NORMAL MOVEOUTQ3

STACKING VELOCITIESQ3

OFFSETQ4

Abstract

During last few decades, the acquisition of seismic reflection data was performed using the common mid point method. In order to remove the effect of OFFSET between sources and receivers from reflection times, NORMAL MOVEOUT Correction is applied. This operator does not perform well on non-horizontal reflectors. Also, the CMP stacking process acts as a dip filter, tending to enhance reflections having a particular slope in the stack, while more or less attenuating reflections having different slopes. Therefore, additional processing steps are required in the usual processing algorithms. For instance, DIP MOVEOUT operator will be able to remove the effect of dip from stacking velocity. In this paper, the effectiveness of DMO operator in removing the effect of dips from stacking velocity was examined over two synthetic models when interval velocities are constant or increase gradually with depth. The models consist of first set of selected horizontal layers conflicted with dipping layers. The velocity of the models is assumed to be constant. The second selected model consists of dipping layers with different velocities. DMO operator was also examined over several 2-D seismic lines from central Iran. According to the results of this study, DMO by FOURIER TRANSFORM is a powerful tool for improving processing of seismic data. The results are as follows: (1) STACKING VELOCITIES become independent of dip, so that correct stacking of simultaneous events with conflicting dips is made possible. (2) Velocity analysis is improved, and provides velocities that are more appropriate for migration as well as stacking. (3) Continuity of reflectors will be improved. (4) Ties are improved because a zero OFFSET trace is the same regardless of the direction of the OFFSETs from which it is derived. (5) Coherent noise with impossibly steep dip is removed, without the artificial alignments often associated with dip filters. (6) The signal-to-noise ratio is improved.

Cites

No record.

References

No record.

Cite

APA: Copy

GOLALZADEH, A., & JAVAHERIAN, A.. (2002). DIP MOVEOUT CORRECTION BY FOURIER TRANSFORM IN CONSTANT AND VERTICALLY-VARYING VELOCITY MEDIA. JOURNAL OF THE EARTH AND SPACE PHYSICS, 28(2), 23-34. SID. https://sid.ir/paper/80415/en

Vancouver: Copy

GOLALZADEH A., JAVAHERIAN A.. DIP MOVEOUT CORRECTION BY FOURIER TRANSFORM IN CONSTANT AND VERTICALLY-VARYING VELOCITY MEDIA. JOURNAL OF THE EARTH AND SPACE PHYSICS[Internet]. 2002;28(2):23-34. Available from: https://sid.ir/paper/80415/en

IEEE: Copy

A. GOLALZADEH, and A. JAVAHERIAN, “DIP MOVEOUT CORRECTION BY FOURIER TRANSFORM IN CONSTANT AND VERTICALLY-VARYING VELOCITY MEDIA,” JOURNAL OF THE EARTH AND SPACE PHYSICS, vol. 28, no. 2, pp. 23–34, 2002, [Online]. Available: https://sid.ir/paper/80415/en

Related Journal Papers