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Tutorial 4: Seismic Signal Processing

Sunday, May 26, 2-5pm

Presented by

Wail A. Mousa, Abdullatif A. Al-Shuhail

Abstract

In the tutorial we are going to start by giving an overview about geophysical techniques and signals, with more emphasis on seismic data. Then we will spend the remaining first third of the tutorial time on providing the participants with necessary background for them to analyze seismic reflection data. This will, hopefully, allow them to distinguish between primary seismic signals and unwanted seismic energy like multiples, diffractions, ground roll, etc. The second part will be dealing with various applications of deterministic DSP techniques related to seismic reflection data. This includes, but not limited to, linear filtering, spectral analysis, sampling, and some commonly used transform methods used in seismic data. The last part of the tutorial will mainly be focusing on statistical DSP techniques applied to seismic reflection data such as optimum filtering. This includes very interesting applications such linear predication for multi-path signals removal, seismic wavelet processing, and noise cancelation. We will also provide, during the tutorial, some highlights on recent advances of compressive sensing with application to seismic data.

The following presents the outline for the proposed tutorial (this includes showing various interesting examples of processed seismic data):

Part I: Seismic theory background
•Introduction to seismic theory: elasticity, the wave equation, types of waves, single and multilayer models of reflection and refraction, etc.
•The seismic convolution model, acquisition of 2-D, 3-D, and 4-D seismic data
•Understanding the characteristics of seismic events. Noise in seismic data: random and coherent noise types

Part II: Deterministic seismic data processing:
•Sampling of seismic signals
•Discrete transforms used for seismic data analysis including DFT, FFT, Slant Stack, and z-transforms
•Design of 1-D and 2-D FIR and IIR digital filters like BPF, Fan Filters, and Wavefield Extrapolation Filters

Part III: Statistical seismic data processing:
•Fundamentals of seismic deconvolution, seismic linear prediction and noise cancellation
•Seismic wavelet processing

Speaker Biography

Wail A. Mousa

Wail A. Mousa received the B.Sc. degrees (with honors) in electrical engineering and mathematical sciences and M.Sc. degree in electrical engineering from King Fahd University of Petroleum and Minerals (KFUPM), Dhahran, Saudi Arabia, in 2000, 2001, and 2003, respectively, and the Ph.D. degree in electronics and electrical engineering from the University of Leeds, Leeds, U.K., in 2006. He was the first Saudi to be sponsored by Schlumberger Dhahran Carbonate Research (SDCR), Dhahran, Saudi Arabia, for a Ph.D. He was a Graduate Assistant with KFUPM, and was then promoted to Lecturer between 2000 and 2003. He then worked as a Research Scientist at the SDCR during 2003 and 2009 period, focusing on applied signal processing for geology and geophysics. He is currently working as an Assistant Professor with the Electrical Engineering Department, KFUPM, teaching various Signal Processing courses and supervising students, where he has a special interest in teaching Geo-Signal Processing. His research interests include digital signal and image processing and their applications in geophysics, geology as well as petro-physics, design and implementation of digital filters including wavefield extrapolation filters, image segmentation, pattern recognition and classification, and their applications related to geophysical and geological data. Dr. Mousa has published more than 25 papers in refereed journals and conferences and has many pending patents. He also published his first coauthored book, titled Processing of Reflection Seismic Data Using MATLAB (Morgan & Claypool, 2011), and signed recently a contract with Cambridge University Press for a textbook on Seismic Signal Processing. He is a member of many international and local professional organizations such as the IEEE and the Society of Exploration Geophysicists (SEG). In late 2006, he represented Saudi Arabia in the inaugural World Petroleum Council-Youth Committee (WPC-YC) and has been Chairman of the WPC-YC from June 2008 to December 2011. He has received many awards, including a letter of distinction from the CEO of Schlumberger in 2008 for his technical contributions to the company.

Abdullatif Al-Shuhail

Abdullatif is an associate professor of Geophysics at King Fahd University of Petroleum & Minerals (KFUPM). He received his B.S. degree in Geophysics from KFUPM in 1987. He got his M.Sc. and Ph.D. in Geophysics from Texas A&M University, College Station. He founded the Near Surface Seismic Investigation Consortium at KFUPM in 2006. His fields of interests include seismic characterization of fractured reservoirs, near-surface effects on petroleum seismic data, and ground penetrating radar. He is member of the Society of Exploration Geophysicists (SEG), European Association of Geoscientists and Engineers (EAGE), and Dhahran Geoscience Society (DGS).