Principles of Seismic Velocities and Time-to-Depth Conversion

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Despite its fundamental importance for acquiring an accurate picture of the subsurface, the topic of time-to-depth conversion on the basis of true propagation velocities has never been addressed in the form of a comprehensive, dedicated book. The present book has long been overdue for bridging this obvious gap in geoscience. Geophysicists proficient in data processing fully appreciate that depth imaging, despite the excellence achieved in data quality and lateral positioning, does not amount to true or accurate depth conversion. This is because modelling "velocities" in processing (described in the book as "pro-velocities") can often be quite different from the actual propagation velocities.

The many forms of velocities, their interrelationships, their derivation, their assessment and the various factors that could affect their stability and accuracy, are all thoroughly...


Product details

Author(s): M. Al-Chalabi
Pages: 491
Appearance: Hardcover
Publication date: 2014
Language: English
ISBN Number: 9789073834873
Publisher: EAGE Publications bv

Customer Review

D. Bartel, Chevron (complete review to be found in The Leading Edge Oct 2014)

Al-Chalabi is a well-known expert in velocities and time- to-depth conversions. This book embodies the knowledge and expertise he has in the specific area of time-to-depth conversions. Although not necessarily an area of geophysics known to be at the forefront of technology, it is crucial for helping to develop accurate maps and images of the subsurface and to correctly estimate the necessary depths to drill wells. The book is complete with appendices that show the development of several velocity equations to relate different types of velocity and to evaluate velocity heterogeneity. I recommend this book for technical geophysicists who are involved with matching their seismic data to wells and need accurate depths for drilling. The number of good examples throughout the book illustrating different situations shows the breadth of the author’s experience.

M. Skut, AGH - University of Science and Technology

In very clear language, Al-Chalabi gives us a complete introduction to seismic velocities and depth conversion theory. The book contains comprehensive explanation of topics contained in the eleven clearly divided chapters, allowing easy and accurate perception. It also includes many complementary notes in each of the chapters and a very handy glossary at the end enabling quick check of the notions.