|Seismic Interpretation - SI1|
|Seismic Imaging of Subsurface Geology - SSD|
|Basic Geophysics - BGP|
|Seismic Velocities and Depth Conversion - SVDC|
Duration: 5 days
Instructor(s): David Muerdter
Seismic data is acquired in time - the time taken for the sound to travel from the source to reflectors and to return to receivers. However, wells are drilled in depth, not time. Variations in velocity can distort the depth, size, and shape of possible reservoirs. Therefore, conversion from time to depth is needed for a clear picture of the prospect and the risks involved. This course will teach you how to use velocity information and structural inputs to build a consistent velocity model and/or calibrate ones that have been created during seismic data processing.
In the last decade or two, large strides have been made in seismic processing, especially in PreStack Depth Migration. Routinely used advanced migration algorithms now require more accurate velocity models. Better tools have been developed to ascertain the velocity, and more time and effort are now spent in velocity analysis by the seismic processors. This has greatly improved current velocity models. The interpreter, however, still needs to know how the models are made, how to quality control them, and how to modify and correct them when needed. This class is designed for the interpreter so that he or she understands the theory and practice of how to estimate depths from older time-migrated data, as well as how to quality control (QC) and calibrate newer PSDM data. Also covered in this class are when to reprocess the data and how to communicate with the processor in order to produce the best velocity model and depth image.
As a foundation class, the instruction starts with the basics and proceeds to more complex topics. The student should have a basic understanding of geophysics such as offered in PetroSkills' Basic Geophysics course. Little advanced math (calculus) is used, but algebra and lots of diagrams are applied to explain the needed concepts. One personal computer is provided, at additional cost, for each two participants. Each section of the course is supported with in-class exercises included on a USB flash drive (given to each participant) that contains the exercises and all needed data and software.
"Vivid presentation of the topics, complicated problems were explained very well and easy to understand." - Participant, Germany
Early-career geoscientists and engineers, especially seismic interpreters, and anyone who needs to understand the basic theory and procedures for creating velocity models and converting seismic data from time to depth. This is a foundation level course. It is neither designed nor paced for the experienced velocity modeler or processor.
You Will Learn:
DR. DAVID R. MUERDTER is a geophysical consultant specializing in seismic modeling, illumination studies, and the conversion of seismic time to depth. He is president of LuminTerra LLC in Seattle, Washington. He began his petroleum career with Amoco in New Orleans in 1982 where he processed seismic data, developed and mapped prospects, and became a specialist in VSPs and seismic modeling. In 1988 he joined Sierra Geophysics in Seattle as geophysical specialist focusing on consulting, demonstrating, and training in the use of geophysical and geological software. He became Regional Training Advisor in the Sierra Singapore Office in 1991. In 1994, he launched his own consulting business, which later led to employment as a Research Geophysicist with Diamond (later Emerald) Geoscience Research Corporation. He innovated workflows to raytrace complex salt structures to determine seismic distortion and subsalt illumination. He continues to teach and consult worldwide and has worked on numerous equity studies. He has authored or co-authored numerous professional publications and co-taught a Seismic Exploration class at University of Washington. He is a member of SEG and AAPG and early in his career he spent three years in Malaysia as a teacher and geologist in the U.S. Peace Corps. He received a PhD in Geological Oceanography from the University of Rhode Island.
In-House Course Presentations
All courses are available for in-house presentation to individual organizations. In-house courses may be structured the same as the public versions or tailored to meet your requirements. Special courses on virtually any petroleum-related subject can be arranged specifically for in-house presentation. For further information, contact our In-House Training Coordinator at one of the numbers listed below.
Telephone 1- 832 426 1234
Facsimile 1- 832 426 1244
Public Course Presentations
How to contact PetroSkills:
1-800-821-5933 toll-free in North America or
Address P.O. Box 35448, Tulsa, Oklahoma 74153-0448, U.S.A