SEG | DGS Workshop: Challenges & New Advances in Velocity Model Building

9-11 March 2021 I Virtual Workshop

Considering the differing guidelines and travel restrictions by each country and organization, SEG, DGS and the technical committee have collectively decided to move ahead with the workshop, virtually from 9-11 March 2021.


9-11 March 2021
Virtual Workshop

While it is challenging to translate all aspects of the physical workshop within a virtual environment, we are committed to providing our attendees a unique platform with an immersive event experience to maintain the same depth in knowledge-sharing, engagement and networking, in order to guarantee a comprehensive online experience. Like the physical workshop, the virtual workshop will follow the technical program components such as opening & keynote speech, presentations from industry experts, and moderated discussions. The platform offers an optimized and powerful webpage experience – from the comfort of your home or office.

Workshop Details

Velocity model building is the most important and critical element in seismic data imaging. The demands of exploring more complex new frontiers in particular will not be fulfilled without accurate velocity models. Understanding the fundamentals, and then challenging the approximations of seismic velocity estimations, limitations and pitfalls in practical applications, are the main keys of building the most accurate integrated velocity model. This approach, which exploits the relationship between the refraction, reflection, surface waves and non-seismic data, considers the wave propagation which is based on strong simplified assumptions. Accurate velocities are the main challenge for improving seismic data and depth prediction. For example, near-surface irregularities require accurate velocity models for proper imaging of the deep subsurface. Moreover, high-resolution velocities are also desirable for wave-equation based migration algorithms required for subsalt imaging.

The workshop is designed to provide insights for geoscientists to better understand the principles and limitations of both current and emerging technologies involved in velocity model building. As a result, participants should ideally understand how contemporary velocity estimation methods work, and what approximations are involved in obtaining computationally tractable solutions.

Organizing Committee

  • Committee Chair: Abdulaziz Saad, Saudi Aramco
  • Committee Co-Chairs:
    • Fons ten Kroode, Shell
    • Moosa Jahdhami, Petroleum Development Oman

Committee Members

  • Abdulatif Al Shuhail, KFUPM
  • Abdulaziz Mansour, DGS
  • Denes Vigh, Schlumberger
  • Eric Verschuur, Delft
  • Gerard Schuster, KAUST
  • John Etgen, BP
  • Jose Edgardo Vargas, ADNOC
  • Kamel Belaid, BGP
  • Khaled Delaijan, Saudi Aramco
  • Patrice Guillaume, CGG
  • Raya Al Kalbani, PDO
  • Tristram Burley, ION


Anneke de Klerk
SEG Middle East
Telephone: +97143712710
Email: [email protected]


Registration Categories

Single Day Pricing (1/2 day Workshop)
US$125 (member) | US$175 (non-member) | US$30 (student)

Early Bird Registration Fee (3 x 1/2 day Workshop) (expires 16 Feb 2021)
US$410 (member) | US$510 (non-member) | US$75 (student)

Full Registration Fee (3 x 1/2 day Workshop) (begins 17 Feb 2021)
US$450 (member) | US$550 (non-member) | US$90 (student)

Pre-Workshop Course & Workshop Registration [4 half-days course (1 - 4 March 2021) + 3 half-days of event (9 - 11 March 2021)]
US$750 (member) | US$940 (non-member) | US$150 (student)

For Student Registrations, please contact [email protected].

Written notice received by 23 February 2021 entitles registrants to a full refund of the registration fee minus US$50 for processing. No refunds will be issued after 23 February 2021. Substitutions are permissible with written approval by the event organizers. Notify Anneke de Klerk ([email protected]) immediately to request a substitution.

Workshop Schedule

Tuesday 9 March to Thursday 11 March:

4:00 - 9:30 AM CST | 10:00 - 3:30 PM GMT | 1:00 - 6:30 PM AST | 2:00 - 7:30 PM GST

Who should attend

This workshop will be of significant interest to:

  • Geoscientists
  • Engineers
  • Research institutes & academia

Technical Program

Technical Program now available in different time zones for your easy reference.

Opening Speakers

  • Saleh Al-Saleh, Saudi Aramco
  • Abdullah Al-Maamari, Petroleum Development Oman

Closing Speaker

  • Arthur Weglein - University of Houston

Keynote Speakers

  • Aria Abubakar, Schlumberger
  • Brian Hornby, Hornby Geophysical Services, LLC
  • Daniele Colombo, Saudi Aramco
  • Denes Vigh, Schlumberger
  • Eric Verschuur, Delft University
  • Ian Jones, ION
  • John Etgen, BP
  • Tariq AlKhalifah, KAUST
  • Sherif Hanafy, KFUPM

Technical Topics:

  • Role of Acquisition
  • Non-Seismic methods
  • Poster Session
  • Borehole seismic
  • Near surface
  • Anisotropic velocities
  • Wave Equation Tomography
  • Big Data and Machine Learning
  • Waveform inversion
  • Case studies

Pre-Workshop Course

An Introduction to Migration and Velocity Model Building by Ian F. Jones

Date: 1 – 4 March 2021 (Virtual Course)
Time: 4:00 - 8:00 AM CST | 10:00 - 2:00 PM GMT | 1:00 - 5:00 PM AST | 2:00 - 6:00 PM GST
Duration: Over 4 days for 4 hours/day

Registration Categories:

Pre-Workshop Course (4 x 1/2 day Course)
US$390 (member) | US$480 (non-member) | US$90 (student)

Pre-Workshop Course & Workshop Registration [4 half-days course (1 - 4 March 2021) + 3 half-days of event (9 - 11 March 2021)]
US$750 (member) | US$940 (non-member) | US$150 (student)

Register for Course

Course Overview

This course will commence with an overview of different migration schemes, and cover the motivations for building detailed velocity models, and briefly discuss the inherent limitations on our ability to build a detailed model.

Current-day practice will be covered, exemplified via many case-studies, and we will briefly discuss the less well known and emerging techniques. The approach will mostly be non-mathematical, and will rather try to concentrate on an intuitive understanding of the principles, and demonstrate them via case histories. The bias in this course is towards those techniques that have seen widespread industrial use over the past 30 years. Unfortunately, some topics will not be covered, in-part due to the time constraints: these omissions will include consideration of VSP and multi-component data, and Marchenko imaging.

Prerequisites (Knowledge/Experience/Education Required)

The course is designed to be followed by anyone with a broad geoscience background: no specific detailed foreknowledge is required, although a familiarity with geophysical terminology will be useful.

Course Outline:

For the topics listed below, real data examples will be used to demonstrate the application and limitation of each technique.

  1. Why do we need a detailed velocity model?
  2. How detailed can we get?
  3. Resolving short-scale-length velocity anomalies:
  4. Examples of current industrial practice for various geological settings (time permitting):
  5. The Future: emerging R&D directions (time permitting)

For more details on the Course Outline, Learner Outcomes and Instructor Bio, please click here.

Sponsorship Opportunities

To maximize exposure and visibility for our partners, we offer an array of unique sponsorship opportunities designed to suit a range of budgets with specific target audiences for optimum return on investment. For a list of sponsorship opportunities, benefits and the application form to sponsor, please contact us at [email protected].

Register now!

Important Dates

Early Bird Savings End:
16 February 2021

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