Challenges & Advances in Velocity Model Building


28-30 October 2024
Muscat, Oman

Velocity model building plays a vital role in seismic data imaging, being a key factor in exploring the subsurface. Accurate velocity models are essential for meeting the demands of exploration effectively. There is a growing necessity to examine complex geological structures within difficult datasets, emphasizing the crucial significance of detailed velocity models. This workshop focuses on understanding the core principles, limitations, and challenges associated with seismic velocity estimations in practical applications. By examining the relationships between refraction, reflection, surface waves, and non-seismic data, participants will gain valuable insights into the underlying assumptions that simplify wave propagation. Achieving accurate velocities remains a significant challenge in enhancing seismic data quality and depth prediction. Notably, precise velocity models are crucial for imaging the deep subsurface, considering the impact of near-surface irregularities. Additionally, high-resolution velocities are necessary for wave-equation based migration algorithms, full waveform inversion as well as resolving near-surface complexities.

Tailored for geoscientists, the upcoming workshop aims to deepen their understanding of current and emerging technologies involved in velocity model building. Participants will gain comprehensive knowledge of contemporary velocity estimation methods, including the approximations involved in obtaining computationally feasible solutions.

Technical Committee

Committee Chair: Mohammed Al-Balushi, Petroleum Development Oman (PDO)
Committee Co-Chair:
Ali Al Jadher (Saudi Aramco)

  • Abdulatif Al Shuhail, King Fahd University of Petroleum and Minerals (KFUPM)
  • Amir Al Aamri, Oxy
  • Daniele Colombo, Saudi Aramco
  • Ding Xia, Sinopec Geophysical Research Institute
  • Gregory Culianez, Viridien
  • Jose Vargas, ADNOC
  • Khalil Al Hooti, Sultan Qaboos University (SQU)
  • Maan Al Gain, ARGAS
  • Mamadou S. Diallo, Saudi Aramco
  • Noor Alomran- BAPCO Upstream
  • Safa Al-Maskari, Petroleum Development Oman (PDO)
  • Said Al Abri, Consultant
  • Sherif Hanafy, King Fahd University of Petroleum and Minerals (KFUPM)
  • Tom Rayment, DUG
  • Waleed Al-Wardi, Petroleum Development Oman (PDO)
  • Wathik Alaaraji, TGS
  • Yu Zhang, BGP


Priya Singh
SEG Middle East
Email: [email protected]


Registration Fees

For Student Registrations (please note, all student non-members must submit a copy of their student ID to [email protected] to register for the event)

Registration fee includes Coffee breaks (during meeting), Lunches (Monday-Wednesday)

Early Bird Registration Fee (must be registered and paid before 28 September 2024)
US$1,400 (member) | US$1,640 (non-member)

Full Registration Fee (begins from 29 September 2024 onwards)
US$1,610 (member) | US$1,850 (non-member) 

Academia Registration Fee 

Student Registration Fee 
US$250 (member) | US$350 (non-member) 

Seminar Registration Fee (If registered/ registering for workshop)
US$500 (Member) | US$600

Seminar-only Registration Fee
US$685 (Member) | US$785 (Non-Member)

Cancelation Policy

Written notice received by 28 September 2024 entitles registrants to a full refund of the registration fee minus US$50 for processing. No refunds will be issued after 28 September 2024. Substitutions are permissible with written approval by the event organizers. Notify Priya Singh ([email protected]) immediately to request a substitution.

Who Should Attend?

This workshop will be of significant interest to geoscientists, engineers, research institutes & academia.

Workshop Overview and Format

The format of the workshop will feature presentations by invited key experts in their fields who will share their experiences. The workshop will serve as a unique opportunity to have open and extended discussions among the participants.

Workshop Venue

All sessions and events will take place at the Crowne Plaza, Muscat, Oman. The Crowne Plaza Hotel is a 25-minute drive from the airport and is among the leading hotels in Muscat.


Standard City View Room (Single Occupancy ) – OMR 90 Net (including bed & breakfast) (Approx. US$235)

Hotel Booking Link

Please note that this rate is valid only until August 31, 2024. After this date, rooms can be booked directly through the reservation department, and the rate will vary based on the booking date.

Any additional person stay will cost you 10 OMR.

Visa Information/Invitation Letter

For Visa requirements for entering Oman, contact the Oman embassy nearest you or go to the Royal Oman Police to apply for an e-visa. Please note that SEG does not guarantee that you will be granted a visa, nor does it commit SEG to pay any expenses you may incur. It is the sole responsibility of the attendee to obtain the necessary paperwork for entry to Oman.

Please note that per SEG policy, travel expenses, visa and registration for the workshop will be the speaker’s responsibility.

Pre-workshop Seminar

An Introduction to Migration and Velocity Model Building

Date: 27 October 2024
Duration: 7.5 hours
Instructor: Ian Jones
Location: Muscat, Oman

Registration Rates

Seminar Registration Fee (If registered/ registering for workshop)
US$500 (Member) | US$600

Seminar-only Registration Fee
US$685 (Member) | US$785 (Non-Member)

Seminar Overview

The 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: 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 40 years and will introduce the latest developments in full waveform inversion (FWI) and FWI-imaging.

Seminar Outline

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

Introduction & Acknowledgements
Near surface & Topography
Overview of the principles of migration:
     – Ray versus wave descriptions
     – How various algorithms differ, what their limiting assumptions are, etc.
Parameter estimation using ray-based tomography
Generic update loop: hybrid gridded tomography
Non-parametric picking
Parameter estimation using wave-based tomography (‘FWI’) 
Industry comparisons of tomography & FWI & FWI-imaging, and future directions

Learner Outcomes

Upon completion of this course, the participants should be able to:

  • Describe how migration works, in terms of the underlying physics and the associated approximations involved.
  • Classify model building and migration schemes in terms of the theory on which they are based (waves versus rays)
  • Decide which migration and model building scheme are appropriate for imaging a given geological environment.
  • Characterize the limitations of model building and migration schemes, in terms of imaging artifacts.
  • Differentiate between the current state-of-the art and future imaging and parameter estimation technologies.

Ian F. Jones received a joint honors BSc in Physics with Geology from the University of Manchester, UK, in 1977, an MSc in Seismology from the University of Western Ontario, Canada, and a PhD in Geophysical Signal Processing from the University of British Columbia, Canada.

After working for ‘Inverse Theory & Applications Inc.’ in Canada for two years, he joined CGG, where for 15 years he was involved in R&D in the London and Paris offices, latterly as manager of the depth imaging research group. In 2000 he joined ION GX Technology, as a Senior Geophysical Advisor in their London office, and in 2021 joined BrightSkies Geoscience as a consultant Senior Geophysical Advisor.

Technical Program

Keynote Speakers

  • Tariq AlKhalifah, King Abdullah University of Science and Technology (KAUST)
  • Daniela Donno, Viridien
  • Moosa Jahdhami, Petroleum Development Oman (PDO)
  • YoungSeo Kim, Saudi Aramco
  • Sherif Hanafy, King Fahd University of Petroleum and Minerals (KFUPM)
  • Mohamed Mahgoub, ADNOC
  • Adriana Citlali Ramírez, TGS

Technical Sessions

  • Near surface
  • Machine learning
  • Full waveform inversion
  • Full waveform inversion – Elastic
  • Full waveform inversion – Imaging
  • Case Studies (Part 1, 2 & 3)

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, and benefits, please contact us at [email protected].

Stay up-to-date on this workshop!


Important Dates

Early Bird deadline:
28 September 2024

Call for abstracts closed:
24 June 2024

Our Sponsors