Workshop 10
Elastic inversion of 2D/3D UHR/EHR seismic data for offshore wind farms. What are the challenges to get there? Monday June 2nd |
Description
The objective of this workshop is not to present case studies, but rather to identify best practices, potential pitfalls and causes of uncertainties in the required input data from hands-on experience and lessons learned throughout the industry. This workshop will therefore bring together all parties involved in the development of acquisition technology, processing, and modelling methods for both 2D/3D UHR seismic and in-situ geophysical data (borehole geophysics, seismic CPT) to improve the quality of those data for elastic inversion approaches applied to offshore wind farm geotechnical site characterization.
The workshop will include three technical parts and one panel discussion as follows:
- Part 1: 2D/3D UHR seismic acquisition & processing (4 talks)
- Part 2: Seismic CPT and Borehole geophysics (3 talks)
- Part 3: Seismic inversion (3 talks)
- Part 4: Panel discussion: Open floor discussion with 4 industry/academy experts
Sub-Topics that will be covered in the workshop:
Seismic acquisition:
- Current seismic acquisition methods: advantages, disadvantages, and challenges
- Low environmental impact sources, non-towed streamer solutions, positioning challenges, fibre-optic methods, quest for low frequencies
Seismic processing and imaging:
- Ghosts, multiples, statics, velocity, diffractions, interpolation methods, imaging methods, Scholte wave analysis
Borehole geophysics and elastic inversion:
- PSSL logging, AVO inversion, FWI
Geotechnics & geophysics integration:
- Integration with other (local) geotechnical measurements
Convenors
- Eric Cauquil (TotalEnergies)
- Dong Zhang (Fugro)
- Gwenaelle Salaun (Orsted)
- Eric Verschuur (TU Delft)
- Andy Hill (BP)
Participant Profile
This workshop is timely and coincides with significant interest on the development of Quantitative Ground Models – from acquisition technology to data centric modelling approaches – across industry and academia. Therefore, the workshop will attract a broad spectrum of EAGE attendees, including geologists, geophysicists, and geotechnical engineers. Participants will gain insights and explore current practice and innovative workflows related to UHR seismic elastic inversion, and its application to offshore renewables as part of the energy transition, while providing a unique networking opportunity between seismic acquisition, processing, modelling, and inversion experts. Researchers, practitioners, students, and decision makers interested in better understanding the current progress and challenges of seismic UHR acquisition, processing, elastic inversion, borehole geophysics, and integration with geotechnics for offshore wind farm design.
Workshop Programme
| Time | Activity |
|---|---|
| 09:30 | Introduction Workshop by Eric Cauquil (TTE) & Dong Zhang (Fugro) |
| Section 1: 2D/3D UHR/EHR Seismic Acquisition & Processing - Chairs: Patrick Charron (TTE) & Patrick Burn (Fugro) | |
| 09:35 | 1.1. How and why certain concepts of traditional survey design are maladapted to UHRS? - Henrique Duarte (GeoSurveys) |
| 09:50 | 1.2. UHRS/UUHR MCS acquisition and positioning challenges – in focus of uncertainties and resolution - Gino Freilinghaus (IWES) |
| 10:05 | 1.3. Scarily smart and fast: The rise of machine learning in UHR 3D seismic acquisition and imaging - Allan McKay (TGS) |
| 10:20 | 1.4. Acquisition and processing considerations for UHRS pre-stack inversion - Peter Cox (RockWave) |
| 10:35 | Discussion |
| 10:55 | Coffee Break |
| Section 2: Seismic CPT & Borehole Geophysics - Chairs: Alistair Robertshaw (BP) & Maarten Vanneste (NGI) | |
| 11:15 | 2.1. Perturbations in Seismic Cone Penetration Test (SCPT) and P&S Suspension Logging (PSSL) - Nico Parasie (Fugro) |
| 11:30 | 2.2. Is PS logging a suitable tool for the investigation of the first 40 meters in the soil for Offshore wind developments? - Edouard Mouton (SismOcean) |
| 11:45 | 2.3. Geotechnical in-situ measurements: an overview of current technologies to asses soil stiffness. Their strengths, limitations and prospects for improvement as well as upcoming technologies. - Niels Christian Hoegh van Gilse (Ørsted) |
| 12:00 | Discussion |
| 12:15 | Lunch Break |
| Section 3: Seismic Inversion - Chairs: Luis Pernia (TTE) & Eric Verschuur (TUD) | |
| 13:15 | 3.1. UHRS pre-stack inversion - challenges and possibilities - Esben Dalgaard (SolidGround) |
| 13:30 | 3.2. UHRS 1.5D Elastic Inversion: Addressing Shear Property Limitations - Angie Kelsay (Delft Inversion) |
| 13:45 | 3.3. Towards FWI for Offshore Renewables Projects - Mark Vardy (SAND Geophysics) |
| 14:00 | Discussion |
| 14:15 | Coffee Break |
| 14:30 | Panel Discussion - Moderators: Leon Barens (TTE) & Sanket Bhattacharya (Fugro) |
| Joek Peuchen (Fugro), Andy Hill (BP), Gwenaelle Salaün (formerly Ørsted) & Guillaume Sauvin (Equinor) | |
| 15:50 | Wrap - Up |
| 16:00 | Closure |
