Self-published 12-page White Paper on the subject of National Data Repositories. Distributed at NDR conference in June 2017.
Technical Content
Reviving old seismic data using latest broadband processing technology: A case study from West of Shetland
Reviving old seismic data using latest broadband processing technology: A case study from West of Shetland
3500 km2 of marine data from West of Shetlands have been reprocessed using latest processing technologies available (including deghosting). This case study demonstrates the benefit to re-process conventionnal data (acquired in the 90's) to get a broadband result (better definition, larger spectrum).
We propose a laterally constrained surface wave inversion to obtain a reliable near-surface shear-wave velocity field from Rayleigh wave measurements. This workflow is targeted at dense 3D broadband Wide-Azimuth land surveys, aiming to obtain reliable and realistic lateral shear-wave velocity variations pertinent with regard ...
Improved Deep Target Reservoir Imaging with Broadband WATS Data in the East China Sea
Improved Deep Target Reservoir Imaging with Broadband WATS Data in the East China Sea
A broadband Wide-Azimuth Towed-Streamer (WATS) survey was acquired in a shallow water region of offshore China for the purpose of resolving strike direction narrow-azimuth acquisition shortcomings. However, the current WATS acquisition is much sparser than WATS surveys in deep water environments. The challenges of ...
Revealing shallow and deep complex geological features with FWI: Lessons learned
Revealing shallow and deep complex geological features with FWI: Lessons learned
Conventional Full Waveform Inversion (FWI), mostly based on diving-waves, has become a standard velocity model building tool. Using a dataset from the deep water on the Mexican side of the Gulf of Mexico (GoM), we show that FWI can be effective at resolving different ...
Coordination marine acquisitions to tackle seismic interference noise
Coordination marine acquisitions to tackle seismic interference noise
This paper presents leanings from the 2015 and 2016 North Sea acquisition season with regards to acquiring data with lots of seismic interference noise.
Improving Subsalt Imaging with Least-squares RTM - A Case Study At Kaskida Field, Gulf of Mexico
Improving Subsalt Imaging with Least-squares RTM - A Case Study At Kaskida Field, Gulf of Mexico
Kaskida is a large three-way reservoir underneath a complex salt body and truncated by a salt weld. Seismic imaging at the reservoir level is impacted by the inhomogeneous illumination from the complex overburden, which distorts the amplitude of reservoir reflectors and generates lots of ...
Use of oil slicks to unlock reservoir characterization of broadband seismic
Use of oil slicks to unlock reservoir characterization of broadband seismic
In offshore prospective areas, oil slicks at the sea surface are often seen as being the visible expression of a working petroleum system at depth. Synthetic Aperture Radar (SAR) has proven to be an effective tool for identifying these oil slicks by virtue of ...
Advances in seismic interference noise attenuation
Advances in seismic interference noise attenuation
This paper presents recent advances in the area of seismic interference (SI) attenuation. We show how high amplitude and broadside SI noise can be nearly perfectly attenuated as long as the interfering noise is shot-to-shot incoherent. Furthermore, we present a new algorithm that also ...