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 ...
Short period demultiple using iterative second order multi-dimensional predictive deconvolution
Short period demultiple using iterative second order multi-dimensional predictive deconvolution
2D deconvolution is an attractive approach for short period multiple prediction as it does not require direct recording of the multiple generator and can model multiples relating to more than one multiple generator at a time. One drawback, however, relates to an inherent over ...
Prediction of fine reservoirs interbedded with thin coals
Prediction of fine reservoirs interbedded with thin coals
Make a technical workflow including rockphysics, post-stack gestatistical inversion, seismic forward research and coal constrained pre-stack geostatistical inversion for the fine reservoir predictiong under coal interbedded. This work flow achieved huge success in the new development wells drilling.
Geological consistency from inversions of geophysical data
Geological consistency from inversions of geophysical data
A subsurface volume that can be reliably interpreted in terms of geologically-relevant attributes is a reasonable objective for products from depth inversion workflows. Commonly the field geophysics data available are inherently non-unique and deficient (noise, aliasing, etc.), so an implementation of some type of ...
High-resolution Land Full Waveform Inversion - A Case Study on a Data Set from the Sultanate of Oman
High-resolution Land Full Waveform Inversion - A Case Study on a Data Set from the Sultanate of Oman
Standard reflection-based model building for land applications is challenging due to reduced data quality, near-surface heterogeneities, and the low-fold of reflection data at shallow depths. Broadband and large offset data acquisitions have been developed with the aim of investigating full waveform inversion (FWI) as ...
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 ...