Whether you have submitted your applications for the available blocks in a UK licensing round or are rejuvenating your exploration portfolio, WesternGeco has the right geophysical products and services to help you make the best possible decision in the North Sea.
Our extensive multiclient library of 2D and 3D datasets help you fill in any data gaps, select an optimal 3D survey location, or reprocess to achieve a fit-for-purpose result.
We offer tailored reprocessing services using our advanced geophysical algorithms and workflows to address the complex geological and geophysical challenges in the North Sea.
WesternGeco has recently embarked in the revitalization of its 3D database and is undertaking broadband, prestack depth migration reprocessing, and reimaging projects over its Inner Moray Firth, Cavendish, and Ravenspurn datasets.
The processing sequences include source and receiver deghosting and full-wavefield inversion to leverage advances made in both signal processing and earth model building technology in recent years.
To support your exploration ventures, WesternGeco have developed two discovery packages, which contain preloaded seismic data with tied and calibrated wells. Each package is a combination of publicly released 3D surveys and exclusive WesternGeco multiclient data. The data has been conditioned and merged to form one contiguous volume ready for framework regional interpretation and analysis.
| Central North Sea Data Package | Southern North Sea Data Package | |
|---|---|---|
| 3D surveys | Central North Sea Data Package 45 | South North Sea Data Package 12 |
| Wells tied to seismic | Central North Sea Data Package 47+ | South North Sea Data Package 48+ |
| Total area | Central North Sea Data Package 14,414 km2 | South North Sea Data Package 12,950 km2 |
With the constantly evolving developments in geophysical technology, reprocessing helps you extract the most value from your legacy 2D or 3D data.
We offer integrated reprocessing, imaging, and inversion workflows to address the issues associated with legacy datasets and the geological and geophysical challenges of the basin.
Our latest data conditioning workflows, including adaptive deghosting and 3D shallow-water multiple attenuation, give you improved resolution, reduced noise and multiple contamination, and better input for depth imaging and inversion.
Our approach to imaging with multiples eliminates crosstalk, which reduces your acquisition footprint and compensates for the lack of near angles recorded with typical towed-streamer geometries to provide you with reliable images for the interpretation and characterization of the shallow section.
With full waveform inversion (FWI), mature models, low frequencies, and long offsets are no longer required to produce high-resolution velocity models. Our FWI algorithms help you overcome your model-building challenges, greatly improving image quality especially in the shallow waters of the UK Continental Shelf, where complex overburden geology is common.
Least-squares migration (LSM-i) uses point spread functions (PSFs) to correct for the spatial variation in illumination frequently observed in legacy datasets. After correction with LSM-i, seismic amplitudes are less affected by acquisition geometry and overburden geology and better reflect changes in subsurface properties. The result is a more reliable inversion to rock properties, ultimately reducing uncertainty in reservoir characterization.
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