Seismic data reprocessing service supports offshore wind feasibility studies

Offshore staff

CHIANG MAI, Thailand — Ocean Geophysics is offering to reprocess freely available seismic data to help developers looking to bid for wind farm projects.

According to the company, legacy seismic data from the offshore oil and gas and offshore renewable energy industries is available via national energy authorities in the UK, Germany, the Netherlands, Denmark, Norway and Australia.

It is also possible to acquire historical seismic data from the archives of oil companies that previously operated in these regions.

Ocean Geophysics applies modern software and processing techniques to the datasets to provide new insights into the shallower lying parts of the subsurface.

This, it claims, can help its clients reduce the costs and risks of potential offshore wind developments through avoiding reconnaissance surveys offshore.

Chris Weller, director of seismic, said, “We are essentially exemplifying the transformative power of advanced data processing techniques in enhancing vintage sub-bottom profiler/pinger data and S-UHRS from previous seismic surveys.”

Initially, raw sub-bottom profiler data undergo rigorous preprocessing to mitigate noise and artefacts, ensuring the integrity of data analyses, followed by application of algorithms and signal processing techniques.

Integrating shallow and deeper data layers has historically been problematic due to discrepancies in resolution and clarity. However, the company says it can merge these disparate layers, leading to a clearer interpretation of subsurface structures and sedimentary formations.

 “This breakthrough has unveiled previously obscured details, notably exposing a delicate layer of sediment that had until now remained invisible to conventional analysis methods,” Weller said. “This thus gives insights into geology that was previously obscured by both the processing at the time and also the method of acquisition.”

05.16.2024