Offshore staff
OSLO, Norway – PGS and ION Geophysical have completed a seismic survey offshore Egypt for Shell.
This deployed an extended long offset (ELO) design in combination with ION’s Gemini source technology. It was also the last of a series of PGS surveys in the Mediterranean Sea that started in July 2020, and the first proprietary deployment of ION’s extended frequency source.
PGS’ Ramform Tethys towed a wide multi-sensor GeoStreamer configuration, while the Ramform Sovereign towed the extended frequency source. The goals were to capture richer low frequencies to improve subsurface characterization while limiting higher frequencies to a more ‘ecologically-friendly’ range.
Nathan Oliver, executive vice president Sales & Services at PGS, said: “The ELO configuration in combination with ION’s extended frequency source enabled efficient recording of offsets up to 16 km (9.9 mi).
“The innovative ELO survey design combines optimal spatial sampling for better subsurface imaging together with long offset multi-sensor GeoStreamer acquisition for accurate velocity model building. ELO is a cost-competitive and efficient configuration compared to other solutions for imaging deep targets.”
06/01/2021
