PGS and ION Geophysical have completed a 3D survey offshore Egypt acquired on behalf of Shell with an innovative Extended Long Offset (ELO) design in combination with ION’s Gemini source technology.
PGS and ION Geophysical have completed a 3D survey offshore Egypt acquired on behalf of Shell with an innovative Extended Long Offset (ELO) design in combination with ION’s Gemini source technology.
This is the last in a string of PGS programmes in the Mediterranean starting in July 2020, and the first proprietary deployment of ION’s extended frequency source. The vessel Ramform Tethys towed a wide multi-sensor GeoStreamer configuration, while the Ramform Sovereign towed Ion’s extended frequency source, designed to help capture richer low frequencies to improve subsurface characterization while limiting higher frequencies to a more ecologically friendly range.
Gerard van Drempt, Shell global category manager geophysics said, ‘PGS survey execution, combined with the ION Gemini source performed well and Shell is pleased to see the expected uplift in low-frequency content.’
Nathan Oliver, EVP sales and services at PGS said: ‘The ELO configuration in combination with ION’s extended frequency source enabled efficient recording of offsets up to 16 km. 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.’
