 HOUSTON, June 01, 2021 GLOBE NEWSWIRE -- ION Geophysical Corporation NYSE: IO and PGS OSE: PGS today announced the successful completion of a survey offshore Egypt acquired on behalf of Shell with an innovative Extended Long Offset ELO design in combination with IONs GeminiTM source technology. This is the last in a string of PGS programs successfully acquired in the Mediterranean starting in July 2020, and the first proprietary deployment of IONs extended frequency source. The Ramform Tethys towed a wide multi-sensor GeoStreamer configuration, while the Ramform Sovereign towed IONs extended frequency source, designed to help capture richer low frequencies to improve subsurface characterization while limiting higher frequencies to a more ecologically-friendly range. All three companies are aligned in their dedication to sustainable business practices that minimize the environmental impact of operations. 