Offshore seismic data firm TGS today announced Amendment Phase II, a continuation of its ultra-long offset ocean-bottom node (OBN) acquisition in the U.S. Gulf of Mexico. This project extends the first phase of the survey that was acquired to the east in 2018.TGS said that the 151 OCS block survey would begin in December 2022. It is expected to be completed during the first quarter of 2023. 'Key to…