pgs4dFirst Break March 2025 | Opportunistic 4D Using a Regional Non-Repeated 4D Monitor, an Ærfugl Case Study This case study from the Ærfugl field in the Norwegian Sea, shows that MultiClientINDUSTRY INSHTS September 18 By Andrew Long (Andrew.Long@) 1 of 8 A Clearer Image │ 4D Inshts from SEG 2018 In this paper I review most of the