pgs4dINDUSTRY 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 theNorwegian seismic company PGS has secured a 4D survey contract for an international energy client in West Africa. The mobilization for the work is scheduled for early