This document discusses maximizing the effectiveness of time-lapse (4D) seismic surveys in the Niger Delta region. It provides examples of 4D seismic surveys conducted on fields in the Niger Delta like the Bonga field, Meren field, and Ofon field. These case studies demonstrate how 4D seismic helped locate bypassed reserves, optimize well placements, and improve understanding of reservoir connectivity and fluid movement. The document argues that expanding the use of 4D seismic in more fields in the Niger Delta, both mature and new, can help maximize enhanced oil recovery and meet Nigeria's oil production targets.