Monitoramento Sísmico da Produção em Marlim Sul

Marlim Sul field, situated in Campos Basin, Brazil, applied its first time-lapse seismic acquisition in 2005. The main prime purpose of this 4D study is to understand the flow path of the injection water in the reservoirs. The seismic data were acquired by a streamer steering system and received special attention in terms of velocity analysis and crossequalization process. The 4D results have shown that the water paths are less regular than expected from flow simulation, which indicate the presence of barriers and flow baffles and trends in rock<br>permeability. Also, it was possible to identify swept and non-swept areas in the reservoirs, which allow studies of new well locations and the re-evaluation of present projects in the field.