Waterflood Performance Outcomes across a Set of Deep-water Turbidite Reservoirs

Many Angola deep-water reservoirs now have a production history of at least a few years, and up to 15 years. In most cases, reservoir sweep has been tracked with one or more 4D seismic surveys, in addition to pressure and production data. The information has been integrated into reservoir simulation models. A set of waterflooded turbidite reservoirs is discussed, with deposition ranging from well-developed channel complexes to sheet-like sands. Some fields have significant quantities of thin-bedded pay, and there is varying influence from fault baffles. Aquifer strength is another important variable between reservoirs.