Bramberge (Germany)

The Bramberge field in Germany is being waterflooded and producing at high water-cut. The challenges in this reservoir are the large variations in salinity due to a mix between the initial reservoir water (120 g/L TDS) and injection water (33 g/L) as well as the high hardness of the injection water. In spite of this, a surfactant-polymer formulation exhibiting high recovery was developed for the field (Tabary, et al., 2012) and adsorption was reduced to acceptable levels by using appropriate adsorption inhibitors. The project is proceeding and a field pilot is planned.