RDG, an energy company, completed the acquisition of the German oil producing operations of Wintershall Dea, a German gas and oil producer. Financial terms were not disclosed. "RDG represents the next generation of energy companies. As a young, growing high-tech company, we are following a new approach with regard to local extraction of raw materials. We specialise in optimising the extraction of existing fields and focusing on sustainable, environmentally friendly use," Felix Lerch, RDG Managing Director.