Credit Wintershall Dea Expertise Wintershall Dea is not only specialized in producing gas and oil. Building a pipeline infrastructure and the distribution of natural gas are further fields of expertise. Expertise Transport Pipelines are the heart of Europe's gas infrastructure. Together with Gazprom, Wintershall Dea has contributed to creating and expanding the transport systems. Expertise Natural Gas Sales Wintershall Dea supplies the natural gas it produces itself to major industrial customers and sells further quantities at virtual trading points.