pt. 1. Environmental and energy policy & law for underground storage -- pt. 2. Geological storage and monitoring -- pt. 3. Enhanced gas and oil recovery using CO[subscript 2] (CO[subscript 2]-EGR/EOR) -- pt. 4. Rock mechanical behavior in consideration of dilatancy and damage -- pt. 5. Underground storage of natural gas and oil -- pt. 6. Underground storage of wind energy -- pt. 7. State-of-the-art & new developments in gas supply in Germany and China -- pt. 8. Workshop in Daqing : EOR & new drilling technology.