The tower concentrated solar system can provide zero-carbon superheated steam for the oil field.However the solar resources are changing with time and weather condition,which may lead to fluctuation of steam flow.A new combined steam supply system network is designed,in witch the stability of steam can be guaranteed by integrating solar steam with gas-fired steam boiler to the network.Based on different types of pipeline networks and access location of solar steam,the steady-state and transient operating conditions of pipeline network during solar steam fluctuations are analyzed.Compare with annular network,oil well inlet steam flow of tree-type network has greater fluctuation when solar steam is changing.When solar steam is connected to the main pipe of network,the oil well inlet steam fluctuation from the influence of solar steam is obviously less than that at the remote end of the network.By combining the solar steam and gas-fired boiler steam,the steam fluctuation form the influence of solar steam can be significantly restrained.
solar energy utilizationheavy oil thermal recoverysteam networkstability