Analysis on the Oil Transport Pipeline Unsteady Operation

With the increasing of oil demand, the construction of oil pipeline is enlarging and the large oil pipeline network is developing. To instruct effectively oil pipeline to be operated safely, to control and optimize effectively oil pipeline operation condition, it is necessary to find out the change and characteristics of oil pipeline operation condition as well as its influence to the upstream operation and the downstream operation. Based on analyze the oil pipeline equations, this paper choose SPS software to simulate oil pipeline unsteady operation conditions. When the pump unit of a pump station is stared, the flow of this station will increase, the inlet pressure will fall and the outlet pressure will increase. When the pump unit of a pump station is stopped, the flow of this station will decrease, the inlet pressure will increase, and the outlet pressure will fall. When the block valve of a block valve station is closed, the flows of upstream and downstream will fall, the inlet pressure will increase, and the outlet pressure will fall. When the leak in oil pipeline is happening, the pressures of upstream and downstream will fall, the flow of upstream will increase and the flow of downstream will fall. These conclusions can help the managers and controllers of oil pipeline discovers matters and adjust operation scheme as well as perform emergency operation schemes.