Design of Differential Temperature Sequential Transportation Technology for the Crude Oil with High Pour Point
Considering the physical properties of oil,the pour-point reducer test of 1#high pour-point crude oil was carried out,including making use of the software simulate both flow characteristics and heat transfer characteristics of the high pour-point crude oil in its differential temperature sequential transporta-tion.The results show that,the pour-point depressant-added delivery process for the 1#high pour-point crude oil should be adopted in the differential temperature sequential transportation.When the concentra-tion of pour-point depression agent stays at 800ppm,the 1#crude oil's freezing point can be reduced to 36℃;when two kinds of oils are transported in differential temperature sequence,the inlet temperature at the end station should be higher than 41℃;during the production,the delivery time of a transportation batch asks for 3.5 days and the pour-point depressant has to be added for the delivery process in the initial stage.Under the design flow rate,the delivery time of a transportation batch is 3.0 days,and the critical ground temperature for the sequential delivery of the 1#crude oil is 12℃.
high pour-point crude oildifferential temperature sequential transportationpour-point de-pressanttransportation batchcritical ground temperature
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