Based on DLVO Theory: A Theoretical Model of Boundary Condition for
Heavy Oil in Low-Temperature Transportation
The low-temperature transportation, a process of gathering and
transportation at ultrahigh water content, can incline the energy
consumption and elevate the efficiency of the surface gathering system.
Here we found that there is the risk of wall sticking of heavy oil in
the low-temperature transportation.In this work, a theoretical model of
boundary condition for heavy oil in low-temperature transportation based
on DLVO theory was proposed to predict the wall sticking occurrence
temperature. The outcomes of modeling results had a good agreement in
comparison with experiment results (error values:
0.1°C~1.5°C).Moreover, the interaction mechanism of wall
sticking was correlated well with the Hamaker constant, radius of oil
droplets, Ζeta potential, and Debye length.