Paraffin Dispersants remove buildup of the viscous paraffin wax from equipment. Some crude oils with high levels of paraffin are so viscous that travel in pipelines during the winter months is almost impossible.
Crystallization of this material can buildup in a production string to the point that it can kill a well.
Usually, paraffin dispersants are batched into the well to remove this sticky material from various pipes and tubing.
The following diagram displays the effectiveness of a flow line with, and without treatment of a paraffin dispersant that has producing a fluid with a high level of paraffins.