Cement-slurry-flow properties are complicated and do not exemplify the fluidity of ideal Newtonian fluid behavior. The thinning effects of dispersants can help modify slurry rheology for easier mixing and placement. Rheology is a measure of both the resistance to flow and a reduction in the resistance to flow under pressure. Adding dispersants can lower friction and lower pressure during pumping, enhance turbulent flow at reduced pumping rates, and allow operators to mix densified cement slurries. Dispersants can also be used to help reduce pressure exerted when placing cement across unconsolidated sands, depleted or weak formations, possibly preventing lost circulation.