Barium Sulfate Scale Removal at Low-Temperature

Table 5

The chemical composition of the new scale dissolver.

Component	wt.%	Function
DTPA	15~30	Chelating agent
Oxalic acid	5~15	Activator
Tannic acid	1~5	Activator
Nonionic surfactant	<1	Penetrant
Water	60~68	Base fluid