Although the main purpose of acidizing operations is to remove the skin on the formation, increase the permeability in order to improve the inflow performance; protecting the tubulars and preventing any damage to downhole tools should also be considered. Nelco Gulf provides the most suitable acid stimulation products based on formation, temperatures, nature and strength of acid and type of the steel used.

During acid or scale-removal treatments, various compounds may be dissolved in the treatment fluid. As the acid reacts and the pH increases, reaction products may precipitate as a gelatinous, insoluble mass. Should this occur within the formation matrix, it is almost impossible to remove and permanent permeability damage may occur. Chelating agents prevent precipitation by keeping ions in a soluble form until the treatment fluid can be flowed back from the formation during clean-up.