Organic acid
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An organic acid is an organic compound with acidic properties. The most common organic acids are the carboxylic acids whose acidity is associated with their carboxyl group -COOH. Sulfonic acids, containing the group OSO3H, are relatively stronger acids. Other groups can also confer acidity, usually weakly: hydroxyl group -OH, -SH, enol group,and the phenol group.
An organic acid is any of various acids containing one or more carboncontaining radicals, such as acetic or formic acid, used in oil and gas well-stimulation treatments. Inhibited organic acids are much less reactive with metals than are HCl or mixtures of HCl and HF. For this very reason, organic acids are used at high bottomhole temperatures or when long contact times between acid and pipe are needed. The relative stability of the conjucate base of the acid determines its acidity.
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