ACETIC ACID SOLUTION & GLACIAL:
Acids like hydrochloric acid, acetic acid and other acids are used in pre-fracturing stage or before the actual commencement of fracturing to clean out the perforations in the wellbore and to initiate fissures in the surrounding rock. Acetic acid is a weak organic acid that is used in fracturing. It is slightly more costly but much less harmful than Hydrochloric acid.