SPWLA Glossary

Acidizing of a well. Process of introducing acid into a well to dissolve acid soluble materials, in the wellbore or in reservoir rock near the wellbore, which might be restricting fluid flow. Acid-soluble materials in the reservoir rock might occur naturally or might have been introduced during the drilling or completion process of the well. Commonly used acids are hydrochloric and mixtures of hydrochloric and hydrofluoric; although other mineral acids and organic acids have been used, notably citric acid and acetic acid.