دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a special drilling fluid that contains a salt or an ester of formic acid (formate),which is chemically combined with another element such as potassium or cesium. Formate fluids are very stable at high temperatures and can be made very dense (heavy) without adding weighting materials such as barite. Formate fluids are used as completion fluids because they minimise formation damage. See completion fluid, formation damage.

n: a simple organic acid, HCOOH, used for acidising oilwells. It is stronger than acetic acid rot much less corrosive than hydrofluoric or hydrochloric acid and is usually used for hightemperature wells.

an organic acid used in higher temperature wells for shallow damage removal.