دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a compound in which chromium has a valence of 6, e.g., sodium bichromate. Chromate may be added to drilling fluids eimer directly or as a constituent of chrome lignites or chrome lignosulfonates. In certain areas, chromate is widely used as a corrosion inhibitor, often in conjunction with lime.

n: mined lignite, usually leonardite, to which chromate has been added or has reacted. The lignite can also be causticised with either sodium or potassium hydroxide.

n: See chrome lignosulfonate.

n: Mined lignite, usually leonardite, to which chromate has been added and/or reacted. The lignite can also be causticized with either sodium or potassium hydroxide. The chrome lignite is used for rheology stabilization and filtration control of the drilling