دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

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

n: organic acids of indefinite composition in naturally occurring leonardite lignite. The humic acids are the most valuable constituent. See lignins.

n: a kind of crude organic macromolecule compound.

n: a naturally occurring oxidised lignite. See lignins.

n pi: naturally occurring special lignites, e.g., leonardite, that are produced by strip mining from special lignite deposits. Used primarily as thinners and emulsifiers.

n: The mineral leonardite, similar to brown coal. Lignite is found in surface deposits worldwide. Lignite is mined and put into piles where it can oxidize in the air before it is dried, ground and bagged for use in drilling fluids. The humic acid content of

very young coal. Moderate to low energy yield.

n: The mineral leonardite, similar to brown coal. Lignite is found in surface deposits worldwide. Lignite is mined and put into piles where it can oxidize in the air before it is dried, ground and bagged for use in drilling fluids. The humic acid content of

n pi: naturally occurring special lignite. e.g., leonardite. that is produced by strip mining from special lignite deposits. The active ingredient is the humic acids. Mined lignins are used primarily as thinners. which mayor may not be chemically modified;however, they are also widely used as emulsifiers.