FCLS is a specially prepared thinner and fluid loss control agent used in drilling fluids. It has good high temperature tolerance, and electrolyte resisting properties as well as good compatibility.
Water insoluble matter ≤2.5%
Calcium sulfate content ≤3.0%
PH value 3.0—3.8
The whole chromium 3.6—4.2%
Complexing degree ≥75%
Mud performance :
Within 150—160 ℃,the performance has remained unchanged for 16 hours ;
2% saline mud performance is better than Fe-Cr-lignosulfonate ;
Strong ability of anti-electrolyte ,suitable for all kinds of mud .
Chrome lignosulfonate is a kind of main raw material ,base of sulfite pulp waste law ,or calcium lignin sulfonate ,lignin sulfonate ,etc .by oxidation ,and a series of complex reactions crafted .Appearance of brown powder ,soluble in water ,aqueous solution was slightly acidic . Makes the molecular weight bigger than the Fe-Cr-molecular weight of lignin sulfonate ,more suitable for drilling mud viscosity reduction process .And also iron content and iron chromium salts similar to or (slightly better ),mud viscosity reducer ,less pollution on oil , Chrome lignosulfonate can not only reduce water effect ,but also dilution effect ,and also has features of salt–resistant ,anti–high temperature ,good compatibility .it is a kind of salt –resistant ,anti-calcium and anti-temperature and ability of the diluents .the products are widely used in fresh water ,seawater ,and saturated salt mud ,all kinds of calcium handling and ultra-deep mud wall with a effective way to stabilize and to make mud viscosity reduction ,reduce cutting action .
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