Ferrochrome Lignosulfonate

FCLS is a specially dilution agent and fluid loss control agent used in drilling fluids. It is characterized by resistance to high temperature and salt, and can be used with other admixture agent etc. All its indexes of the product have already reached standards of China’s natural gas industry (SY/T5702-95).
A.Physical and chemical index:
Item Requirement
Appearance Blackish brown powder
Material insoluble to water % ≤2.5
Moisture % ≤8.5
CaSO4calcium sulfate % ≤3.0
Total Fe % 2.5~3.8
Total Cr % 3.0~3.8
Thin (0.66mm surplus of sieve) % ≤3.0
B.Mud Property index:
Item Fresh water drilling mud Salt water drilling mud
Normal temperature
Apparent viscosity mPa.s ≤20 ≤25
Rate of reducing viscosity % ≥85 ≥70
High temperature
Apparent viscosity mPa.s ≤30 ≤45
Rate of reducing viscosity % ≥65 ≥55
C. The Methods of Use
1.The excellent thinning property of FCLS, which shows powerful anti-electrolytes capacity. And it is suitable to all kinds of dispersed mud.
2. Be effective at temperature more than 150~160℃.It can get better effect when cooperated with lignite derivatives.
3. FCLS may be added into drilling fluid in the form of aqueous solution or powder. To keep PH index at 9.5~10.5, the recommended dosage of thinner is 0.5~1.0 %.
D. Package: 25kg/bag sealed in paper-plastic complex valve bag.

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