Chrome Free Lignosulfonate was introduced to the drilling industry long time ago used as water-based mud reagent in a wide variety of drilling environments and over a broad temperature range.Has good thinning performance and filtration control capacity the mud performance of fresh water is better than salt water mud.With anti-high temperature 150℃,it can cooperate with other admixture agent.
Main Specification
| Item | Requirement |
| Material insoluble to water | 2.5%max |
| Moisture | 8.5%max |
| pH(2% water solution) | 2.8~3.8 |
| Appearance | Brown powder |
Mud performance
| Item | Fresh water drilling mud | Salt water drilling mud | |
| Normal temperature | Apparent viscosity mPa.s | ≤20 | ≤25 |
| Rate of reducing viscosity % | ≥85 | ≥65 | |
| High temperature | Apparent viscosity mPa.s | ≤35 | ≤45 |
| Rate of reducing viscosity % | ≥60 | ≥45 |
Application
1.free-Chrome thinner may be added into drilling fluids either in the form of solution or powder. PH:10.0~10.5
2.As thinner ,fresh water mud 1.0%(W/V), salt water mud 2.0%(W/V).
Package
25kg net weight. With PE film bag inside and paper-plastic complex bag outside.