Description

Chrome lignosulphonate: marketing5 at greatchem. com Specifications: 1) Appearance: blackish brown powder 2) Material insulation to water: 2.5% max. 3) Total Ca as CaSO4: 3.0% max. 4) Total Cr: 4.0% min. 5) Cr complex: *0% min. 6) Moisture content: 8.5% max. Performance in mud: 1) Stability in high temperature: after *6 hours, the performance mud has no change at high temperature between **0 - **0°C 2) Characteristics of anti-salt: it&#**9;s performance in 4% salt-base mud is better than that of ferrochrome lignosulphonate (FCLS) 3) Rate of dilution: better than FCLS&#**9;s in same mud 4) It can lower the filtrate loss of mud, and has powerful-electrolytes capacity and is suitable to al kinds of muds Chrome-free lignosulphonate: Specifications: 1) Insoluble alkaline material: 2.5% max. 2) PH value of 2% water solution: 6.0 min. 3) Total CaSO4: 4.0% max. 4) Total Fe: 2.0 - 4.0% 5) Moisture content: *0.0% max. Chrome-free lignosulphonate is a drilling mud thinner produced by multi chemical reactions followed by drying of natural high molecular weight compound, organic material and harmless metal ions. The product contains no chromium heavy metal and is ideal for use in drilling at densely populated area and offshore. Thinning performance: Test results indicate the thinning performance in fresh water based mud under normal temperature is comparable to ferrochrome lignosulphonate (FCLS). At elevated temperature, it performs better than FCLS in either fresh water or salt-water based mud, particularly the later. The product is suitable for use in drilling under complex geological formation, in water with high TDS, or in offshore drilling. Good fluid loss control properties: Its major advantage is the thinning effect in drilling mud with high solid content, and simultaneously controls the fluid loss. Its fluid loss control action is better than FCLS and the mud cake formed is smooth and compressible