Polyanionic Cellulose PAC - LV

Polyanionic Cellulose PAC - LV 1. Product Description Chemical Name Polyanionic Cellulose (PAC), a cellulose derivative. Chemical Structure It has anionic features, coming from its unique structure. Appearance Appears as white or light - yellow powder. Characteristics It's a top - notch fluid loss reducer. Reduces drilling fluid's fluid loss, stabilizes wellbores, and improves drilling fluid's flow properties. Action Mechanism Adsorbs on clay particles, forming a stable colloid to cut down filtrate entering the formation. 2. Performance Indicators â?¢ Viscosity: 500 - 2000 mPa�·s in 1% aqueous solution. â?¢ Fluid Loss: Greatly decreases API fluid loss, often < 10 mL/30 min. â?¢ Temperature Resistance: Good heat tolerance, suitable for â?¥ 90�°C medium - temp settings. â?¢ pH Value: Aqueous solution is neutral to weakly alkaline (pH 7 - 9). â?¢ Solubility: Soluble in water, forming clear or slightly cloudy solutions. â?¢ Environmental Friendliness: Non - toxic, pollution - free, meeting green standards. 3. Scope of Application Drilling Fluid System Works for water - based drilling fluids. Geological Conditions Suits medium - deep and deep wells, plus complex formations like mud shale and sandstone. Temperature Range Applies to medium - temp environments (â?¥ 90�°C). Application Scenarios Used in land & offshore drilling, medium - deep and deep well operations, and drilling in complex formations. 4. Usage and Dosage Usage â?¢ Direct Addition: Slowly add PAC - LV powder to drilling fluid and stir well for even spread. â?¢ Premix Dissolution: Dissolve it in a bit of water first, then add the concentrate to the drilling fluid. Dosage â?¢ Regular Dosage: Recommended 0.1% - 0.5% (by weight) of total drilling fluid. â?¢ High Fluid Loss Conditions: Can increase to 0.5% - 1% in such cases. â?¢ Dynamic Adjustment: Adjust dosage based on downhole factors like rock type, temp, and pressure. 5. Application Scenarios Mud Shale Formations Reduces fluid loss and stabilizes wellbores during drilling. Medium - Deep and Deep Wells Keeps drilling fluid stable. Complex Formations Prevents wellbore collapse and high fluid loss in sandstone and mudstone. High - Environmental - Requirement Areas Suitable for offshore drilling and eco - sensitive zones due to its green nature. 6. Advantages â?¢ High - efficiency Fluid Loss Reduction: Cuts fluid loss, stabilizes wellbores. â?¢ Rheology Improvement: Optimizes drilling fluid flow, boosts drilling efficiency. â?¢ Environmental Safety: Non - toxic, pollution - free. â?¢ Strong Adaptability: Works in various drilling and geological settings. â?¢ Cost - effective: Small dosage, big effect. 7. Precautions Solubility Make sure PAC - LV fully dissolves to avoid clumping or high local concentration. Compatibility Good with other additives, but test first. Storage ConditionsStore in dry, ventilated places, away from moisture and heat. Safe Operation Wear gloves and masks to avoid skin and eye contact.