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Below includes PAC-LV and PAC-HV full TDS in Chinese & English.
Polyanionic Cellulose (PAC) is a water‑soluble anionic cellulose ether widely used as filtrate reducer and rheology modifier in drilling and completion fluids. PAC is divided into PAC-LV (low viscosity) and PAC-HV (high viscosity) types.
聚阴离子纤维素（PAC） 是一种水溶性阴离子纤维素醚，主要用作钻井液和完井液的 降滤失剂 和 流变调节剂，分为 PAC‑LV（低黏度级） 与 PAC‑HV（高黏度级）。
PAC‑LV (Low Viscosity | 低黏度级)：强降滤失、不显著增加体系黏度。
PAC‑HV (High Viscosity | 高黏度级)：同时提供粘度和降滤失能力。
Item 项目 | Specification 指标 |
Appearance 外观 | Free‑flowing white or light‑yellow powder 自由流动白色或淡黄色粉末 |
Purity 纯度 (%) | ≥ 98 |
Moisture 水分 (%) | ≤ 8 |
pH (1% solution) | 6.0 – 8.5 |
Apparent Viscosity 表观黏度 (mPa·s, 1% solution) | 30 – 100 |
API Fluid Loss API 滤失量 (mL) | ≤ 16 |
Particle Size 粒度 (40 mesh) | ≥ 95% through |
Solubility 溶解性 | Completely soluble in cold water 可冷水速溶 |
Item 项目 | Specification 指标 |
Appearance 外观 | Free‑flowing white or light‑yellow powder 自由流动白色或淡黄色粉末 |
Purity 纯度 (%) | ≥ 98 |
Moisture 水分 (%) | ≤ 8 |
pH (1% solution) | 6.0 – 8.5 |
Apparent Viscosity 表观黏度 (mPa·s, 1% solution) | ≥ 350 |
API Fluid Loss API 滤失量 (mL) | ≤ 23 |
Particle Size 粒度 (40 mesh) | ≥ 95% through |
Solubility 溶解性 | Completely soluble in cold water 可冷水速溶 |
Excellent salt tolerance | 优异的耐盐性
Strong fluid‑loss reduction | 强效降滤失能力
Good thermal stability | 良好的热稳定性
Improves rheology (HV) | 改善流变性能（适用于 HV）
Rapid cold‑water dissolution | 冷水中快速溶解
Stable in pH 6–11 | pH 6–11 范围内性能稳定
Application 应用 | Dosage 加量 |
Drilling Fluids 钻井液 (PAC‑LV) | 0.2% – 1.0% |
Drilling Fluids 钻井液 (PAC‑HV) | 0.5% – 1.5% |
Completion Fluids 完井液 | 0.3% – 1.2% |
Salt‑water systems 盐水体系 | 0.3% – 1.2% |
Oilfield / 石油领域： - API drilling fluids API 钻井液 - Completion & workover fluids 完井/修井液 - Saltwater & brine drilling fluids 盐水/卤水钻井液 - Fluid‑loss control 降滤失剂 - Rheology modifier 流变调节剂（HV）
Other Fields / 其他行业： - Cleaning agents 洗涤剂 - Water‑based coatings 水性涂料 - Ceramic additives 陶瓷添加剂
25 kg multi‑layer paper bag with inner PE liner
25 公斤多层纸袋，内衬聚乙烯袋
Keep in cool, dry, and ventilated warehouse
储存于阴凉、干燥、通风处
Avoid moisture and sunlight
防潮、防晒
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