API-Grade Fluid Loss Control Additive for Drilling Fluids
Product Overview
Polyanionic Cellulose (PAC) is a high-performance water-soluble polymer widely used as a fluid loss control agent and viscosity modifier in water-based drilling fluids (WBM).
It is designed to:
- Reduce API filtration loss
- Improve wellbore stability
- Enhance rheology control
- Maintain performance in high salinity environments
PAC is fully compatible with modern drilling systems including deep wells, offshore drilling, and horizontal directional drilling (HDD).
API & Industry Standards Compliance
Our PAC products are manufactured in compliance with international oilfield standards:
API Standard Compliance
- API Spec 13A (Drilling Fluid Materials)
- OCMA DFCP (Oilfield Chemical Manufacturers Association standards)
Performance Classification
- PAC LV (Low Viscosity Grade)
- PAC HV (High Viscosity Grade)
Key API Performance Requirements
| Parameter | PAC LV | PAC HV |
|---|---|---|
| API Filtration Loss | ≤ 16 mL | ≤ 23 mL |
| Apparent Viscosity | Low | High |
| Solubility | ≥ 95% | ≥ 95% |
Technical Specifications
Physical & Chemical Properties
| Property | Specification |
|---|---|
| Appearance | White to off-white powder |
| Purity | ≥ 90% |
| Moisture | ≤ 10% |
| pH (1% solution) | 6.0 – 8.5 |
| Degree of Substitution | ≥ 0.80 |
| Particle Size | 80–120 mesh |
Rheology Performance Indicators
| Parameter | Function |
|---|---|
| Apparent Viscosity | Improves carrying capacity |
| Plastic Viscosity | Controls flow resistance |
| Yield Point | Enhances cuttings suspension |
| Gel Strength | Prevents solids settling |
Product Grades
PAC LV (Low Viscosity)
- Designed for low-solid drilling systems
- Excellent fluid loss control
- Minimal impact on rheology
Applications:
- Deep well drilling
- Low solid mud systems
PAC HV (High Viscosity)
- Strong viscosity enhancement
- Improved cuttings suspension
- Better hole cleaning ability
Applications:
- Horizontal drilling
- High solids mud systems
- Complex geological formations
Application Areas
PAC is widely used in the following drilling environments:
- Oil & gas drilling
- Offshore drilling platforms
- Horizontal directional drilling (HDD)
- Mining exploration drilling
- Geothermal well drilling
- Deep water and high-pressure wells
How PAC Works in Drilling Fluids
PAC improves drilling fluid performance by forming a thin filter cake that reduces fluid loss and stabilizes the wellbore.
Key functions:
- Fluid loss control
- Borehole stabilization
- Shale inhibition support
- Improved drilling efficiency
Compatibility & System Integration
PAC is highly compatible with most drilling fluid additives:
Compatible Materials:
- Xanthan Gum (XC Polymer)
- Bentonite
- Starch derivatives
- CMC (Carboxymethyl Cellulose)
- PHPA (Partially Hydrolyzed Polyacrylamide)
System Compatibility:
- Freshwater mud systems
- Saltwater / brine systems
- KCl polymer mud systems
- High-density drilling fluids
Recommended Dosage
Typical dosage depends on drilling conditions:
| Application | Dosage |
|---|---|
| Fluid loss control | 0.2% – 0.5% |
| Viscosity adjustment | 0.3% – 1.0% |
| High salinity systems | 0.5% – 1.2% |
Optimal dosage should be determined via laboratory mud testing.
Drilling Conditions Performance
PAC performs effectively under complex drilling environments:
- Temperature resistance: up to 120°C
- Salt resistance: high salinity tolerance
- pH stability: 6–10 range
- Shear stability: excellent under circulation
Packaging & Storage
Packaging Options:
- 25 kg kraft paper bags (standard)
- 500 kg / 1000 kg jumbo bags (bulk export)
Storage Conditions:
- Store in cool, dry environment
- Avoid moisture exposure
- Shelf life: 24 months
Drilling Fluid System Optimization
PAC plays a key role in optimizing modern drilling fluid systems:
Benefits in Mud Systems:
- Reduces overall fluid loss cost
- Improves rate of penetration (ROP)
- Enhances wellbore stability
- Minimizes formation damage
System Optimization Strategy:
- Combine PAC LV + PAC HV for balanced rheology
- Use with Xanthan Gum for suspension performance
- Adjust dosage based on salinity and temperature
FAQ
Q1: What is the difference between PAC LV and PAC HV?
PAC LV focuses on fluid loss control, while PAC HV provides higher viscosity and suspension capability.
Q2: Can PAC be used in saltwater drilling?
Yes. PAC has excellent salt resistance and performs well in brine-based systems.
Q3: What is PAC’s main function in drilling mud?
It primarily reduces filtration loss and improves wellbore stability.
Q4: Is PAC compatible with CMC?
Yes, PAC and CMC are often used together for optimized rheology and fluid loss control.
Q5: What is the recommended storage condition?
Keep in dry, ventilated conditions away from moisture and direct sunlight.
13. Why Choose Our PAC
- Stable API-grade quality
- Consistent viscosity performance
- Strong salt & temperature resistance
- Export-ready packaging
- Customized grades available (LV / HV)
- Suitable for global oilfield standards
