Product Description
Baraflc 903 is a high-performance sulfonated asphalt derivative designed for use as a versatile and economical WBM inhibiting asphalt additive. It functions effectively in both water-based and oil-based drilling fluid systems to enhance wellbore stability and improve filtration control. Its unique composition allows it to form a thin, tough, and flexible filter cake that effectively bridges micro-fractures and pore throats in the formation. This WBM inhibiting asphalt additive significantly reduces fluid invasion, prevents shale hydration and dispersion, and mitigates borehole sloughing.
With operational stability maintained at temperatures exceeding 400°F (204°C) and strong tolerance to common drilling contaminants, this WBM inhibiting asphalt additive serves as a reliable high-temperature fluid-loss reducer and shale stabilizer across a wide pH range. The sulfonation process enhances its water dispersibility while maintaining the inherent sealing properties of asphalt, making it particularly effective in inhibiting water-sensitive shale formations.
Applications/Functions
Controls high-pressure, high-temperature (HPHT) fluid loss in freshwater, seawater, and saturated brine mud systems
Inhibits reactive shale formations through ionic exchange and physical sealing
Reduces cuttings erosion and improves wellbore stability
Enhances lubricity in deviated and extended-reach wells
Improves overall filter cake quality and reduces differential sticking
Functions as a high-temperature fluid-loss agent in challenging drilling environments
Stabilizes wellbores in interbedded formations with varying shale content
Advantages
Thermally stable beyond 400°F (204°C)
Effectively reduces shale sloughing and hydration
Enhances lubricity in both water-based and oil-based fluids
Disperses readily in aqueous and non-aqueous fluids
Exhibits low, easily identifiable fluorescence
Forms a thin and impermeable filter cake
Resistant to salt, calcium, and other common contaminants
Cost-effective solution for wellbore stabilization
Technical Mechanism
The additive functions through multiple mechanisms including electrostatic attraction to clay surfaces, physical bridging of microfractures, and formation of a hydrophobic barrier that prevents water invasion. The sulfonated groups provide enhanced shale inhibition through ionic interactions, while the asphalt base creates a flexible seal that adapts to wellbore conditions.
Typical Properties
Appearance: Dark brown to black free-flowing powder
Specific Gravity: 0.98
Bulk Density: 0.6-0.8 g/cm³
Moisture Content: ≤ 5%
Particle Size: 90% passing 200 mesh
pH (1% suspension): 7.0-9.5
Recommended Treatment
A standard treatment of 3-8 ppb is recommended for most applications. For severe wellbore instability or high-temperature conditions, dosage can be increased to 10-12 ppb. Add the product gradually during mixing to ensure uniform distribution. Conduct pilot tests to determine the optimal concentration for specific formation characteristics and drilling fluid systems.
Packaging & Storage
Available in 25 kg multi-ply paper bags with inner polyethylene lining. Store in a cool, dry environment away from direct sunlight and moisture sources. The product maintains stability for 24 months when stored under proper conditions.
