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Shale Inhibitors & Flocculants

SULFONATED ASPHALT

SULFONATED ASPHALT
SULFONATED ASPHALT
SULFONATED ASPHALT
SULFONATED ASPHALT
SULFONATED ASPHALT

Sulfonated Asphalt additive can be used in most water-base muds. It is a free-flowing powder and can be added directly to the mud system through the mixing hopper. It is not necessary to premix Sulfonated Asphalt inhibitor with oil. It contains no surfactants.

PRODUCT DESCRIPTION

 

 
Sulfonated Asphalt is a partially water-soluble, water dispersible shale inhibitor. 
 
It is used to aid in stabilizing shale sections, controlling solids dispersion and improving wall-cake characteristics. It is also used as a supplemental high-temperature fluid-loss additive for 
water-base drilling fluid systems. 
 
Typical Physical Properties 
 
Physical appearance      Fine black/gray powder 
Odor          Mild sulfur 
Specific gravity      0.90 – 0.96 @ 77° F 
pH          > 8.5 
Solubility in water      71% soluble in water @ 72° F 
 
Applications 
 
Sulfonated Asphalt additive can be used in most water-base muds. It is a free-flowing powder 
and can be added directly to the mud system through the mixing hopper. It is not necessary to 
premix Sulfonated Asphalt inhibitor with oil. It contains no surfactants. 
 
Normal concentrations of Sulfonated Asphalt additive range from 3 to 6 lb/bbl (8.6 to 17.1 
kg/m3) for shale stabilizing control and 6 lb/bbl (17.1 kg/m3) for high-temperature fluid-loss 
control. 
In water-base drilling fluid systems, Sulfonated Asphalt inhibitor exhibits the following 
characteristics: 
 
• Stabilizes shales 
• Lowers torque and drag 
• Reduces high-temperature fluid-loss 
• Produces thin-walled filter cakes 
• Improves borehole stability 
 
Advantages 
 
• Easy to handle and mix 
• Plugs micro-fractures and seals shales 
• Inhibits swelling and water-wetting of shales 
• Reduces high-pressure, high-temperature (HPHT) fluid-loss 
• Reduces torque and drag 
• Improves filter-cake quality 
• Increases drilling-fluid lubricity 
 
Limitations 
 
• Not recommended for use in non-aqueous fluids. 
 
Toxicity and Handling 
 
Bioassay information is available upon request. 
Handle as an industrial chemical, wearing protective equipment and observing the precautions 
described in the Material Safety Data Sheet (MSDS). 
 
Packaging and Storage 
 
Sulfonated Asphalt inhibitor is available in 50 lb (22.7 kg), multi-wall sacks; 50 sacks per shrink- 
wrapped pallet. 
Store in a dry, well-ventilated area. Keep container closed. Store away from incompatibles. 
Follow safe warehousing practices regarding palletizing, banding, shrink wrapping and/or 
stacking.