Sulfonated Asphalt
Shale Inhibitor & HT Filtration Control Agent
Product Description
It is a sodium asphalt sulfonate made water soluble by a unique sulfonation process. It is a versatile, total mud conditioner that stabilizes shale formations, significantly increases lubricity and lowers HTHP filtration volume. It enhances filter cake properties in both oil and water based drilling fluids.
It can be used in most water based and all oil based and synthetic drilling fluids.
  • Controls water and oil solubility to effect best chemical and physical performance
  • Minimizes damage to productive formations
  • Reacts with shale to prevent or stop sloughing and swelling
  • Significantly increases lubricity; either alone or synergistically with small amounts of oils and synthetics
  • Environmentally acceptable
  • Extremely temperature stable
  • Inhibits dispersion of drilled solids
  • Minimal and easily distinguishable fluorescence
  • Will not leave oil slick, sheen or rainbow on water at offshore locations
  • No emulsifiers needed to ensure proper mixing
Technical Data
Properties Value
Physical appearance Fine black/gray powder
Odor Mild sulfur
Specific gravity 0.90 – 0.96 @ 77° F
pH > 8.5
Solubility in water (%) Min 71 % @ 72° F
Recommended Treatment
Conventional hopper when chlorides do not exceed 60,000 ppm. When adding to high salinity systems, SAS with fresh water by adding through chemical barrel may give best results.
Transportation of commodity name is not restricted by international regulatory agencies.
Safe Handling Recommendations
Utilize normal precautions for employee protection when handling chemical products. Use of standard PPE is recommended for employee comfort and safety. See Material Safety Data Sheet (MSDS) prior to use.
Package and Storage
25kg bags or according to customer's requirement.
Avoid high-intensity extreme pressure and prolonged exposure to strong sunlight. Keep container closed. Keep away from heat, sparks and flames.