Sulphonated asphalt

Sulphonated asphalt (CAS 68201-32-1), also known as sulfonated asphalt sodium salt, is a chemically modified bitumen derivative used as a shale stabilizer and fluid loss control agent in drilling operations.

Where is Sulphonated asphalt used?

• Oil and gas drilling: reduces fluid invasion into shale formations
• Drilling fluids: seals permeable formations and inhibits clay swelling
• Construction: dispersant and rheology modifier in grout and cement slurries
• Mining: lubricant additive in drill fluids for hard-rock drilling
• Road surfacing: asphalt emulsion formulations
• It prevents wellbore instability and bit balling during directional and deep-well operations.

Good to know: Moisture content and solubility in water are the primary quality parameters buyers specify during procurement.

Commercial specifications

• Standard commercial grades conform to API and oilfield industry specifications