Sodium Asphalt Sulfonate is partially water-soluble and water-dispersible. It acts to aid in stabilizing shale sections, controlling solids dispersion, and improving wall cake characteristics. Unlike some other blending Gilsonite, it is highly sulfonated by a unique process which leads to partial oil-soluble as well. This property gives more excellent emulsifying characteristics. It is also highly resistant to temperature.
Sodium Asphalt Sulfonate stabilizes shale formation by inhibiting the disintegration of the shale both chemically and physically. It inhibits the dispersion of drilling cuttings, controls high-temperature high pressure (HTHP) filtration. It reduces torque and drag, prolongs the life of the bit, improves filter cake quality, and enhances well productivity. It also acts as an emulsifier of diesel oil.
Emulsify freshwater or seawater with oil depress the solid expansion of drill chip, control HTHP FL, produce thin and tenacious mud cakes, help to maintain low shearing rate under THE, clean and stabilize well holes that have a great deal of collapsing shale.
Stabilize shale stratum
Reduce rotative torque and prevent jamming
Substitute of oil, includes crude oil, waste engine oil, and diesel oil
Depress the solid expansion of drill chips
Produce thin and tenacious mud cakes
Help maintain low shearing rate under HTHP
Clean and stabilize well holes that have a great deal of collapsing shales.