Sulfonated Asphalt Sodium were widly used as drilling fluid additive with many fine properties. Oil asphalt is basal raw material. It appears brown in easy breakable pieces or fluidized powder. Its density is 0.989g/cm3. It's partly water soluble, partly oil soluble and partly both water and oil soluble, having fine emulsifying property suitable for every kinds of drilling fluid. Our company is the first manufacturer in China.
It can emulsify fresh water or sea water with oil, depress the solid expansion of drill chips , control HTHP FL, produces thin and tenacious mud cakes, helps maintain low shearing rate under HTHP, cleans and stabilizes well holes that have a great deal of collapsing shale.