1. potassium sulfonated asphalt 2. HTHP FL controller 3. environmentally friendly 4. reduce rotative torque and prevent jam oilfield drilling fluid additive1. PropertyIt's a proven extensively used 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 0.98g/cm3. It's partly water soluble ...
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