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  • Name:FF-II Cationic Asphalt Powder
  • ID:cp515
  • AddTime:2019-06-24
  • Hits:528
Product Detail

Product Description

FF-II is compounded by natural asphalt and composite surfactant. Because it is manufactured with a special process, the contained asphalt is far higher than sulfonated asphalt and emulsified asphalt. Therefore, it has a good sealing effect.

FF-II dispersing in the drilling fluid can adsorbed on the surface of the shale to form a thin and tough, hydrophobic film with small permeability; Moreover, the dispersing FF-II can also block the throat and micro-fracture under the action of the differential pressure. Therefore, it can prevent the filtrate from invading into formation. Cationic group of FF-II has good inhibitory effect, so it can effectively prevent shale from hydration swelling or peeling off the wall and stabilize the borehole. Its common dosage is 3.5 - 10.5ppb.


Technical Specification




Black or brown free-flowing powder

Volatile Content, %


Water soluble rate, %


Oil soluble rate, %


Reduction rate of FLHTHP (150℃/3.5MPa), mL





Reasonable water dispersibility without flocculation and floating phenomena.

Reasonable shale inhibition and sealing property.

Increase viscosity slightly, so it’s suitable for building high density drilling fluids.

Perform well up to 220 ℃, so it can be applied to high-temperature deep well drilling fluids.

Resist salt and calcium, can be applied in various freshwater, saltwater, seawater and saturated saltwater drilling fluids.


Package and Storage

They shall be packaged in 25kg multi-wall paper sacks. They shall be stored in a shady, dry, and ventilated place.



They shall be avoided contact with eyes, skins and clothes, otherwise flush it with water. Handling methods and dangerous data shall be referred to MSDS.