FF-II is compounded by natural asphalt and composite surf ants. Because it is manufactured with a special craft, the contained asphalt is far higher than suffocated asphalt and emulsified asphalt. Therefore, it has a good sealing effect. Technical Specification
Items Specification
Appearance Black powder
Moisture，% ≤10
Oil Soluble Rate，% ≥35
HTHP（150℃/3.5MPa） Fl, mL ≤30
Permeability of Mud Cake，um2 ≤5×10-6
Features
It can be effectively dispersed in water without flocculation and floating phenomena. It has excellent shale inhibition for the insoluble asphalt 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, under the action of the pressure difference the dispersing asphalt can also block the pore and micro-cracks, therefore it can prevent the filtrate from invading into formation. Cationic group has good inhibitory effect for it can
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Trade Leads Directory -> All Trade Leads -> Chemicals -> Chemical Additives -> Shale inhibitor sulfonated asphalt for drilling fluid
