KONTROL is a sulfonated asphalt shale stabilizer for use in water, oil and synthetic based drilling fluids. Kontrol is highly water-soluble and anionically charged and therefore a chemical treatment for shale control. The insoluble portion of Kontrol provides a physical plugging effect to control shale zones. Kontrol is also partially soluble in oil. It reduces HTHP and increases lubricity in synthetic and conventional oil muds.
Preventive chemical treatment: 6 – 11 Kg/m³
Severe sloughing shale sections: 11 – 17 Kg/m³
Appearance: Black to dark brown powder
Moisture: 10% max (wt. basis)
Specific Gravity: 0.98
Solubility: 70 ± 5% (wt.) in water
40 – 60% (wt.) in oil
pH (2% solution): 8.5