The oil well block remover (II) is mainly used to remove block in oil well and water injection well from colloidal asphalt and heavy oil sediment or metal ion precipitation in order to restore formation permeability and increase the production or water injection.
1. Typical physical properties /Technical data
(1)Appearance: brown liquid;
(2)Density:1.10~1.15g/cm3;
(3)Dispersivity: soluble in water at any rate;
(4)pH: 2~4;
(5)Performance of eliminating oil-based filter cake or scale: eliminate 50~80% within 1-2 hours.
2. Applications
(1)Remove colloidal block of water injection well and iron ion precipitate.
(2)Remove block from colloid and asphaltene, heavy oil precipitation of oil wells.
(3)Suitable for formation temperature 150℃ or less.
3. Uses
The product is mixed well in water at the ratio of 1:5 and injected into formation with the cement truck. Shut two to three hours, then flush and drain.
4. Dosages
Every meter of reservoir 2 m3 (perforation penetration).