FIELD: water supply systems, particularly to clean well screens of plugging particles and substances, for instance for water intake wells.
SUBSTANCE: method involves arranging electrode of conducting material inside well; passing current through electrode, well wall and well screen so that well wall and screen are used as anode, electrode is used as cathode. Sign-alternating electric current pulses are applied to cathode and anode for mud removal from screen walls. Constant current is simultaneously supplied to move cations present in well fluid, to cathode and fluid pH reduction in screen zone.
EFFECT: increased efficiency of screen pore cleaning, decreased material consumption and costs, prevention of well screen damage.
5 cl, 1 dwg, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| WELL PRODUCTIVITY RECOVERY METHOD | 2014 |
|
RU2560459C1 |
| METHOD OF METAL SURFACE PROTECTION FROM CORROSION IN GROUND OR OTHER CURRENT-CONDUCTING ENVIRONMENT | 2006 |
|
RU2331719C2 |
| METHOD OF METAL SURFACE ANNTIRUST PROTECTION IN AGGRESSIVE MEDIUM | 2007 |
|
RU2377342C2 |
| PROCEDURE FOR ELECTRO-CHEMICAL TREATMENT OF PRESSURE WELLS | 2010 |
|
RU2432453C1 |
| METHOD AND DEVICE FOR INCREASING WELL OUTPUT | 1996 |
|
RU2087682C1 |
| METHOD OF INCREASE OF WELL PRODUCTIVITY | 2001 |
|
RU2211919C2 |
| METHOD INCREASING PRODUCTIVITY OF HYDROGEOLOGICAL WELLS AND GEAR FOR ITS IMPLEMENTATION | 1997 |
|
RU2120031C1 |
| METHOD OF RECOVERY AND MAINTENANCE OF WELL PRODUCTIVITY | 2002 |
|
RU2215126C2 |
| METHOD OF INCREASING PRODUCTIVITY OF WELLS EQUIPPED BY SUCKER-ROD PUMPS | 1998 |
|
RU2153063C1 |
| DEVICE FOR CLEANING FILTER PIPE OF WELL | 0 |
|
SU977712A1 |
