INSTITUTE  OF  PULSE  PROCESSES  AND  TECHNOLOGIES

NATIONAL  ACADEMY  OF  SCIENCE  OF  UKRAINE
© 2012  Institute of pulse processes and technologies NAS of  Ukraine.   All rights reserved.

| Institute's structures | Dept. No 43 | Water intake well treatment      
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ELECTRODISCHARGE TECHNOLOGY OF WELL-BOTTOM ZONE TREATMENT INTENDED
FOR WATER INTAKE WELLS TO INCREASE THEIR PRODUCTIVITY
THIS TECHNOLOGY realizes high-efficiency treatment of bottom-hole zones of oil, pressure, and water intake wells to increase their productivity.

PRINCIPLE OF THE TECHNOLOGY
The high-voltage pulse discharge cyclically agitates the compression waves and hydrocurrents in the well filled with fluid, destructing thus the sediments in the perforation zone, evolving the old cracks and forming the new ones in a rock, which leads to fluid shift to the active draining zone. All effects are produced by the mobile well-bottom device.

MAIN ADVANTAGES OF THE ELECTRODISCHARGE METHOD OF WELL DECOLMATATION:
          (well debit increases 2-3 times and more);
Technical characteristics
of the electrodischarge device for treatment of well-bottom zones
of water intake wells
Results
of treatment of water intake wells
in Ukraine
Parameter
Electrodischarge device
  Stored energy, J
500
  Capacitor charge voltage, V
30 000
  Pulse repetition frequency, Hz
0,25
  Power supply
3-phase voltage 380 V AC, frequency 50 Hz
  Energy consumption, kW/h
3,0
  Overall sizes of the surface part, mm
200400500
  Overall sizes of the immersion part, mm:
  • diameter
  • length in assembly


102
~ 3 200
  Weight, kg, no more than:
  • surface part
  • immersion part


20
115
                                
  Working temperature   , no more than

80
  Hydrostatic pressure, MPa, no more than
20
Well No.
Depth,
m
                   3
Water debit, m  /h
before treatment
after treatment
  Well No.34, Zaporozhskaya region
186
8,1
18
  Well No.21, Zaporozhskaya region
127
4,93
18
  Well No.10, Kherson
72
14,0
72
  Well No.14, Kherson
65
19,0
48
  Well No. 2, Kherson
72
20,0
104
  Well No. 8, Kherson
56
14,5
120
  Well No.20-12, Kherson
80
16,0
44
COMPONENTS OF THE ELECTRODISHCARGE EQUIPMENT
Optimum set of the technological equipment for the repair and treatment of the well may be realized on basis of the truck GAZ 3302 "Gazel'" and includes the following pieces: