ELECTROHYDRO SHOCK TECHNOLOGY

Technology «clearing of a well»

Problem:

Productivity of borehole got reduced as a result of reduction of drift diameter of pipe, plugging of perforations or filters .

The decision:

• In the borehole is lowered the equipment which stores energy, produces discharge and powerful shock wave in very short time.
• On the surface is mounted the power supply for a charging the energy storage unit which is located in the borehole.
• The power supply charges the energy storage unit.
• After achievement of the specified level of charging, discharging takes place in the pressure circuit .
• In the discharge channel the energy reaches 100-1000 Joules.
• The shock wave has abrupt front and large amplitude.
• The shock wave cuts away fragile and firm deposits from the wall of pipe (different elasticity coefficients ).
• Cleaning of walls from hard deposits takes place.
• In proportion to cleaning the equipment is lifted upwards.
• Speed of cleaning is 1-3 meters per minute.

Technology «clearing of the equipment»

Problem:

Drift diameter of pipe is decreased, heat exchange is decreased

The decision:

• The pipe being cleaned is filled with water.
• Into a pipe is introduced a discharge cable at whose end is formed powerful discharge (shock wave) in very short time.
• Nearby is installed the power supply which forms powerful signal.
• After achievement of the specified level of charge, discharging takes place in the pipe.
• The frequency of discharging is controlled from 1 to 10 Hertz.
• In the discharge channel the power reaches 100-2000 Joules.
• The shock wave has abrupt front and large amplitude.
• The shock wave cuts away fragile and firm deposits from the wall of a pipe (different elasticity coefficients).
• Cleaning of walls from hard deposits takes place.
• In proportion to cleaning the cable is stretched upwards.
• Speed of clearing is 1-5 meters per minute.

Technology «Clearing of solid deposits from inner surfaces of metal pipes»

Onshore:	Bore Hole:
The equipment is intended for cleaning solid deposits, scales , rust and other contaminations from the following: Heat-Exchanger Boilers Evaporators Heaters of fuel Sites of the main pipelines Systems of heating and water supply Shut-off valves from industrial contaminations Drainage systems and filters Sewer pipes of industrial effluents And other equipment	The equipment is intended for cleaning of solid deposits, incrustation, rust and other contaminations of : Sites of boreholes for water extraction Sites of boreholes for extracting gas condensate Sites of boreholes for oil extraction And other equipment

Technology «Cleaning of solid deposits from internal surfaces of metal pipelines»

Power supply: 5 kW Voltage 220V Output Voltage 10 kV Adjustment of voltage and frequency. The control of a current, voltage and frequency. Automatic protection against overloads.
Discharge (working) cable Length 12-15 m Thickness 7-9 mm Section of a conductor 2,0 mm2
Diameter of pipes being cleared : From 7 mm to 250 mm Speed of clearing of 1-5 m/minutes

The layer of scale which is covering the heating surface, reduces rate of heat transfer between water and gases, that as a result causes the over-expenditure of fuel. On fig. 1 influence of thickness of layer of scale on the over-expenditure of fuel is shown. It is known, that 5 mm of a scale leads to the over-expenditure of up to 30 % of thermal energy, and 10 mm – raise its expenditure twice.

Fig. 1. Dependence of the over-expenditure of fuel on thickness of scale layer .

Fig. 2. Scale thickness & thermal conduction influence on pipe wall temprature.

Contamination of heating surface of boiler from the water side, raises the temperature of wall water or smoke or flue tubes, where the rise in temperature of wall will be as much more, as the thickness scale layer and as much less as the coefficient of heat conductivity (λнак). On fig. 2, as an example, change of temperature of wall of the water-wall tube located in the combustion chamber (1100°С) depending on heat conductivity of a scale and its thickness is shown.