Friday, November 28, 2014

A survey of 182 high-pressure washed wells showed a capacity increase at an average of 220 liters p

Printing of drilled drinking water well | CijaTank
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High-pressure increases the amount of water in drilled wells Blasting in a mountain drilled well was long the only method to increase weight lifting the inflow of groundwater into the well. Sometime in the 1970s, however, weight lifting developed a method of high-pressure rinse wells to increase the well's capacity. This method proved to be effective and is commonly used today where the well's capacity is too small.
A survey of 182 high-pressure washed wells showed a capacity increase at an average of 220 liters per hour. 10% of the wells had an increase in capacity of about 1000 liters per hour, in 25% of cases the increase was less than 120 liters per hour. Other experience over a long period of high pressure flushing show similar weight lifting results.
Technique weight lifting at high pressure flushing weight lifting of a well placed a cuff at the appropriate depth. Flushing is done by means of a tank truck with spoltrycksmöjlighet of 100-120 bar. Water is pressed weight lifting into the bore in the sleeve weight lifting with a pressure varying between 50 and 100 bar. The pressure applied and unloaded repeatedly. During the flushing pressure drops often down to about 20-40 bar, which roughly corresponds to the pressure of the overlying rock. The pressure reduction is due to the emergence weight lifting of communication between the borehole and the environment by an expansion of existing cracks occur.
When flushing completed strive mountain after return to the original position, as evidenced by the pushed water normally flows out of the borehole. weight lifting Through changes in the mountain's natural weight lifting tensions remain, however normally a part of the effect, flushing generated. This is manifested by an increase of water influx into the well.
Another important effect of high pressure flushing effect on fracture fillings. One can see that the fracture weight lifting fillings removed by the usually very rich sludge water, which occurs in connection with work.
Very large forces are used in high-pressure washing. An applied pressure weight lifting of 100 bar corresponds to the pressure of 1000 m water column or pressure of about 350 m mountain. This call for reflection and caution in the use of the method.


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