Ground water well dimensioning procedure

Details Ground water well dimensioning procedure Ground water well dimensioning procedure

E - Fixed Constructions

03

B

73/124

E03B 3/08 (2006.01) E02D 19/10 (2006.01) E21B 49/08 (2006.01)

Patent

CA 1269865

ABSTRACT OF DISCLOSURE The present invention concerns the dimensioning of a ground water well by investigating the yield characteristics of the ground water region. The object is, with the aid of the invention to obtain as correct data as possible for ground water well dimensioning, espe- cially when the water supply of a habitation centre or of an indus- trial plant is concerned. The initial exploration undertaken in the ground water area for well dimensioning purposes consists of pump- ing runs with an observation tube in the manner of stepwise pump- ing, using short time intervals (15 seconds to 20 minutes), and measuring the hydrostatic height of the water. In this way one finds the yield as a function of the level drop. The yield of a well, compared with the yield of the observation tube, is found from the ratio of the strainer sections of well and observation tube, potentially with correction using an empirical factor due to the different size of the strainers. In the case of ground water deposits at very great depth, the yield may be explored by an inverted method in that water is pumped into the ground and the hydrostatic pressure is measured with different pumping rates.

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