, Vol. V, No. 4, July-August, 2014

Hernández-Valdés

Figure 4. Percentage values for the transmissivity correlation factor with specific capacity for the 90

samples from Table 3.

Table 4. Wells from Table 3 with at least one satellite well.

94

27 902 0.25 and 23.3 3 049

124

54

517

455

*Partial penetration

= 0.92

89

27 112

0.2 and 100 1 250

162

27.4

989

670

*Partial penetration

= 0.8

1160 12 482

0.25 and 15 2 538

80

40

311

335

Ok

22

11 330

0.2 and 60

1 920

72.6

31.16

363

364

Ok

966

2 900

,

and 60 823

79

12.2

237

295

Calculation error for

15

373

0.2,

120

224

1.65 0.438 226 851

883

Inadequate

valueo

*The calculated values of the partial penetration were obtained by applying Factor

(20).

Hernández-Valdés (2008) and the pumping

data are graphically shown.

This pumping test was conducted with

a flow volume of 26 lps in a 40 cm diameter

well and the drawdown was measured in

two satellites located 9.7 and 15 m from the

pumping well, respectively.

The procedure described by Cooper and

Jacob (1946), cited by Todd (1959) is followed,

obtaining the slope per

D

10

cycle from the

graphic representation of

log(

) and then

determining

using the following expression:

=

0

183

10

=

0

183 26 86

4

1

1

=

373

2

Since the fitted lines in the semi-logarithmic

graphs in the previous section should be

parallel, the difference in drawdown among

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