Page 299 - Fundamentals of Reservoir Engineering

OILWELL TESTING 235

1000
9 T = 5000 T = 2500
F F
7
6
5
4

3

2

100
9
7
6
5
4

3

MATCH POINT
∆ t 2 t = 60 mins
(mins) ∆ p = 750 psi
10 ∆
9
7
6
5
4

3

2
∆pF
q = 0.14
10 -2 2 3 4 5 6 7 9 10 -1 2 3 4 5 6 7 9 1

∆pF
q

Fig. 7.44 Match between McKinley type curves and superimposed observed buildup
(Exercise 7.9).
o − −− − match for small ∆ ∆∆ ∆t (T/F = 2500)
• • • • − −− − match for large ∆ ∆∆ ∆t (T/F = 5000)

∆ pF T ∆ pF
×
× = = 0.14 2500 = 350
q F q