Page 153 - A Practical Companion to Reservoir Stimulation

STIMULATION OF HORIZONTAL WELLS

curve, p~ = 1.4. Then, using Eq. 11-8 for the definition of the Then, from Eq. 19-41,
dimensionless pressure and rearrangement,
(pD),orol = pD + (s,,~)~ 1.4+0.2 = 1.6, (5-21)
=
(1) (75) (1500)
4= = 740 STB/d. (5-19) and from a simple ratio,
(1.4) (141.2) (1.1) (0.7)
(740) ( 1.4)
For the same fracture intercepted by a horizontal well, the 4= = 648STBld. (5-22)
skin effect due to the choke from the contact must be calcu- 1.6
lated. From Eq. 19-40, Figure 5-8 is a graph of the production history of the

75 - "1 fracture$ vertical well and the (orthogonally) fractured hori-
zontal well.
(&.A),. = ~ = 0.2. (5-20)
(2) (0.328) 2

1000

900

800

700

h
9 600
m
I-
2
500
400

300

200

100

0
-
0 30 60 90 120 150 180 210 240 270 300 330 360
t (days)

Figure J-8-Comparison of performance of fractured vertical well with transversely fractured horizontal well for Example J-6.

5-13