Page 353 - Fundamentals of Reservoir Engineering

REAL GAS FLOW: GAS WELL TESTING 288

k = iteration
counter
k = 1

k
µ
µ
(c) = (c) i
(c) A
)
t k sss = φµ k (t DA SSS
.000264k
k

(c) = (c) k-1
µ
µ
(RE)-PLOT HORNER BUILDUP
t k +∆ t
m(p ws ) vs. log SSS
t ∆
k = k + 1

EXTRAPOLATES TO m(p*) k
* k
TO m(p )
k p k )
A
DA
MBH m(p*) m( ) = constant = m log (C (t ) SSS
k
k
p
m( ) p
k
(c) = (c) k = 1 k k > 1
µ
µ
k
p
MATERIAL BALANCE
k
p p i k
d =− Q t
1SSS
Z Z G
i
d(p )
k
k k k
p SSS − p + d(p )
(c) (c) k
k
µ
µ
p SSS

k = 2 k k > 2

+ k k-1 -
p SSS − p SSS − TOL
p k + p k-1
p =
2

10
Fig. 8.17 Iterative determination of  p in a gas well test analysis (Kazemi )