Page 32 - Fundamentals of Reservoir Engineering

CONTENTS XXXII

d(HCPV) = − (c w V w + c f V f ) ∆p (1.38) 26

G p (c S wc + c ) p E
∆
f
w
G = 1− 1 − 1 S wc E i (1.39) 27
−
Production = GIIP − Unproduced Gas
(sc) (sc) (sc) (1.40) 29
G
G p = G − − W E
e
E i
p p G p WE (1.41) 29
i
e
i
Z = Z i 1− G 1− G
G p
G = (1.42) 31
a
1 − E /E i
G — W e E
p
G = (1.43) 31
1E /E i
−
WE
G = G + e (1.44) 31
a
1 − E /E i
dp
p = p g GWC − dD GWC × ∆ D (1.45) 34

p
Z = (1.46) 40
2 phase
−
p G ' p
i
Z i 1− G
scf rb
(R R ) × B g = (R R ) B g (rb. free gas / stb) (2.1) 48
−
−
−
s
s
stb scf
(Underground withdrawal)/stb = B o + (R − R s) B g (rb/stb) (2.2) 48
rb 1
B g = (2.3) 48
scf 5.615E
y
x(B + ( − R )B ) rb / day (2.4) 50
g
o
s
x
v rb
v o (rb/ rb b) B o B o = o (2.5) 63
c
f b stb
5.615 F rb

F (stb/rb b) R s R s = R si f − c b f stb (2.6) 63

1 rb
E (scf/rcf) B g B = (2.7) 63
g
5.612 E scf