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2 kh Р  Р  
Q  f bh , (3.39)
ln R d
r r w

F   
where  oil . (3.40)
 oil     P  P  Р bh
b
Р
Р
f
2
Substituting (3.37) to (3.35) and following the integration,
we get
a
2
H  H  P  P 2  Pb  P . (3.41)
f
bh
2 f bh f bh
Solving equation (3.41) for the expression of the bottom-
hole pressure
b  b  2 2 H  H 
P  P      f bh . (3.42)
f
bh
a  a  a
The proposed methodology for determining the flowrates
at the set bottom hole pressures and determination of bottom hole
pressures at the set flowrates.

3.3.2 Definition of validities under solution gas drive

Validities for condition Q(t) = const determined by the
formula
    
t Q const   0  k  , (3.43)
P
Q  b   bP 0   
k
where Ω - pore volume per one well and determined by the
formula
2
 =R d hm. (3.44)
If the task solve for condition Р bh = const, then formulas
(3.34), (3.36) changes for each interval pressure calculated average
flowrate

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