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Q  Q
Q  i k  i k 1 .
2
    
t   i k  i k 1  . (3.45)
Q  b   PbP i k i k 1 
P bh const 


The total validity determined by summing validities for
intervals pressure changes
T P bh const  t P bh const .

3.3.4 Placement of wells and oil recovery under
solution gas drive

Under solution gas drive formation energy is evenly
distributed around the oil areas and depends only on the amount of
gas dissolved in a unit volume of oil. Placement of wells in the
deposit must obey the following two conditions:
1) if the permeability of the layer area will put about the
same, it is well placed for uniform grids;
2) the permeability of the layer area will put uneven,
there is an increase in the consolidation grid of wells in the side of
the layer permeability worse.
At the same formation parameters of the reservoir, as
noted above, it is advisable to place production wells on the
uniform grid, unless solution gas drive will be replaced by some
other drive. Wells in this case placed on a square or triangular
grids and formation divided into the same form of exclusion.
Dimensions of form depending on the distance between the wells.
If the distance between the wells mark 2σ, then the
square grid equivalent circle radius is
2 
R    , 1 13 
k

and triangular grid

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