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the time of development is necessary to determine the time that is
given to the resettlement area of the building maintain formation
pressure.
Condition of elastic fluid and reservoir porosity
depending on the pressure described by the following equations
    1  fl P  P 0 , (3.23)
0
m=m 0+ r(Р-Р 0), (3.24)
- porosity and density under initial pressure;  fl -
where m 0,  0
compressibility factor of the fluid, 1/Pa;  r - compressibility
factor of the porous medium, 1/Pa. These factors are determined in
the laboratory.
From the reservoir when the pressure is reduced due to
the elastic expansion of the fluid and rocks will be released a
volume of fluid
V fl= flV pР+ rV 0P, (3.25)
but V p = mV 0 and substituting in the equation (3.25)
V fl=  fl mV 0 Р+ rV 0P=(m fl+ r)V 0 Р.
We introduce the notation
 fl m + r = β*,
β* - an elastic capacity factor of the reservoir rock, 1/Pa. It shows
the change in the stock of elastic fluid per unit volume when the
pressure of 1 MPa.
Elastic reserve reservoir
V fl=*V 0Р, (3.26)
3
where V 0 - reservoir volume, m ; Р - change in pressure, Pa.
The disadvantage of the formula (3.26) is that it is not
related to time. Therefore advisable to determine the indicators of
development will be the formula
Q   r 2  
P   Ptr, f  E i     ,


4  kh   4  t   

or

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