What is Reservoir Engineering

1. Reservoir Engineering

2.  Any thing which can contain any type of
reserve in it, is called Reservoir.
 In The Petroleum Engineering, the
Reservoir is the rock that contains the
amount hydrocarbons in it.

3. Reservoir properties
 Porosity.
 Porosity is the property of reservoir rock, which is the
ratio of pore volume of the rock to the bulk volume of
the rock.
 Porosity is measured in %age, and it is represented by Ø
Phai.

4.  Permeability.
 It is the interconnection between pore spaces, through
which the fluid can move or flow.
 The unit of permeability is Darcy or mili darcy.

5. Fluid Properties
 Viscosity.
 Viscosity is the property of a fluid which resists the fluid
to flow.
 The unit of viscosity is cent poise.

6.  Formation Volume factor.
 Formation volume factor is the ratio of volume of fluid at
the reservoir condition to the volume of fluid at the
standard conditions.
 Standard conditions are 14.7 psi pressure and 60F
temperature.

7.  Solution Gas Oil Ratio.
It is the no. of standard cubic feet of the gas, dissolved in a
stock tank barrel of oil.
Under the reservoir conditions, the gas is dissolved in oil.

8.  Bubble Point Pressure.
 This is the pressure at which the first bubble of gas is
liberated from oil.
 When the reservoir pressure is reduced, the dissolved
gas starts to escape from oil.

9. Drive Mechanisms
 1, water drive Mechanism
 2, Gas Cap Drive Mechanism
 3, Expansion Drive Mechanism
 4, Combination Drive Mechanism
 5, Rock expansion Mechanism