Environmental Engineering Reference
In-Depth Information
FIGURE 5.1
The constituents ofreservoir oil.
Here,
m
u
∋
- reserves of reservoir oil at reservoir conditions;
M
B
- Mass of wa-
terinthe reservoirareadrained by the end of development,
t
;
w
- watering at the
end of development, the proportion of units;
m
Π
-Mass of mobile oil,
t
;
m
u
∋
- Mass
of extracted oil,
t
;
m
H
∋
-Mass of the non-removable movable oil, non-removable
t
;
m
c
- Mass of the adsorbed and structured oil
t
;
m
Д
- Mass of oil remaining in
pillars,
t
.
The mobileoil (
m
Π
) is part of the reservoir oil moving along layer due to the
impact of external influences.
Recoverablemobile oil (
m
u
∋
) is certain part of the mobile oil, which can be ex-
tracted from the reservoir as a result of industrial activity with taking into account
of economic and technological limitations.
Non-removablemobileoil (
m
H
∋
) is part of the mobile oil, which will not be
extracted from the reservoir using the technologies as a result of industrial activity
on the economic and technological constraints.
The residual oil (
m
) is part of the reservoir oil, located in the reservoir at the
end of the displacement.
Motionless oil (
m
H
) is part of the reservoir oil, remaining motionless in the
reservoir due to external influence.
Sorbed and structured oil (
m
c
) is part of motionless oil, retained near the sur-
face of the collector by the intermolecular interaction.
Oil remaining in pillars (
m
Д
) is part of motionless oil, is not involved in the
process of drainage.
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