1. The document discusses electrical submersible pumps (ESPs), which are pumps used to lift fluid out of wells. An ESP has a hermetically sealed motor attached directly to the pump body, allowing the entire assembly to be submerged. 2. ESPs work by using an impeller and diffuser to convert the rotational energy of the motor into kinetic and pressure energy in the fluid. The impeller spins and adds energy to the fluid, while the stationary diffuser converts this energy into fluid pressure. 3. The main components of an ESP system are the downhole components of the motor, seal, pump and cable, as well as the surface components of transformers, motor controllers, and a junction box

1. Instructor: Dr. MOHAMMED ABDUL AMEER ALHUMAIRI
MISAN UNIVERSITY
COLLEGE OF ENGINEERING – PETROLEUM DEPARTMENT
PRODUCTION ENGINEERING II
dr.alhumairi@uomisan.edu.iq

2. Electrical Submersible Pump
ESP

3. A submersible pump (or sub pump, electric submersible pump (ESP)) is a
device which has a hermetically sealed motor close - attached to
the pump body. The whole assembly is submerged in the fluid to be
pumped.
Electrical Submersible Pump ESP

4. How does a submersible pump work:
A submersible pump pushes oil to the surface by converting rotary energy
into kinetic energy into pressure energy. This is done by the oil being pulled
into the pump. first in the intake, where the rotation of the impeller pushes
the oil through the diffuser
Electrical Submersible Pump ESP
IMPELLER
DIFFUSER

5. DIFFUSER
The diffuser is stationary and its function is to allow the fluid to flow efficiently from
one impeller to another. Also, it's at the diffuser where the kinetic energy (velocity)
is converted into potential energy (pressure)

6. IMPELLER
The fluid flows into the impeller, in the form of velocity, the fluid is centrifuged radially
outward in the impeller passageway. Once it exits the impeller, the fluid makes a turn and
enters the diffuser passageway.

7. DIFFUSER & IMPELLER - PUMP STAGE

8. • The diffuser does not rotate, it turns the
fluid up into the next impeller.
• It transforms the fluid velocity, the fluid
energy, into head.
• Diffuser redirects the fluid up into the next
impeller and turns fluid energy into head.
• Impeller spins and gives energy to fluid
which exits around the outside.
• Diffuser directs fluids into the eye of the
nest impeller (next stage )
One stage

9. Electrical Submersible Pump ESP
The Parts of Submersible Pump.
The submersible pump system consists of both DOWNHOLE and
SURFACE COMPONENTS.
The main surface components are:
transformers. Motor. Controllers. junction box. wellhead.
The main downhole components are:
Motor. Seal. Pump. cable.

10. Stage two
Stage one

11. Pump Stage Characteristics
The Pump Characteristic Curves can be defined as 'the graphical representation of a
particular pump's behavior and performance under different operating conditions'. The operating
properties of a pump are established by the geometry and dimensions of the pump's impeller and casing.

12. What is pump characteristic curve?
The pump characteristic curves can be defined as “ The graphical representation of
a particular pump's behavior and performance under different operating conditions”.
The operating properties of a pump are established by the geometry and
dimensions of the pump's impeller and casing.

13. Pump Stage
Fluid Reservoir
How to draw the simple head against flow rate

14. Fluid Reservoir
Head (Lift)
1
How to draw the simple head against flow rate

15. PUMP STAGE CHARACTERISTICS
Head
-
(Ft)
0
10
20
30
40
50
60
1
Rate (BBL/day)
Single stage performance for a given RPM and fluid viscosity
500
1000
1500
2000
2500

16. Fluid Reservoir
Head (Lift)
1
2
Q1
How to draw the simple head against flow rate

17. 1
PUMP STAGE CHARACTERISTICS
Head
-
(Ft)
0
10
20
30
40
50
60
Rate (BBL/day)
500
1000
1500
2000
2500
2

18. Head
1
2
3
Fluid Reservoir
Q3
How to draw the simple head against flow rate

19. 1
PUMP CURVE
Head
-
(Ft)
0
10
20
30
40
50
60
Rate (BBL/day)
500
1000
1500
2000
2500
2
3

20. Fluid Reservoir
Stages Calculation
2000 ft
Example using the head vs.
Flow rate curve
Lift required 2000 ft
Q 600 bbl/d
Evaluate the total Number of
stages need to be used.

21. STAGE PERFORMANCE CURVE
Lift 2000 ft , Qo= 600 bbl/d
Evaluate the total Number of stages
to be used.
from the performance curve Each stage
lift 40 ft.
0
10
20
30
50
60
0 200 400 600 800 1000
40
Head
-
(Ft)
Rate (BBL/day)
No. Of stages = Lift head/ stage head
No. Of stages = 2000 ft/ 40 ft = 50 stages

22. Fluid Reservoir
Stages Calculation
2000 ft
Q 600 bbl/d

23. The Best Efficiency Point ( BEP)

24. END