ESP lecture #2.pdf

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. The three measured parameters of Pump stage performance are:
Lift (Head)
Flow Rate
Brake Horsepower required (or Motor Load)
From the above, Hydraulic horse power and Efficiency may be calculated and the
Formulas are:
ℎ𝑦𝑑𝑟𝑎𝑢𝑙𝑖𝑐 𝐻𝑃 =
𝑙𝑖𝑓𝑡 ( ℎ𝑒𝑎𝑑) ∗ 𝑓𝑙𝑜𝑤 𝑟𝑎𝑡𝑒 ∗ 𝑠𝑝. 𝑔𝑟
136000
Efficiency %=
Hydraulic 𝐻𝑃
Brake Horsepower(BHP)
Pump Performances

4. Example - Calculate the Hydraulic HP and efficiency for this pump, for the
given data:
Lift (Head) =42 Feet per stage
Flow Rate =4000 BPD
Brake Horsepower(BHP) or Motor Load =1.8 HP
Specific gravity of the Fluid (sp.gr.) =1.0 dimension less
Pump Performances
ℎ𝑦𝑑𝑟𝑎𝑢𝑙𝑖𝑐 𝐻𝑃 =
ℎ𝑒𝑎𝑑 ∗𝑓𝑙𝑜𝑤 𝑟𝑎𝑡𝑒 ∗𝑠𝑝.𝑔𝑟
136000
=
42 𝑓𝑡∗4000
𝑏𝑏𝑙
𝑑𝑎𝑦
∗1
136000
=1.235294 HP
Efficiency of the pump =
Hydraulic 𝐻𝑃
Brake Horsepower(BHP) =
1.235294 𝐻𝑃
1.8 𝐻𝑃
= 0.686 = 70%

5. Single Stage Performance, 3500 RPM
sp.gr. = 1.0, 60 Hertz
Also you can using the pump characteristic curves to Calculate the
ℎ𝑦𝑑𝑟𝑎𝑢𝑙𝑖𝑐 𝐻𝑃 and the efficiency.

6. Single Stage Performance, 3500 RPM
SpGr = 1.0, 60 Hertz
What is head lift and efficiency % at qo= 4000 bbl/day?

7. Single Stage Performance, 3500 RPM
SpGr = 1.0, 60 Hertz
@ 4000 BPD,

8. Single Stage Performance, 3500 RPM
SpGr = 1.0, 60 Hertz
From the curve for qo= 4000 bbl/day the head lift =42 ft/stage and 𝒉𝒚𝒅𝒓𝒂𝒖𝒍𝒊𝒄 𝐻𝑃 is 1.8
HP/stage,

9. Single Stage Performance, 3500 RPM
SpGr = 1.0, 60 Hertz
Also from the curve and for qo=4000 bbl/day, the efficiency is =70% efficient

10. PUMP APPLICATION
To determine the number of stages, and the HP required to drive them, for the following
application and data …
• Lift (‘Head’) required is =5000 Ft.
• Flow Rate =4000 BPD
• Specific Gravity =1.0
Also calculate the Lift per stage ?

11. Single Stage Performance, 3500 RPM
SpGr = 1.0, 60 Hertz
To maintain the qo= 4000 BPD, and from the pump characteristic curves the Lift per stage is =42 ft/stage.

12. Single Stage Performance, 3500 RPM
SpGr = 1.0, 60 Hertz
For qo= 4000 bb/day and for Lift per stage =42 ft/stage, the Brake Horsepower or Motor
Load per stage is 1.8 HP/stage from the curve.

13. PUMP APPLICATION
Determine the number of stages, and the HP required to drive them, for the
following application…
ℎ𝑦𝑑𝑟𝑎𝑢𝑙𝑖𝑐 𝐻𝑃 =
𝑑𝑒𝑝𝑡ℎ( ℎ𝑒𝑎𝑑) ∗ 𝑓𝑙𝑜𝑤 𝑟𝑎𝑡𝑒 ∗ 𝑠𝑝. 𝑔𝑟
136000
ℎ𝑦𝑑𝑟𝑎𝑢𝑙𝑖𝑐 𝐻𝑃 =
5000 ∗ 4000 ∗ 1
136000
= 147 𝐻𝑃
𝑛𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑠𝑡𝑎𝑔𝑒𝑠 =
ℎ𝑒𝑎𝑑
ℎ𝑒𝑎𝑑/𝑠𝑡𝑎𝑔𝑒
=
5000 𝑓𝑡
42 𝑓𝑡/𝑠𝑡𝑎𝑔𝑒
119 𝑠𝑡𝑎𝑔𝑒𝑠