pfe sans gas calculation

ESP Design using

Realized and presented by: Omar Omrane

AutographPC softwarehand sizing and

Presentation of mygraduation project:

Project plan

1 Oil and Gas general overview

2

Electrical submersible pump

ESP hand sizing design

ESP software design

Economic study of the project

2

3

4

5

Conclusion6

1.Gas and Oil general overview

PRODUCED FLOWRATE

SURFACE PRESSUREAt Wellhead

Pwf

Po

Reservoir Pressure- Pr

•If Pothe well will flow naturally

(~6% of wells by number)

< Pwf•If Pothe well will require Artificial lift

(~94% of wells worldwide)

> Pwf

3

1.Gas and Oil general overview

Gas Lift

ESP

PC Pumps

Hydraulic Pumps

Beam pump

4

Electrical submersible pump

5

2.Electrical submersible pump

Typical ESP System Electrical Power Cable

Submersible Pump

Pump Intake

Motor

Protector

6

2.Electrical submersible pump

Centrifugal pump

The heart of the ESP

system:

- Converts kinetic energy

to potential energy

Gas separator

A pump protector:

- Prevents high amount

of free gas to enter the

pump

Seal section

A motor protector:

-Provides a reservoir for

the thermal expansion of

the motor's oil.

-Isolates the clean motor

oil from wellbore fluids

Motor

-Transforms electrical

energy into motion

Power cable

-Transforms electrical

energy from the surface

down to the submersible

components.

7

8

2.Electrical submersible pump

Surface Equipments

9

2.Electrical submersible pump

10

2.Electrical submersible pump

Wellhead function -Suspends the tubing string

-Controls high pressures

Junction Box function

- Allows for any gas to vent - Provides easy point for electrically checking

Transformer function

-Powers the surface equipments -Transforms and sends correct voltage to the motor controller

Motor controller function

- Provides soft start to the motor - Motor protection from overload and underload

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ESP hand sizing Design

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3. ESP Hand sizing Design

Basic dataProduction capacityGas calculationTotal dynamic headPump selectionProtector selection Motor selectionPower cable selectionMotor controller selection

Basic Design workflow

13

3. ESP Hand sizing Design

Well data Casing size: 9 5/8"OD (8.681" ID) Liner size: 7” OD Tubing size: 3 ½” OD(2.991” ID) Pump setting depth: 10170.48 ft Perforated hole interval: From

11023.488 ft to 11305.63 ft

1. Basic Data (Cherouq1)

14

3. ESP Hand sizing Design

Production Data Wellhead pressure: 220 Psi Bottom Hole Temperature: 197 °F Desired production rate: 3000

BFPD Gas Oil Ratio GOR: 1577 scf/stb Water Cut: 98.5 %

1. Basic Data (Cherouq1)

15

3. ESP Hand sizing Design

Well fluid conditionSpecific gravity of water: 1.2 Oil API°: 42.3 Specific gravity of the gas: 0.84Bubble point pressure: 4080 PsiBubble point temperature: 197 °FPVT data: PI= 1.8 bbl/day/psi

1. Basic Data (Cherouq1)

16

3. ESP Hand sizing Design

2. Production Capacity (Cherouq1)

Pwf�PIP = 2029 psi PSI

PIP�

17

3. ESP Hand sizing Design

PIP Calculation steps Pwf =2533 PsiSGliquid=1.159 Head(ft)=994 ftPSI= 499 psi FT(ft) =9.94 ft FT(psi) =5 psi 18

3. ESP Hand sizing Design

10 per 1000ft 3000

BPD

7 in OD

19

3. Gas Calculation (Cherouq1)

3. ESP Hand sizing Design

% Free gas at pump intake = 5.81%< 10% Where

20

3. ESP Hand sizing Design

Gas Calculation steps Rs=657scf/stb Bo= 1.87bbl/bbl Bg =0.7 bbl/mcf Vg = 289 mcf Vt = 3476 bbl 21

4. Total Dynamic Head

3. ESP Hand sizing Design

𝑭𝒕𝑯𝒅

𝑷𝒅

TDH = 7064 ft 22

4. Total Dynamic Head calcuation steps

3. ESP Hand sizing Design

Pd = 438 ft Hd = 6127 ft Ft = 498 ft

23

𝑭𝒕𝑯𝒅

𝑷𝒅

23

3. ESP Hand sizing Design

3000BPD

31/2 in OD49 per 1000ft

24

5. Pump Selection requirement

3. ESP Hand sizing Design

520 m3/d 68%1.34 Hp =37.73 ft =188

=293.651 Hp 25

3. ESP Hand sizing Design

520 M3/d

11.5 M

68 %

1KW

P37 performance curve 26

3. ESP Hand sizing Design SSD

139

50 No:6

No:16

Number of stages =189

27

6. Seal Section selection specifications

3. ESP Hand sizing Design

28

6. Seal Section selection specification

3. ESP Hand sizing Design

1.92 119 GSB3

29

7. Motor selection specifications

3. ESP Hand sizing Design

297.051 Hp 2758 Volt77 Am 89.9%

30

7. Motor selection Baker catalog

3. ESP Hand sizing Design

2758 V/77 Am 334HpSelected Motor horse power 31

8. Cable selection (Cherouq1)

3. ESP Hand sizing Design

198 °F

77 Am

260 °F 32

8. Cable selection

3. ESP Hand sizing Design

C76243 4 AWG 5KV 1.19 in 33

Round

8. Cable selection Baker catalog

3. ESP Hand sizing Design

4 AWGCable Size

1.18 in Cable dimension

5KVCable Rating 34

9. Motor Controller Selection

3. ESP Hand sizing Design

487 KVA 533 Am

35

9. Motor Controller Selection Baker catalog

3. ESP Hand sizing Design

519 KVA 624 AMMotor controller KVA

Motor controller Amp 36

Software Design

37

4. ESP software design Well data screen capture

TDH=1910 m

Well

38

Pump selection screen capture

4. ESP software design

Pump type: 538P31 series

Pump

Pump stages = 129 Pump power = 267.1 Hp Pump frequency = 59.7 Hz3064 bbl/d

1940 M Flowrate at the surface =3064 bbl/d

39

4. ESP software design Motor selection screen capture

Motor

Motor power = 300 HpMotor voltage = 3510 VMotor amperage = 55 amMotor load = 89.83 %Motor type: 450MSP1 series 40

4. ESP software design Seal section selection

Seal

Seal: 513 series GSB3 41

4. ESP software design Cable selection

Cable

Cable: 4AWG CELR 5KV rating 42

4. ESP software design Motor Controller selection

MotorController

Motor controller: 8600-VT 494 KVA 750 AMP

Motor controller amperage = 750 amMotor controller KVA = 494 KVA

Step up ratio = 9.254

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Economic study

44

4. Economic Study

Net Present Value NPV: the sum of all project cashflows, discounted back to a common point in time NPV = 1409000 $ > 0

The project is profitable

45

5.Conclusion

This project focused mainly the outflow

performance that’s mean the use of a lifting

system to regain well production. It can be

extended to discuss other alternatives dealing

with inflow performance of the well to enhance

reservoir capacity like (Hydraulic fracture and

acid job)

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5.Conclusion

47