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Transcript of pfe sans gas calculation
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ESP Design using
Realized and presented by: Omar Omrane
AutographPC softwarehand sizing and
Presentation of mygraduation project:
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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
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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
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1.Gas and Oil general overview
Gas Lift
ESP
PC Pumps
Hydraulic Pumps
Beam pump
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Electrical submersible pump
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2.Electrical submersible pump
Typical ESP System Electrical Power Cable
Submersible Pump
Pump Intake
Motor
Protector
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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.
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2.Electrical submersible pump
Surface Equipments
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2.Electrical submersible pump
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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
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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)
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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)
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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)
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3. ESP Hand sizing Design
2. Production Capacity (Cherouq1)
Pwf�PIP = 2029 psi PSI
PIP�
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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
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3. ESP Hand sizing Design
10 per 1000ft 3000
BPD
7 in OD
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3. Gas Calculation (Cherouq1)
3. ESP Hand sizing Design
% Free gas at pump intake = 5.81%< 10% Where
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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
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4. Total Dynamic Head
3. ESP Hand sizing Design
𝑭𝒕𝑯𝒅
𝑷𝒅
TDH = 7064 ft 22
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4. Total Dynamic Head calcuation steps
3. ESP Hand sizing Design
Pd = 438 ft Hd = 6127 ft Ft = 498 ft
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𝑭𝒕𝑯𝒅
𝑷𝒅
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3. ESP Hand sizing Design
3000BPD
31/2 in OD49 per 1000ft
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5. Pump Selection requirement
3. ESP Hand sizing Design
520 m3/d 68%1.34 Hp =37.73 ft =188
=293.651 Hp 25
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3. ESP Hand sizing Design
520 M3/d
11.5 M
68 %
1KW
P37 performance curve 26
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3. ESP Hand sizing Design SSD
139
50 No:6
No:16
Number of stages =189
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6. Seal Section selection specifications
3. ESP Hand sizing Design
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6. Seal Section selection specification
3. ESP Hand sizing Design
1.92 119 GSB3
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7. Motor selection specifications
3. ESP Hand sizing Design
297.051 Hp 2758 Volt77 Am 89.9%
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7. Motor selection Baker catalog
3. ESP Hand sizing Design
2758 V/77 Am 334HpSelected Motor horse power 31
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8. Cable selection (Cherouq1)
3. ESP Hand sizing Design
198 °F
77 Am
260 °F 32
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8. Cable selection
3. ESP Hand sizing Design
C76243 4 AWG 5KV 1.19 in 33
Round
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8. Cable selection Baker catalog
3. ESP Hand sizing Design
4 AWGCable Size
1.18 in Cable dimension
5KVCable Rating 34
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9. Motor Controller Selection
3. ESP Hand sizing Design
487 KVA 533 Am
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9. Motor Controller Selection Baker catalog
3. ESP Hand sizing Design
519 KVA 624 AMMotor controller KVA
Motor controller Amp 36
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Software Design
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4. ESP software design Well data screen capture
TDH=1910 m
Well
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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
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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
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4. ESP software design Seal section selection
Seal
Seal: 513 series GSB3 41
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4. ESP software design Cable selection
Cable
Cable: 4AWG CELR 5KV rating 42
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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
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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
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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
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