Pump Sizing Calculation
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NAE DEEP OFFSHORE PROJECT
ETAN FPSO
EQUIPMENT SIZING / VALIDATION REPORT
CD-FE
01
01/04/2014
Issued for Review
Date
Description
Validity Revision Status Number Revision Index
Company logo and business name
K.Ekwuluo
R.Ogunyemi
Contractor Prepared
Contractor Verified
Project name NAE DEEP OFFSHORE PROJECT
exploration & production Contractor logo and business name
M.Omotoso Contractor Approved
Company Checked
Company Approved
Company Document ID Job N. Contractor Document ID
XXX-IES-P-DOC-001 BW OFFSHORE
INTERNATIONAL ENERGY SERVICES LTD.
Facility and Sub Facility Name
Contract N. Scale
ETAN FPSO
n.a.
Document Title
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EQUIPMENT SIZING / VALIDATION REPORT Software: Microsoft Word
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File Name: EQUIPMENT SIZING / VALIDATION REPORT.doc
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ABSTRACT
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Company Document ID
Contractor Document ID
XXX-IES-P-DOC-001 exploration & production
REVISION LIST
HOLD RECORD
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TABLE OF CONTENTS LIST OF TABLES ........................................................................................................................................... 5 LIST OF APPENDICES .................................................................................................................................. 5 LIST OF ABBREVIATIONS ........................................................................................................................... 6 1.0
INTRODUCTION.................................................................................................................................. 7
1.1
PROJECT OVERVIEW........................................................................................................................ 7
2.0
OBJECTIVES ...................................................................................................................................... 8
3.0
PUMP SIZING ...................................................................................................................................... 9
3.1
PUMP SIZING CRITERIA .................................................................................................................... 9
3.2
FLUID PROPERTIES ........................................................................................................................ 10
3.3
ASSUMPTIONS ................................................................................................................................ 11
3.3.1 PRODUCED WATER TRANSFER PUMP ......................................................................................... 11 3.3.2 WATER INJECTION BOOSTER PUMPS .......................................................................................... 11 3.3.3 WATER INJECTION PUMPS ............................................................................................................ 11 3.4
CALCULATION PROCEDURE .......................................................................................................... 12
4.0
RESULTS / EVALUATION ................................................................................................................ 13
5.0
CONCLUSION ................................................................................................................................... 14
6.0
REFERENCES: ................................................................................................................................. 15
APPENDICES .............................................................................................................................................. 16
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LIST OF TABLES Table 1
Equipment Index
Table 2
Liquid line sizing for pump suction & discharge
Table 3
Fluid Properties
Table 4
Summary of Results
LIST OF APPENDICES Appendix I
Produced water pump sizing calculation
Appendix II
Water Injection Pumps Sizing Calculation
Appendix III
Heat & Material Balance For Maximum Oil & Gas (Start-up)
Appendix IV
Heat & Material Balance For Maximum Water Case
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exploration & production
LIST OF ABBREVIATIONS
Abbreviations
Meaning
bara
Bar absolute
barg
Bar guage
bpd
Barrels per day
FEED
Front End Engineering Design
FPSO
Floating, Production, Storage & Offloading
HMB
Heat & Material Balance
hp IESL Kg/m3 kW NAE
Horse power International Energy Services Limited Kilogram per cubic metre kiloWatts Nigerian Agip Exploration Ltd
NPSHA
Net Positive Suction Head Available
NPSHR
Net Positive Suction Head Required
P&ID psi SNEPCo
Piping & Instrumentation Diagram Pound per square inch Shell Nigeria Exploration & Production Company
This document is property of Eni S.p.A. Exploration & Production Division. It shall neither be shown to Third Parties not used for purposes other than those for which it has been sent.
Contractor Document ID
Company Document ID
XXX-IES-P-DOC-001 exploration & production
1.0
INTRODUCTION
1.1
Project Overview
Sheet of Sheets 7 / 24 Validity Status
Revision Number
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Nigerian Agip Exploration Limited (NAE) and Shell Nigeria Exploration and Production Company (SNEPCo) are in the process of developing NAE Deep Offshore Block located approximately 150kilometers offshore Nigeria. In particular, the block is a 1,958 km2 block license located in the deepwater eastern portion of the Niger Delta in Nigeria, with water depths ranging from 1,200 to 2,400 m. The current development scenario involves production from subsea wells located in water depths around 1,750 - 1800 meters. The wells would be conveyed to a moored ship-shaped FPSO. The FPSO would be utilised for: a. Stabilisation, dehydration, storage and export of crude oil product, b. Dehydration, compression and export of gas, c. Separation and treatment of produced water, d. Seawater treatment; e. Produced water and Seawater injection for Reservoir pressure maintenance f. Power generation for FPSO marine, accommodation and process loads, g. Gas lift at riser base at an appropriate pressure The block (Fig. 1) comprises two discoveries, Zabazaba and Etan, which are separated by a significant seafloor canyon. The field is in about 1,950 m water depth and the distance between Zabazaba and Etan is about 30/40 km.
Figure 1: Block Location
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BW Offshore has therefore employed the services of IESL to carry out the Front End Engineering Design (FEED) for the new Water injection and Produced Water Treatment modules/systems. This document shows the process equipment sizing calculations carried out on the Produced Water Treatment and New Water Injection modules. 2.0
OBJECTIVES
The purpose of this document is to provide the sizing calculations for the both the Produced Water and Water Injection Pumps. Table 1: Equipment Index No.
Description
Tag
Quantity
P&ID Number(s)
1
Produced Water Transfer Pump
44PA101A/B/C (3x50%)
3
4295-IES-P-XB-44005.001
2
Water Injection Booster Pumps
29PA101 A/B/C (3x50%)
3
4295-IES-P-XB-29004.001
3
Water Injection Pump
29PA102 A / B
2
4295-IES-P-XB-29005.001
This document is property of Eni S.p.A. Exploration & Production Division. It shall neither be shown to Third Parties not used for purposes other than those for which it has been sent.
Company Document ID
Contractor Document ID
XXX-IES-P-DOC-001 exploration & production
3.0
PUMP SIZING
3.1
Pump Sizing Criteria
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The Water injection and injection booster pumps were sized in accordance with API RP 14E (Ref 8) and the Eni exploration & production design criteria reference document for process minimum requirement (Ref 9). The following criteria form the basis for the pump sizing as per API 14E (Ref 8): • Velocity in the suction pipe shall be between 2 - 3 ft/s (Table 2.3). • Velocity in the discharge pipe shall be between 6 – 9 ft/s (Table 2.3). • Pump should be sized to provide adequate head required and to ensure that the NPSHA exceeds the NPSHR (Ref 8) so that essentially no vapor will be flashed from the liquid as it enters the pump casing or cylinder. Similarly, Table 2 below shows the design criteria as specified in the Eni exploration & production design criteria. Table 2: Liquid line sizing for pump suction & discharge ∆P(bar) / 100m
SERVICE
Normal (Note 1)
Maximum (Note 1)
Maximum Velocity (m/s)
0.05
0.8
1.0
0.1
1.5
0.11
1.8
0.35
2.0
0.35
3.0
Pump Suction • Liquid @ bubble point or with dissolved gas ( ≥ 4”) • Liquid at bubble point or with dissolved gas ( 4”-8”)
0.07 0.07
• Liquid at bubble point or with dissolved gas ( ≥ 8”)
• Sub-cooled Liquid ( < 8”) • Sub-cooled Liquid ( ≥ 8”)
0.25 0.25
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Table 2: Liquid line sizing for pump suction & discharge (Cont’d) ∆P(bar) / 100m
SERVICE
Normal (Note 1)
Maximum (Note 1)
Maximum Velocity (m/s)
0.05
0.8
1.0
Pump Discharge • Lines ( < 4”)
• Lines ( ≥ 8”)
0.07
0.1
1.5
Note 1: For all calculations, reference was made to the normal value. 3.2
Fluid Properties The fluid properties for the Produced Water Transfer Pumps was taken from the Maximum Water Simulation case, while the fluid properties for the Water Injection Booster pumps and Water Injection pumps were taken from the Maximum Oil & Gas (Start-up) Simulation case. The table below shows the fluid properties from the respective Heat and Material Balance (HMB) Tables (Ref 4 & 5) which were used for the sizing. Table 3: Fluid Properties No.
Description
Tag
Flowrate (m3/h)
Flowrate (bpd)
Density (Kg/m3)
1
Produced water transfer pump
44PA101A/B/C (3x50%)
198.72
30,000
994.4
2
Water injection booster pumps
29PA101 A/B/C (3x50%)
132.40
20,000
1006
3
Water injection pump
29PA102 A / B (2 x 100%)
264.80
40,000
1006
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3.3
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ASSUMPTIONS Assumptions were made on individual pump sizing which await the actual values from the isometric drawing. Below are the series of assumptions. 3.3.1
Produced water transfer pump
•
Suction pipe length 10m
•
Suction static head 8m considering the vessel height.
•
Total K-factor (based on valves & fittings on the suction line) 6.89
•
Discharge pipe length based on 100ft (30.48m)
•
Discharge static head 10m
•
Total K-factor (based on valves & fittings on the discharge line) 2.89
3.3.2
Water Injection booster pumps
•
Suction pipe length 10m
•
Suction static head 8m
•
Total K-factor (based on valves & fittings on the suction line) 1.33
•
Discharge pipe length 10m
•
Discharge static head 10m
•
Total K-factor (based on valves & fittings on the discharge line) 4.74
•
A discharge pressure of 11 barg was used.
3.3.3
Water Injection pumps
•
Suction pipe length 10m
•
Suction static head 8m
•
Total K-factor (based on valves & fittings on the suction line) 0.637
•
Discharge pipe length 20m
•
Discharge static head 10m
•
Total K-factor (based on valves & fittings on the discharge line) 2.38
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3.4
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CALCULATION PROCEDURE The following methodology was used in performing the pump sizing / NPSH calculation a. Pipe Data & Fluid properties was gathered b. The absolute total pressure at pump suction was calculated. c.
The absolute total pressure at pump discharge was calculated.
d. The Differential head of the pumps was determined. e. The pump hydraulic power was determined. f.
The pump actual horse power was determined.
g. The Net Positive Suction Head Available (NPSHA) was calculated. Appendix I & II shows the detailed pump sizing calculation of the Produced Water transfer pumps, Water Injection Booster Pumps and Water Injection Pumps.
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4.0 RESULTS / EVALUATION A summary of the calculation result is giving in the table below.
Table 4: Summary of Results Produced Water Transfer Pump (44PA101A/B/C)
Water Injection Booster Pump (29PA101A/B/C)
Water Injection Pump (29PA102A/B)
Differential Head (m)
28.668
84.068
1407.640
Flowrate (bpd)
32,998*
20,000
40,000
Hydraulic Power (hp)
22.73
40.85
1371.19
Estimated Horsepower (kW)
19.51
35.60
1165.01
NPSHa (m)
37.84
48.02
128.99
Pump Efficiency
85.64
83.72
86.31
Suction
0.02
0.025
0.025
Discharge
0.18
0.294
0.237
Suction
0.84
0.7
0.8
Discharge
2.06
2.0
2.2
Pump Parameters
∆P / 100m (bar)
Velocity (m/s)
The pressure drop per length (∆P / 100m) values were obtained from the Process Calculation Report (Ref 10) which captured all process lines inclusive of all pump suction and discharge lines. *A flow margin of 10% was added to the produced water pumps.
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5.0 CONCLUSION The results obtained from the pump sizing calculation as shown in Table 4, indicates that the pump suction and discharge lines for the Produced Water transfer pumps, Water Injection Booster Pumps and the Water Injection pumps adequately meet the specified criteria in section 3.1. Appendix I & II show the detailed sizing calculation spreadsheets of the Produced and sea water pump sizing respectively.
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6.0 REFERENCES: 1.
Basis of Design Etan Development - 325300BGRB12000.
2.
Process Design Philosophy - 4295-BWO-P-FD-00001.
3.
Produced water transfer Pumps P&ID – 4295-IESL-P-XB-44005.001.
4.
Heat & Material Balance for Maximum Oil & Gas (Start-up).
5.
Heat & Material Balance for Maximum Water Case.
6.
Water injection booster pumps P&ID - 4295-IES-P-XB-29004.001.
7.
Water injection pumps P&ID – 4295-IES-P-XB-29005.001.
8.
API 14E – Recommended Practice for Design & Installation of Offshore Petroleum Production Platform Piping Systems (Section 2.3b).
9.
Eni Exploration & Production Design Criteria (10009.HTP.PRC.PRG) – Process Minimum Requirement
10.
Process Calculation Report (XXX-IES-P-DOC-002)
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APPENDICES
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APPENDIX I Produced water pump sizing calculation
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APPENDIX II Water Injection Pumps Sizing Calculation
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APPENDIX III Heat & Material Balance For Maximum Oil & Gas (Start-up)
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APPENDIX IV Heat & Material Balance For Maximum Water Case
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This document is property of Eni S.p.A. Exploration & Production Division. It shall neither be shown to Third Parties not used for purposes other than those for which it has been sent.
ETAN FPSO
EQUIPMENT SIZING / VALIDATION REPORT
CD-FE
01
01/04/2014
Issued for Review
Date
Description
Validity Revision Status Number Revision Index
Company logo and business name
K.Ekwuluo
R.Ogunyemi
Contractor Prepared
Contractor Verified
Project name NAE DEEP OFFSHORE PROJECT
exploration & production Contractor logo and business name
M.Omotoso Contractor Approved
Company Checked
Company Approved
Company Document ID Job N. Contractor Document ID
XXX-IES-P-DOC-001 BW OFFSHORE
INTERNATIONAL ENERGY SERVICES LTD.
Facility and Sub Facility Name
Contract N. Scale
ETAN FPSO
n.a.
Document Title
Sheet of Sheets 1 / 24
Supersedes N.
EQUIPMENT SIZING / VALIDATION REPORT Software: Microsoft Word
Superseded by N. Plant Area Plant Unit n.a. n.a.
File Name: EQUIPMENT SIZING / VALIDATION REPORT.doc
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TABLE OF CONTENTS LIST OF TABLES ........................................................................................................................................... 5 LIST OF APPENDICES .................................................................................................................................. 5 LIST OF ABBREVIATIONS ........................................................................................................................... 6 1.0
INTRODUCTION.................................................................................................................................. 7
1.1
PROJECT OVERVIEW........................................................................................................................ 7
2.0
OBJECTIVES ...................................................................................................................................... 8
3.0
PUMP SIZING ...................................................................................................................................... 9
3.1
PUMP SIZING CRITERIA .................................................................................................................... 9
3.2
FLUID PROPERTIES ........................................................................................................................ 10
3.3
ASSUMPTIONS ................................................................................................................................ 11
3.3.1 PRODUCED WATER TRANSFER PUMP ......................................................................................... 11 3.3.2 WATER INJECTION BOOSTER PUMPS .......................................................................................... 11 3.3.3 WATER INJECTION PUMPS ............................................................................................................ 11 3.4
CALCULATION PROCEDURE .......................................................................................................... 12
4.0
RESULTS / EVALUATION ................................................................................................................ 13
5.0
CONCLUSION ................................................................................................................................... 14
6.0
REFERENCES: ................................................................................................................................. 15
APPENDICES .............................................................................................................................................. 16
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LIST OF TABLES Table 1
Equipment Index
Table 2
Liquid line sizing for pump suction & discharge
Table 3
Fluid Properties
Table 4
Summary of Results
LIST OF APPENDICES Appendix I
Produced water pump sizing calculation
Appendix II
Water Injection Pumps Sizing Calculation
Appendix III
Heat & Material Balance For Maximum Oil & Gas (Start-up)
Appendix IV
Heat & Material Balance For Maximum Water Case
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exploration & production
LIST OF ABBREVIATIONS
Abbreviations
Meaning
bara
Bar absolute
barg
Bar guage
bpd
Barrels per day
FEED
Front End Engineering Design
FPSO
Floating, Production, Storage & Offloading
HMB
Heat & Material Balance
hp IESL Kg/m3 kW NAE
Horse power International Energy Services Limited Kilogram per cubic metre kiloWatts Nigerian Agip Exploration Ltd
NPSHA
Net Positive Suction Head Available
NPSHR
Net Positive Suction Head Required
P&ID psi SNEPCo
Piping & Instrumentation Diagram Pound per square inch Shell Nigeria Exploration & Production Company
This document is property of Eni S.p.A. Exploration & Production Division. It shall neither be shown to Third Parties not used for purposes other than those for which it has been sent.
Contractor Document ID
Company Document ID
XXX-IES-P-DOC-001 exploration & production
1.0
INTRODUCTION
1.1
Project Overview
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Nigerian Agip Exploration Limited (NAE) and Shell Nigeria Exploration and Production Company (SNEPCo) are in the process of developing NAE Deep Offshore Block located approximately 150kilometers offshore Nigeria. In particular, the block is a 1,958 km2 block license located in the deepwater eastern portion of the Niger Delta in Nigeria, with water depths ranging from 1,200 to 2,400 m. The current development scenario involves production from subsea wells located in water depths around 1,750 - 1800 meters. The wells would be conveyed to a moored ship-shaped FPSO. The FPSO would be utilised for: a. Stabilisation, dehydration, storage and export of crude oil product, b. Dehydration, compression and export of gas, c. Separation and treatment of produced water, d. Seawater treatment; e. Produced water and Seawater injection for Reservoir pressure maintenance f. Power generation for FPSO marine, accommodation and process loads, g. Gas lift at riser base at an appropriate pressure The block (Fig. 1) comprises two discoveries, Zabazaba and Etan, which are separated by a significant seafloor canyon. The field is in about 1,950 m water depth and the distance between Zabazaba and Etan is about 30/40 km.
Figure 1: Block Location
This document is property of Eni S.p.A. Exploration & Production Division. It shall neither be shown to Third Parties not used for purposes other than those for which it has been sent.
Company Document ID
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Sheet of Sheets 8 / 24 Validity Status
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01
BW Offshore has therefore employed the services of IESL to carry out the Front End Engineering Design (FEED) for the new Water injection and Produced Water Treatment modules/systems. This document shows the process equipment sizing calculations carried out on the Produced Water Treatment and New Water Injection modules. 2.0
OBJECTIVES
The purpose of this document is to provide the sizing calculations for the both the Produced Water and Water Injection Pumps. Table 1: Equipment Index No.
Description
Tag
Quantity
P&ID Number(s)
1
Produced Water Transfer Pump
44PA101A/B/C (3x50%)
3
4295-IES-P-XB-44005.001
2
Water Injection Booster Pumps
29PA101 A/B/C (3x50%)
3
4295-IES-P-XB-29004.001
3
Water Injection Pump
29PA102 A / B
2
4295-IES-P-XB-29005.001
This document is property of Eni S.p.A. Exploration & Production Division. It shall neither be shown to Third Parties not used for purposes other than those for which it has been sent.
Company Document ID
Contractor Document ID
XXX-IES-P-DOC-001 exploration & production
3.0
PUMP SIZING
3.1
Pump Sizing Criteria
Sheet of Sheets 9 / 24 Validity Status
Revision Number
CD-FE
01
The Water injection and injection booster pumps were sized in accordance with API RP 14E (Ref 8) and the Eni exploration & production design criteria reference document for process minimum requirement (Ref 9). The following criteria form the basis for the pump sizing as per API 14E (Ref 8): • Velocity in the suction pipe shall be between 2 - 3 ft/s (Table 2.3). • Velocity in the discharge pipe shall be between 6 – 9 ft/s (Table 2.3). • Pump should be sized to provide adequate head required and to ensure that the NPSHA exceeds the NPSHR (Ref 8) so that essentially no vapor will be flashed from the liquid as it enters the pump casing or cylinder. Similarly, Table 2 below shows the design criteria as specified in the Eni exploration & production design criteria. Table 2: Liquid line sizing for pump suction & discharge ∆P(bar) / 100m
SERVICE
Normal (Note 1)
Maximum (Note 1)
Maximum Velocity (m/s)
0.05
0.8
1.0
0.1
1.5
0.11
1.8
0.35
2.0
0.35
3.0
Pump Suction • Liquid @ bubble point or with dissolved gas ( ≥ 4”) • Liquid at bubble point or with dissolved gas ( 4”-8”)
0.07 0.07
• Liquid at bubble point or with dissolved gas ( ≥ 8”)
• Sub-cooled Liquid ( < 8”) • Sub-cooled Liquid ( ≥ 8”)
0.25 0.25
This document is property of Eni S.p.A. Exploration & Production Division. It shall neither be shown to Third Parties not used for purposes other than those for which it has been sent.
Company Document ID
Contractor Document ID
XXX-IES-P-DOC-001 exploration & production
Sheet of Sheets 10 / 24 Validity Status
Revision Number
CD-FE
01
Table 2: Liquid line sizing for pump suction & discharge (Cont’d) ∆P(bar) / 100m
SERVICE
Normal (Note 1)
Maximum (Note 1)
Maximum Velocity (m/s)
0.05
0.8
1.0
Pump Discharge • Lines ( < 4”)
• Lines ( ≥ 8”)
0.07
0.1
1.5
Note 1: For all calculations, reference was made to the normal value. 3.2
Fluid Properties The fluid properties for the Produced Water Transfer Pumps was taken from the Maximum Water Simulation case, while the fluid properties for the Water Injection Booster pumps and Water Injection pumps were taken from the Maximum Oil & Gas (Start-up) Simulation case. The table below shows the fluid properties from the respective Heat and Material Balance (HMB) Tables (Ref 4 & 5) which were used for the sizing. Table 3: Fluid Properties No.
Description
Tag
Flowrate (m3/h)
Flowrate (bpd)
Density (Kg/m3)
1
Produced water transfer pump
44PA101A/B/C (3x50%)
198.72
30,000
994.4
2
Water injection booster pumps
29PA101 A/B/C (3x50%)
132.40
20,000
1006
3
Water injection pump
29PA102 A / B (2 x 100%)
264.80
40,000
1006
This document is property of Eni S.p.A. Exploration & Production Division. It shall neither be shown to Third Parties not used for purposes other than those for which it has been sent.
Company Document ID
Contractor Document ID
XXX-IES-P-DOC-001 exploration & production
3.3
Sheet of Sheets 11 / 24 Validity Status
Revision Number
CD-FE
01
ASSUMPTIONS Assumptions were made on individual pump sizing which await the actual values from the isometric drawing. Below are the series of assumptions. 3.3.1
Produced water transfer pump
•
Suction pipe length 10m
•
Suction static head 8m considering the vessel height.
•
Total K-factor (based on valves & fittings on the suction line) 6.89
•
Discharge pipe length based on 100ft (30.48m)
•
Discharge static head 10m
•
Total K-factor (based on valves & fittings on the discharge line) 2.89
3.3.2
Water Injection booster pumps
•
Suction pipe length 10m
•
Suction static head 8m
•
Total K-factor (based on valves & fittings on the suction line) 1.33
•
Discharge pipe length 10m
•
Discharge static head 10m
•
Total K-factor (based on valves & fittings on the discharge line) 4.74
•
A discharge pressure of 11 barg was used.
3.3.3
Water Injection pumps
•
Suction pipe length 10m
•
Suction static head 8m
•
Total K-factor (based on valves & fittings on the suction line) 0.637
•
Discharge pipe length 20m
•
Discharge static head 10m
•
Total K-factor (based on valves & fittings on the discharge line) 2.38
This document is property of Eni S.p.A. Exploration & Production Division. It shall neither be shown to Third Parties not used for purposes other than those for which it has been sent.
Company Document ID
Contractor Document ID
XXX-IES-P-DOC-001 exploration & production
3.4
Sheet of Sheets 12 / 24 Validity Status
Revision Number
CD-FE
01
CALCULATION PROCEDURE The following methodology was used in performing the pump sizing / NPSH calculation a. Pipe Data & Fluid properties was gathered b. The absolute total pressure at pump suction was calculated. c.
The absolute total pressure at pump discharge was calculated.
d. The Differential head of the pumps was determined. e. The pump hydraulic power was determined. f.
The pump actual horse power was determined.
g. The Net Positive Suction Head Available (NPSHA) was calculated. Appendix I & II shows the detailed pump sizing calculation of the Produced Water transfer pumps, Water Injection Booster Pumps and Water Injection Pumps.
This document is property of Eni S.p.A. Exploration & Production Division. It shall neither be shown to Third Parties not used for purposes other than those for which it has been sent.
Company Document ID
Contractor Document ID
XXX-IES-P-DOC-001 exploration & production
Sheet of Sheets 13 / 24 Validity Status
Revision Number
CD-FE
01
4.0 RESULTS / EVALUATION A summary of the calculation result is giving in the table below.
Table 4: Summary of Results Produced Water Transfer Pump (44PA101A/B/C)
Water Injection Booster Pump (29PA101A/B/C)
Water Injection Pump (29PA102A/B)
Differential Head (m)
28.668
84.068
1407.640
Flowrate (bpd)
32,998*
20,000
40,000
Hydraulic Power (hp)
22.73
40.85
1371.19
Estimated Horsepower (kW)
19.51
35.60
1165.01
NPSHa (m)
37.84
48.02
128.99
Pump Efficiency
85.64
83.72
86.31
Suction
0.02
0.025
0.025
Discharge
0.18
0.294
0.237
Suction
0.84
0.7
0.8
Discharge
2.06
2.0
2.2
Pump Parameters
∆P / 100m (bar)
Velocity (m/s)
The pressure drop per length (∆P / 100m) values were obtained from the Process Calculation Report (Ref 10) which captured all process lines inclusive of all pump suction and discharge lines. *A flow margin of 10% was added to the produced water pumps.
This document is property of Eni S.p.A. Exploration & Production Division. It shall neither be shown to Third Parties not used for purposes other than those for which it has been sent.
Company Document ID
Contractor Document ID
XXX-IES-P-DOC-001 exploration & production
Sheet of Sheets 14 / 24 Validity Status
Revision Number
CD-FE
01
5.0 CONCLUSION The results obtained from the pump sizing calculation as shown in Table 4, indicates that the pump suction and discharge lines for the Produced Water transfer pumps, Water Injection Booster Pumps and the Water Injection pumps adequately meet the specified criteria in section 3.1. Appendix I & II show the detailed sizing calculation spreadsheets of the Produced and sea water pump sizing respectively.
This document is property of Eni S.p.A. Exploration & Production Division. It shall neither be shown to Third Parties not used for purposes other than those for which it has been sent.
Company Document ID
Contractor Document ID
XXX-IES-P-DOC-001 exploration & production
Sheet of Sheets 15 / 24 Validity Status
Revision Number
CD-FE
01
6.0 REFERENCES: 1.
Basis of Design Etan Development - 325300BGRB12000.
2.
Process Design Philosophy - 4295-BWO-P-FD-00001.
3.
Produced water transfer Pumps P&ID – 4295-IESL-P-XB-44005.001.
4.
Heat & Material Balance for Maximum Oil & Gas (Start-up).
5.
Heat & Material Balance for Maximum Water Case.
6.
Water injection booster pumps P&ID - 4295-IES-P-XB-29004.001.
7.
Water injection pumps P&ID – 4295-IES-P-XB-29005.001.
8.
API 14E – Recommended Practice for Design & Installation of Offshore Petroleum Production Platform Piping Systems (Section 2.3b).
9.
Eni Exploration & Production Design Criteria (10009.HTP.PRC.PRG) – Process Minimum Requirement
10.
Process Calculation Report (XXX-IES-P-DOC-002)
This document is property of Eni S.p.A. Exploration & Production Division. It shall neither be shown to Third Parties not used for purposes other than those for which it has been sent.
Company Document ID
Contractor Document ID
XXX-IES-P-DOC-001 exploration & production
APPENDICES
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Sheet of Sheets 16 / 24 Validity Status
Revision Number
CD-FE
01
Contractor Document ID
Company Document ID
XXX-IES-P-DOC-001 exploration & production
APPENDIX I Produced water pump sizing calculation
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Sheet of Sheets 17 / 24 Validity Status
Revision Number
CD-FE
01
Company Document ID
Contractor Document ID
XXX-IES-P-DOC-001 exploration & production
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Sheet of Sheets 18 / 24 Validity Status
Revision Number
CD-FE
01
Company Document ID
Contractor Document ID
XXX-IES-P-DOC-001 exploration & production
APPENDIX II Water Injection Pumps Sizing Calculation
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Sheet of Sheets 19 / 24 Validity Status
Revision Number
CD-FE
01
Company Document ID
Contractor Document ID
XXX-IES-P-DOC-001 exploration & production
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Sheet of Sheets 20 / 24 Validity Status
Revision Number
CD-FE
01
Company Document ID
Contractor Document ID
XXX-IES-P-DOC-001 exploration & production
APPENDIX III Heat & Material Balance For Maximum Oil & Gas (Start-up)
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Sheet of Sheets 21 / 24 Validity Status
Revision Number
CD-FE
01
Company Document ID
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XXX-IES-P-DOC-001 exploration & production
Sheet of Sheets 22/ 24 Validity Status
Revision Number
CD-FE
01
This document is property of Eni S.p.A. Exploration & Production Division. It shall neither be shown to Third Parties not used for purposes other than those for which it has been sent.
Company Document ID
Contractor Document ID
XXX-IES-P-DOC-001 exploration & production
APPENDIX IV Heat & Material Balance For Maximum Water Case
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Sheet of Sheets 23/ 24 Validity Status
Revision Number
CD-FE
01
Company Document ID
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XXX-IES-P-DOC-001 exploration & production
Sheet of Sheets 24/ 24 Validity Status
Revision Number
CD-FE
01
This document is property of Eni S.p.A. Exploration & Production Division. It shall neither be shown to Third Parties not used for purposes other than those for which it has been sent.
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