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Introduction to Subsea Engineering for Electrical Engineers

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Introduction to Subsea Engineering for Electrical Engineers PDHonline Course E443 (4 PDH) Introduction to Subsea Engineering for Electrical Engineers Anthony K. Ho, P.E. 2017 PDH Online | PDH Center 5272 Meadow Estates Drive Fairfax, VA 22030-6658 Phone & Fax: 703-988-0088 www.PDHonline.org www.PDHcenter.com An Approved Continuing Education Provider www.PDHcenter.com PDHonline Course E443 www.PDHonline.org Table of Content 1. Introduction ........................................................................................................................... 2 2. Subsea Production Systems ................................................................................................... 4 3. Multiplexed Electro-Hydraulic Control System ..................................................................... 7 4. Subsea Control Module (SCM) ............................................................................................... 9 5. Electric Submersible Pump (ESP) ......................................................................................... 11 6. Subsea Electrical Connectors ............................................................................................... 15 7. Electrical Flying Leads (EFL) ................................................................................................. 17 7.1 Construction ............................................................................................................... 18 7.2 Installation .................................................................................................................. 19 8. Subsea Electrical Power Distribution ................................................................................... 21 9. Subsea Distribution Unit (SDU) ............................................................................................ 24 10. Subsea Power Supply ........................................................................................................... 26 11. Subsea Power Grid ............................................................................................................... 27 12. Electrical Power System ....................................................................................................... 30 12.1 Design Codes, Standards, and Specifications ......................................................... 30 12.2 Electrical Load Calculation ...................................................................................... 31 13. Master Control Station (MCS) .............................................................................................. 34 14. Topside Umbilical Termination Assembly (TUTA) ............................................................... 35 15. Electrical Power Unit (EPU) .................................................................................................. 37 16. Subsea Power and Communication Unit (SPCU) ................................................................. 40 17. Uninterruptible Power Supply (UPS) ................................................................................... 41 17.1 Topside UPS ............................................................................................................ 41 17.2 Subsea UPS .............................................................................................................. 42 18. All Electric Subsea Control System ...................................................................................... 44 www.PDHcenter.com PDHonline Course E443 www.PDHonline.org List of Figures Figure 1: Typical Subsea Oil Field ................................................................................................................ 2 Figure 2: Topology for a Typical Oil and Gas Production System ............................................................... 4 Figure 3: Typical Subsea Tree P&ID ............................................................................................................ 5 Figure 4: Typical Manifold and Flowline P&ID ............................................................................................ 6 Figure 5: Multiplexed Electro-Hydraulic Umbilical (Cross Section) ............................................................ 7 Figure 6: Multiplexed Electro-Hydraulic Control System ........................................................................... 8 Figure 7: Subsea Control Module ............................................................................................................... 9 Figure 8: Subsea Electronics Module ........................................................................................................ 10 Figure 9: Typical Downhole ESP configuration ......................................................................................... 12 Figure 10: Pump Performance Curve ........................................................................................................ 13 Figure 11: Subsea Electrical Connectors ................................................................................................... 16 Figure 12: Electrical Flying Leads (Jumpers) ............................................................................................. 17 Figure 13: Leads are flown into place using ROV ...................................................................................... 18 Figure 14: Simulation of ROV Performing Tooling Intervention ............................................................... 20 Figure 15: Electrical and Hydraulic Distributions in Subsea Production System ...................................... 22 Figure 16: Subsea Distribution Unit (SDU) ................................................................................................ 24 Figure 17: Power Supply from Onshore to Subsea ................................................................................... 26 Figure 18: Subsea Power Grid ................................................................................................................... 27 Figure 19: Typical Subsea Power Grid Configuration ............................................................................... 28 Figure 20: Subsea Switchgear ................................................................................................................... 29 Figure 21: Electrical Power System Design Process .................................................................................. 30 Figure 22: Master Control Station ............................................................................................................ 34 Figure 23: Topside Umbilical Termination Assembly (TUTA) ................................................................... 35 Figure 24: Electrical Power Unit ................................................................................................................ 37 Figure 25: EPU Electrical Schematic .......................................................................................................... 38 Figure 26: EPU Display on the MCS........................................................................................................... 39 Figure 27: Topside UPS ............................................................................................................................. 41 Figure 28: Power Supply from UPS ........................................................................................................... 41 Figure 29: Subsea UPS ............................................................................................................................... 43 www.PDHcenter.com PDHonline Course E443 www.PDHonline.org List of Tables Table 1: Advantages and Disadvantages of Multiplexed Electro-Hydraulic Control System ..................... 7 Table 2: American Petroleum Institute (API) ............................................................................................ 31 Table 3: International Electrotechnical Commission (IEC) ....................................................................... 31 Table 4: Institute of Electrical and Electronics Engineers (IEEE) ............................................................... 31 Table 5: International Standards Organization (ISO) ................................................................................ 31 Table 6: Typical Electrical Load Categories ............................................................................................... 32 Table 7: Load Schedule for Electro-Hydraulic Production System ........................................................... 33 www.PDHcenter.com PDHonline Course E443 www.PDHonline.org Acronyms API American Petroleum Institute DHPTT Downhole Pressure and Temperature Transmitters EDM Electrical Distribution Manifold/Module EFL Electrical Flying Leads EPU Electrical Power Unit ESP Electric Submersible Pump FPSO Floating Production Storage and Offloading HPU Hydraulic Power Unit IEC International Electrotechnical Commission IEEE Institute of Electrical and Electronics Engineers ISO International Standards Organization MCS Master Control Station MQC Multiple Quick-Connect P&ID Piping and Instrumentation Diagram PIG Pipeline Inspection Gauge ROV Remotely Operated Underwater Vehicle SAS Safety Automation System SCM Subsea Control Module SDU Subsea Distribution Unit SEM Subsea Electronics Module SIT System Integration Test SUTA Subsea Umbilical Termination Assembly TUTA Topside Umbilical Termination Assembly ULM Umbilical Line Module UPS Uninterruptible Power Supply ©2014 Anthony K. Ho Page 1 of 45 www.PDHcenter.com PDHonline
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