My Internship Experience Summary
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Gbolahan Dada completed a 6-month internship with ExxonMobil Nigeria in their Design Engineering Services department. During the internship, he received training in oil and gas industry overview, basic facilities engineering, process safety design, equipment design, and process simulation. He participated in two project engagements and field trips to fabrication yards and operational facilities. He performed safety analyses and design calculations for various process components. Overall, it was a valuable learning experience for Gbolahan as he nears completion of his chemical engineering degree.
My Internship Experience Summary
- 1. My Internship Experience Summary Nigeria Projects Organisation – Design Engineering Services ExxonMobil Nigeria Gbolahan Dada January 2015
- 2. 2 OUTLINE Safety Moment Introduction Work Experience Technical presentation Questions Conclusion General feedback
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- 4. 4 INTRODUCTION University of Lagos, Akoka • BSc. Chemical Engineering (in view) Internship Duration (6 months) • Start Date: July 2014 • End Date: January 2015 Post-Internship • Final year of my undergraduate program • Student President of NSChE Unilag Charter (2015) University of Lagos, Akoka
- 5. 5 My EXPERIENCE • Trainings • Oil and Gas Industry Overview • Basic Facilities Engineering Knowledge • Field Trips • Process Safety Design • Equipment Design • Process Simulation and Modelling • Others
- 6. 6 OIL & GAS INDUSTRY OVERVIEW • Upstream, Mid-stream and Downstream • Hydrocarbon formation • Reservoir discovery • Exploration • Field development • Production and Extension of Field life • Transportation • Storage
- 7. 7 BASIC FACLITIES ENGINEERING KNOWLEDGE • Material and Heat balance • Thermodynamics • Physical properties of Hydrocarbons • Phase behaviour • Vapour-Liquid Equilibrium • Water-Hydrocarbon Phase behaviour • Reading PFDs and P&IDs
- 8. 8 Project Engagements • Erha Calcium Nitrate Injection Project • Erha North Phase II
- 9. 9 FIELD TRIPS • Niger Dock Fabrication yard, Snake Island • Chenotech Fabrication yard, Port Harcourt At Niger Dock, I saw the fabrication of several piping members and pressure vessels, welding and machining of other process equipment parts. I also witnessed some Quality tests being carried out – hydrotest, and radiography.
- 10. 10 At Chenotech, I witnessed the fabrication and assembly of foam makers for fire water safety systems • Threading of carbon steel pipe with both manual and machining methods • Coating of Fire water lines • Machining of curved pipes • We also saw completely fabricated Pig traps and Fire water lines We were allowed into their store, where we saw some process devices such as various valves, gaskets, flow meter, flanges, etc.
- 11. 11 Operational Facility Visit On UBIT GH (Wellhead platform), • Test Separator • Manifold • Well heads (Christmas trees) • PSV • Level gauge • Bleed rings for Chemical injection/Corrosion inhibition I was able to follow the production flow line on the platform’s main deck, from the Christmas tree (receives subsea pipelines bearing produced crude) to the Manifold (combines the crude being produced from the 9 Wellheads) to the Test separator (that separates the crude into two phases- gas and liquid), and then both the gas line and the liquid line from the test separator continue to the Main Production platform (UBIT PP) as pipelines.
- 12. 12 Christmas trees Wellhead conductors Piping around Test Separator
- 13. 13 Operational Facility Visit On UBIT GP, I saw the following • Control room • Production separators • Gas Generators • Compressors • Pigging system • Instrument hydraulic lines • Flare header • PCV • PSV • Flanges (spectacle blind, blind, weld neck) • Level gauges • Production manifold Some observations • No DCS in the control room • No multiphase meter
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- 15. 15 PROCESS SAFETY DESIGN I studied API RP 14C, and performed Safety Analysis on the following Process components • Separators • Pump • Crude oil cooler • Atmospheric tank • Production flow line + Manifold • Water injection line • Compressor
- 16. 16 EQUIPMENT DESIGN I studied API RP 14E and API 12J, and carried out Design calculations for the following using MS Excel: • A pump (ECNIP) • A separator (ENP2) • Water injection line (ENP2) • Gas lift line (ENP2) • Methanol injection line (ENP2) • Production flow line (ENP2)
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- 19. 19 PROCESS SIMULATION I familiarized myself with Aspen HYSYS, and carried out various simulations of; • Condensate Separation Systems • Dew point plant • Refrigeration systems • Corrosion inhibition models Also attempted modelling of an Existing Production facility (Erha FPSO)
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- 31. 31 OPEX Analysis Cost of Hydrate Inhibitors MeOH = $1.10/lb and 80% EG = $3.10/lb For continuous operation for 5 years Methanol cost of 1431lb = $69 million 80% Ethyl Glycol cost of 4671lb = $634 million Conclusion: Best choice is Methanol, because 80% EG is 9 times more expensive.
- 32. 32 Questions?
- 33. 33 Appreciations Design Engineering Services Manager – Okechukwu Opara Project Manger – Soji Adekogbe Facilities Supervisor(DES) – Emem Abraham Mentor/DES Process Advisor – Syamsul Bahri Buddies – Folu Babatunde; Tomi Osipitan; David Okuonrobo Martin Mweemba; David Coym; Jos Ronde; Pat Maddigan and the entire DES team ENP2 Lead Design Engineer – Helen Nabena Others – Michael Ebiye, Perry Jas-Ikpeme, Dean Adatang, Edwin Okegbe,
- 34. 34 Thank you