Seung Wan J.
Subsea Engineer
Experience
Apr 2025 - Jul 2025
4 monthsGeoje-si, Korea, Republic of
Subsea Engineer
RPK Marine
- Joined Tidal Action sailing from Geoje, South Korea to Rio de Janeiro, Brazil.
- Upgraded and tested BOP stack, surface accumulators, diverter control panel, choke & kill manifold, and standpipe manifolds.
- Performed troubleshooting of upgraded BOP functions on MUX POD, EHBS POD, and acoustic POD.
Jan 2023 - Mar 2025
2 years 3 monthsGeoje-si, Korea, Republic of
Subsea Engineer
COSMOS Marine Service
- Performed preservation, maintenance, and reactivation of subsea well control equipment on stacked rigs: Stena Evolution, West Draco, West Dorado, Pacific Zonda, Tidal Action.
- Overhauled and tested components from BOP stack, marine riser system, and diverter system for recertification.
- Replaced fasteners in BOP stack as per API SPEC 20E.
- Performed pre-deployment test on BOP.
- Operated and monitored BOP stack, BOP control system, BOP handling equipment, diverter system, and riser system during SIT in shallow water.
Mar 2019 - May 2020
1 year 3 monthsSubsea Controls Engineer
Pacific Drilling
- Performed preventive maintenance and monitored MUX control PODs, EHBS POD, acoustic control system, surface panels, PLC, UPS, and field instruments to ensure normal operation.
- Diagnosed faults and abnormal symptoms in subsea control system to identify root causes.
- Performed POD swap, PLC software update, and switch configuration.
- Terminated and tested MUX test cables for BOP simulators.
- Reviewed code and witnessed FAT of BOP control system software upgrade, providing feedback to correctly implement technical requirement.
- Assisted mechanical maintenance and operation of subsea equipment, including 5-yearly maintenance and recertification.
- Reviewed work plan and material requirement for API SPEC 20E bolt upgrade project for Pacific Drilling fleet.
- Created procedure to measure and record bolt pre-load using ultrasonic measuring device for API SPEC 20E bolt upgrade project.
Sep 2014 - Feb 2019
4 years 6 monthsSubsea Technician / Senior Subsea Technician
Pacific Drilling
- Performed routine maintenance and monitored subsea well control equipment to ensure normal operation.
- Deployed and retrieved BOP and marine riser system.
- Performed between-well maintenance and pre-deployment test.
- Performed corrective maintenance on subsea equipment when required, while minimizing non-productive time (NPT).
- Overhauled and tested BOP subsea equipment for 5-yearly maintenance and recertification.
- Witnessed FAT and commissioning of subsea equipment.
Jul 2013 - Sep 2014
1 year 3 monthsGeoje-si, Korea, Republic of
Project Engineer
Pacific Drilling
- Contributed to construction project of ultra-deepwater drillships for Pacific Drilling fleet.
- Tracked and updated commissioning progress.
- Reviewed commissioning procedures.
- Witnessed commissioning of hullside and topside equipment.
Summary
8+ years of offshore and onshore experience on ultra-deepwater drillships as Subsea personnel. Frequently travelled from site to site based on demand. Performed operation and maintenance of high-pressure, heavy-weight, safety-critical equipment including subsea blowout preventers (BOP), HPU, diverter system, marine riser system, choke and kill system, motion compensators, pressure vessels, and air compressors.
Languages
Korean
NativeEnglish
AdvancedJapanese
IntermediatePortuguese
ElementaryEducation
Oct 2006 - May 2010
The University of Texas at Austin
Bachelor of Science · Petroleum Engineering · Austin, United States
Certifications & licenses
ACS 400/500 Operator and Technical
BOSIET
CA-EBS
Dril-Quip Subsea Wellhead Connectors
GE H4 Wellhead Connectors
Hydralift Motion Compensation Maintenance
Hydratight Ultrasonic Bolt Load Monitoring
IWCF Drilling Well Control Level 3 (Combined Surface and Subsea) Training
OEUK
SEACON Connector Handling & Maintenance
Shaffer 6th Generation BOP Mux Electro-Technical Maintenance
Shaffer Equipment Mechanical
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