Unlocking barrels on a mature asset Andrea van Overveldt, Maersk Oil DEVEX 9 May 2017
Gryphon FPSO-Producing the Limit Gryphon 3 Fields • Challenges to drill new wells • Well reviews, facility reviews and produce- • the-limit workshops ‘Out of the box’ thinking required to add • more barrels
Subsea Infrastructure Shift focus from topside and well • optimisation to existing subsea infrastructure Back-out effects and daisy chained wells •
page 4 Tullich De-commingling
Focus on 100% Operated Field Old wells shut-in for commingled setup • New manifold •
page 6 Our approach Flow trial and IPSM modelling • performed Subsea scope • Payback period • 100 90 80 (1) (4) (5) (2) P15 70 P15 + P31 P15 P31 (3) 60 P15 + P31 50 40 30 20 10 0
Results Successful Incident-Free execution, • within budget 1,200 bbls added • Payback in 30 days •
page 8 Other opportunities
Chasing Barrels Success increased confidence for other • Gryphon FPSO projects P28 P36/P38 re-route project initiated P12 P27 P39 • North Gryphon P33 Learnings from Tullich project incorporated Metering • Skid P17 P29 P25 P14B Gryphon P19 Cluster P36 TESTLINE P11 Choke Manifold Tullich G1 Skid Manifold P38 P24 P11 P30 P35 P15 P31 P34 P16 Water Injection Skid Gryphon P32 Framo MPM W2 W4 W5 A2 P26 Manifold P20 Production Lines Gas Lines P37 P23 P22 Water Lines Px Producing Wells Gx Wells used as Gas injector W/Ax Water Injection Wells
P36/P38 Re-route P36 prod P17 prod flexible flexible New commingling drop down spool
Conclusions and Lessons Learned Two subsea infrastructure projects • successfully completed Successful approach: • payback period • robust modelling • flow trials • integrated approach with subsea team • Future projects require procurement of • production flowline
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