Decommissioning Insight 2017
DECOMMISSIONING INSIGHT 2017
In the Dutch sector, the few wellhead oil platforms that were originally equipped with a fixed drilling derrick have had these removed, which means all platform well P&A will be carried out with a jack-up rig or rig-less methods where available.
For subsea wells requiring a rig, this will typically depend on water depth. For wells located in shallower water, a jack-up rig is typically used as they operate at a lower cost.
Figure 8: Forecast Rig Type for Well P&A Across the North Sea, 2017 to 2025
Platform Wells
NNS and WoS
CNS
SNS and Irish Sea
Integral rig
98%
Integral rig Modular rig
78%
Modular rig Other rig-less 19% Stand-alone jack-up 55% To be decided 21% 5%
Stand-alone semi-submersible
11% Stand-alone jack-up 11%
2%
Danish Continental Shelf
Norwegian Continental Shelf Stand-alone jack-up 40% Integral rig 47% More than one rig type 13%
Stand-alone jack-up
90% 10%
Other rig-less
Subsea Wells
CNS Other rig-less
SNS and Irish Sea Stand-alone jack-up 69% To be decided 31%
NNS and WoS
11%
Other rig-less 11% Stand-alone jack-up 11% Stand-alone semi-submersible 78%
Stand-alone jack-up Stand-alone semi-submersible
2%
84%
To be decided
3%
Danish Continental Shelf Stand-alone jack-up 100%
Norwegian Continental Shelf Stand-alone jack-up 91% Semi-submersible 7% To be decided 2%
Combined Wells
Dutch Continental Shelf (platform and subsea combined) Stand-alone jack-up 50% Other rig-less 30% To be decided 20%
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