OGUK Decom Insight Report 2021

7.3 Forecast Activity in the UKCS over the next decade – A Detailed Snapshot

Northern North Sea & West of Shetland

Central North Sea

Southern North Sea and Irish Sea

Total UKCS

1.083

Platform Wells Subsea Wells Subsea E&A wells

275 208

325 319

483

582 117

55 43

Number of wells to be decommissioned

32

51

Total

515

695

572

1,782

125

Number of Topsides to be removed

14

18

93

704,230

Total weight of topside to be removed (tonnes) Number of substructures to be decommissioned Total weight of substructures to be decommissioned (tonnes)

260,312

241,467

202,451

114

9

11

94

87,974

167,121

94,592

120,595

382,308 328,497

FPSO weight to be removed (tonnes) Subsea structures to be removed (tonnes)

155,005 33,565

152,914 51,343

20,578

3,066 4,155

16,661

Number of mattresses for removal

4,886

7,620

Length of pipelines, umbilicals and cables to be decommissioned (km)

18,458

1,807

3,701

12,950

DECOMMISSIONING INSIGHT 2021

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