Decommissioning Insight 2019

DECOMMISSIONING INSIGHT 2019

7.7 Subsea Infrastructure Decommissioning

F i gure 32: Subsea Decommissioning Activity in the UKCS 2019, to 2028

Northern North Sea & West of Shetland Item Quantity Pipelines 1,157 km Mattresses 3,015 Subsea Structures 21,325 tonnes

Central North Sea

Item

Quantity 2,017 km

Pipelines

Mattresses

8,131

Subsea Structures

34,282 tonnes

Southern North Sea & Irish Sea Item Quantity Pipelines 1,751 km Mattresses 4,887

Subsea Structures

4,003 tonnes

Northern North Sea & West of Shetland Central North Sea Southern North Sea & Irish Sea

Total UKCS

Subsea Structures to be Removed (Tonnes)

59,610

21,325

34,282

4,003

Mattresses for Removal

16,033

3,015

8,131

4,887

Length of Pipeline to be Decommissioned (km) Length of Pipeline to be Removed (km) Length of Umbilicals to be Decommis- sioned (km) Number of Umbilicals to be Decommissioned Number of Fields with Pipeline Decommissioning Activity

4,925

1,157

2,017

1,751

651

40

458

153

1,309

252

420

637

245

70

129

46

104

19

39

46

60