Oil & Gas UK Decommissioning Insight 2014

5. Decommissioning Activity in 2013 Analysis has been carried out to assess the level of activity forecasted for 2013 in comparison to what has actually been executed. Operators forecasted activity in well P&A, subsea infrastructure removal and pipeline decommissioning, the majority of which was accomplished as planned.

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2

Decommissioning Activity

Forecast for Activity in 2013 2013 Actual Activity

3

Subsea exploration and appraisal well P&A

11

8

Platform well P&A

13

All activity carried out

4

Subsea development well P&A

2

All activity carried out

5

Mattresses

12

All activity carried out

6

Subsea infrastructure

1,600 tonnes

All activity carried out

Pipelines

22 kilometres

All activity carried out

7

All the platform wells were safely plugged and abandoned in 2013 using an integral rig. The subsea well P&As carried out in 2013 varied in degree of complexity. The subsea exploration and appraisal (E&A) well P&As that were not carried out in 2013 are scheduled to be finished in 2014 following longer P&A durations on some wells.

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