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L000037 : Good record keeping and regular P&A meetings pay dividends. Well plugging and abandonment team (P&A) had quarterly reviews looking at KPIs which was good practice and led to being able to identify and implement opportunities as the programme progressed. P&A management meetings require a high level of detail to capture actuals and implement learning to control cost and forecasting given the high number of wells to be abandoned in quick succession.
L000040 : Well P&A sequence The batched approach of rig-less followed by rig based P&A optimised the use of personnel and equipment spreads. This approach is optimal for both cost and freeing up beds for other decommissioning scopes during the rig-less campaign.
L000041 : Data colelction and verification Record keeping needs to be improved - required data was available (hard copy and on system) but very difficult to access and was not seen as a priority during operations. We should recognize the legacy risk of the previous operator and the cost and schedule risk associated with assuming historical records are accurate.