Negative Other LL with DNO

Oselvar (A-1 H, A-2 H, A-3 HT2) – P&A

PSA Finding

• AkerBP has established a barrier verification and status document for each well, and deviations from these results in MoC. However, the MoC created reflected poorly the change in barrier status for each well, but was more general and did not always reflect the latest information.
• The above-mentioned established system does not sufficiently highlight the necessary requirements for documentation (e.g. matters concerning HSE).
• A large sand zone, referred to as DP7 and the cap rock, Seal 7 was part of AkerBP’s barrier strategy was not adequately documented in relation to size, leakage from below, volume, HSE and pressure build-up from a permanent perspective.

PSA Comments

• Ensure MoC document is tailored to the specific case, not being general, including latest information and barrier status.