Detailed Description:

Background

Talisman Energy (UK) Ltd (TEUK) engaged ode to undertake abandonment studies for a number of their North Sea and Norwegian wells. These included;

- Claymore A - Piper B - Saltire A - Tartan A - Clyde - Beatrice A, B, C - Gyda

Scope of Work:

There were four main elements to the overall scope of work undertaken by ode. These comprised;

1. Well Abandonment Methodologies
2. Cost Estimates & Schedule
3. New and Emerging Technology Review
4. Final Report

Well Abandonment Methodologies

• Identification of legislative requirements (UK and Norway, incl. relevant UKOOA guidelines).
• Obtaining any relevant TEUK guidelines or policies that would impact abandonment strategies.
• Preparation of well abandonment methodologies and scopes of work for each platform.
• Review of well data and categorise wells into groups to facilitate estimating activities.
• Identification of any 'special' wells that may require particular plugging and abandonment provisions.

Cost Estimates & Schedule

• Preparation of auditable CAPEX estimates on a well grouping and platform basis for all plugging & abandonment (P & A) activities.
• Estimates including engineering & preparatory works, P & A operations, marine & logistics support, TEUK facilities support, rental equipment and consumables, material recovery and disposal, third party costs (EIA, consents etc).
• Estimates prepared assuming current prices with escalation applied in agreement with TEUK as required.
• Identification of key cost drivers and potential growth areas.
• Preparation of a well abandonment project schedule for each platform.

New and Emerging Technology Review

• Identify and assess new and emerging technologies based upon P & A requirements for well groupings, existing platform equipment for abandonment work and deck/mudline configurations.
• Liaison with specialist contractors as agreed and required.
• Perform high-level cost/benefit review.

Final Report

• Preparation of final report
• Present report and study results to TEUK