This session will provide an introduction for the subsea well integrity workshop along with some objectives. The focus will be on well integrity in the design phase, barrier definition and lifecycle expectations. What are the drivers to establish a successful subsea development, with reliability and minimum intervention? The topics covered in this session will be:
Early phase design and risk mitigation is vital in planning subsea wells to ensure the well’s longevity. Implementing design choices to boost the well’s safety performance, in addition to its financial robustness, should be scrutinised in the design phase. Throughout the lifetime of the subsea well, challenges could be met in terms of barrier integrity, annulus pressure monitoring and management, production optimisation and wellhead fatigue. When analysing and planning subsea wells, other sub-systems have a dramatic impact on the operational planning, such as swapping out the drilling rig. Therefore, there is a need to focus on system engineering aspects when planning to maintain the well’s longevity from a safety and production perspective.
Topics proposed to be covered include:
Einar Molnes, Exprosoft
Reliability Based Completion Design
During the productive lifetime of wells, focus from a well integrity viewpoint should be on maintaining and monitoring the status of well barriers to ensure the wells are operating within acceptance criteria, reflecting risk and safe operating practices. A holistic approach should be taken to risk management, addressing not only the immediate risk of one or more failed barriers but also the risk related to mitigation. Key in understanding well integrity status and deciding on mitigations is:
Per Holand, Exprosoft
Risk Based Leak Rate Acceptance Criteria for Subsea Wells
P&A operations are a key part of the well lifecycle process. Well abandonment operations, particularly in the subsea environment, can be more complex to execute successfully than other operations during well construction and production.
Well integrity best practice requires abandonment to be considered during the planning phase of well construction and completion. Before P&A operations can be planned, an understanding of applicable regulations, standards, and practices is required. The session will address :
Finally, a break-out session will be conducted to cover new technology – what equipment, materials, processes and innovations are needed to bridge the gaps to drive towards effective and safe completion of the well lifecycle in a subsea scenario?
Well integrity as viewed by the legislator is a responsibility of the operator. Oil and Gas companies have their reputation and a responsibility to their shareholders but collaboration between the two parties is inevitable and important. This session will address:
This session will identify the well integrity gaps and build on the journey of collaboration that has already started. Identify solutions in joint effort with oil and gas operators and regulators to define the challenges and suggest a road map for the future.
Birgit Vignes, ConocoPhillips
Well Integrity Portal - Real time Integrity Management