This session will welcome attendees to the workshop and outline some of the objectives of the workshop. It will also highlight that this workshop is part of a series of workshops that have been hosted by the SPE around the globe. This session will also have a Keynote Speaker to help set the context and background of well integrity within today’s world.
This is an interactive working session to define well integrity and the risk associated with impaired and failed well barriers. The discussion will focus around risk identification, assessment of risk, and the overall potential impacts from the identified risks (license to operate, financial, HSE). We will also discuss various risk assessment methods, corresponding risk rank mitigation steps, and demonstrate how wells can be comparatively risk ranked across a field, an asset, business unit, or even an entire company.
Deliverables include: an interactive definition of well integrity, a brief discussion of how to identify and assess risk, and a summary of the benefits and challenges of the different risk assessment methods discussed.
Land wells have unique attributes as compared to off-shore wells including but not limited to age, proximity to the public and useable-quality water and use of a single barrier. Discuss and share industry, personal and company views of the risks and integrity issues particular to land based wells.
Key industry documents regarding well barriers will be discussed in this session. The session will begin with a presentation by Tore Fjågesund, a NORSOK D-010 working group member. He will discuss the use of barriers, barrier type identification, discussing the importance of redundancy, verification and the monitoring of barrier performance. An overview of existing API recommended practices addressing barriers will then be presented by the session leaders. In addition, API 90-2 “Annular Pressure Management for Onshore Wells,” expected to be issued in 2014, will be introduced. This document extends and adapts the concepts of the performance monitoring of barriers in offshore wells (API RP 90-1) to onshore applications. With this information, attendees will then discuss how this standard and these recommended practices can best be used to improve the design, operation, and ultimately the reliability of barriers in onshore wells.
Public awareness of well integrity has increased over the last few years partly as a result of high profile incidents and increased drilling activity in North America. This closer scrutiny of the industry and its methods is placing greater responsibility on both the industry and its regulatory bodies to become more accountable and visible in how they mitigate and control risks. Well Integrity Standards and Practices have been developed for offshore wells but these may not always be suitable for application to land wells. Land wells are often operated with single barriers. Additionally, a large number of land wells are much older and were constructed to a different standard. Therefore, there is a need to tackle these issues and develop appropriate standards and regulations, but what should these be?
The session will explore API recommended practices and standards, challenge assumptions about cement integrity and address casing design. The API Standards section will address well integrity from the perspective of API HF-1. The Cement Integrity section will explore stresses in the cement sheath during and subsequent to hydraulic fracturing and discuss implications during the life of the well. The Casing Design discusses issues particular to the stresses induced during hydraulic fracturing. Casing, cement and the formation all interact, and an understanding of industry practices during and after fracturing operations will aid in the understanding of well integrity.
This session will highlight a number of diagnostic methods and tools to confirm well integrity barriers that range from very simple and inexpensive to more complex and costly. We will begin with a group discussion around well barrier failure recognition followed by a summary of some of the basics in leak detection and leak location using a pump, an echo meter, a pressure gage, and mathematics. There will also be an opportunity to review and rework case studies that showcase the basic leak detection techniques as well as more complex logging or casing inspection tool options.
Inactive wells may have been suspended, temporarily abandoned, or simply shut-in, and they often are neglected with respect to ongoing monitoring and maintenance. Why spend money on wells that aren’t making money? This may seem logical from a financial standpoint, but not necessarily from a long-term integrity point-of-view. Discuss and share how you manage to keep your inactive wells from becoming “out-of-sight, out-of-mind”.
Where is our industry in terms of measuring and monitoring well integrity? We will ask ourselves how our own organizations are measuring well integrity. Then we will discuss possible monitoring components: key performance indicators, audits, incidents, incident investigation, and benchmarking. At the end of the session we would like to have ideas how we can communicate our well integrity performance within the industry, and to the public.
After a busy two and a half days, the workshop co-chairs will summarize the workshop and review any items that have been left in the “parking lot” as part of an open discussion. This session will also provide an opportunity for delegates to discuss what should be the format and subjects of future SPE Well Integrity industry knowledge sharing events.