Session Managers: Glen Benge and James Heathman
The term “back to basics” often conjures up thoughts of training classes and teaching the fundamentals. But that’s only a part of it. Even subject matter experts can get caught up in the flavour of the day when it comes to (mis)applying new technology, or simply not paying sufficient attention to detail. All too often, we are guilty of assuming too much and, in the process, ignoring the obvious. This session will take us back to basics in the sense of re-examining application of fundamentals—quality control, correct lab testing, attention to details and contingencies—as our first line of defence for getting good cement jobs.
Speaker: Jean Michelez, Kwantis
Session Managers: Deryck Williams and Scott Jennings
This session will explore the laboratory testing methods of the cement slurry and set-cement properties as they apply to gas migration, mechanical properties, and special and foam cements.
Discussions will focus on the following questions:
Session Managers: Axel-Pierre Bois and Siavash Ghabezloo
Cementing operations should be designed to ensure the integrity of cement sheath for the entire life of the well. Among the various causes of loss of zonal isolation, three of them will be discussed in this session. First, the session will focus on cement placement and on how to prevent cement channelling and fluid mixing at mud/slurry interface; special attention will be dedicated to the design of casing centralisation. Second, the session will highlight the principal mechanisms at the origin of gas migration, through cement matrix or along interfaces, and the methods that can be used to evaluate the risk of their occurrence. Finally, attendees will discuss how an initially tight cement sheath can lose its integrity during the life of the well. This topic will be approached from two perspectives: understanding the physics and evaluation of the risks of zonal isolation.
Session Managers: Jean-Yves Lansot and Nevio Moroni
In recent years, oil companies have ventured more frequently into deepwater and HP/HT areas as well as areas containing unconventional resources (shale oil and gas) in the search for hydrocarbons. This trend is likely to continue, or even accelerate, in the next few years and we are likely to see increasingly challenging well conditions in water depths and well temperatures. There are several aspects of deepwater and HP/HT wells that make them particularly challenging, from an engineering perspective, through all phases of the process - construction, production, intervention and abandonment. This session will focus on the issues and solutions surrounding deepwater and HP/HT wells cementing during the well construction phase.
Session Managers: Barbara Kutchko and Glen Benge
Wellbore cement is a critical component of reservoir management by providing isolation of high-pressure reservoir fluids and gases. High-pressure gases may provide both a physical and chemical challenge, so careful characterization of how gases impact cement integrity is essential for applications ranging from unconventional gas reservoirs to geologic storage of CO2. This session will look not only at addressing the challenging area of gas migration prevention in shallow reservoirs, but also improving the understanding of factors affecting CO2 storage and safety in geologic formations. It will also look at the impacts of acid gases (CO2 and H2S) on cement and explore if indeed H2S is a concern for cementing.
Session Managers: Jens Wollenweber and Bill Carey
This session is focused on well integrity and cementing issues under extreme conditions. Three presentations will consider problems particular to geothermal wells, permafrost/arctic environments, and steam injection wells. The session will include discussions of challenges associated with high temperatures, aggressive fluids, steam, and extreme cold. Field experience and studies will be used to illustrate issues in achieving and maintaining zonal isolation. Differences in cement formulations and cementing operations will be discussed including an open assessment of the state-of-the-art and key areas requiring improvement.
Cementing is a multi-skill process for which success requires not only excellence in various disciplines but also the ability to solve communication challenges and issues between disciplines. This thought-provoking session will explore a variety of perspectives and review best practices and methodologies that, when applied, ensure cement-sheath integrity for the life of the well.
Session Managers: Dominique Guillot and Mileva Radonjic
The global well population is approximately 1.8 million wells, of which 30-35% have issues with sustained casing pressure. (This was discussed in the SPE webinar which took place on 27 March 2013.) The presence of leaky wells mean cement zonal isolation may be compromised; remediation operations may be required, and when the time comes for abandonment these issues will need to be resolved. This session will be divided into three topics: cement barriers, remediation, and plug and abandonment. All of these topics have the common thread of well design.
This session will aim to achieve the following:
Session Managers: Ramy Eid and Matteo Loizzo
Ensuring a bright future for zonal isolation will require three main ingredients: innovation, talent and regulatory understanding/compliance.
As such, this session will focus on understanding the various active stakeholders and their recent focus on zonal isolation and well integrity. It will also discuss both applied and fundamental research ideas (for both the short and the long term) and will include a brainstorming discussion on how the industry should hire, train, and retain talent.
Some of the session key-deliverables include: