Session Chairpersons: Obadah Al Sawadi, ZADCO; Alexander Stark, Shell
There is considerable variability as to how operators manage, execute, and assess well integrity activities. The use of integrated management systems can allow for improved preventative and corrective maintenance scheduling, effective exception-based execution, and improved analytical capabilities. Such systems may allow for large numbers of wells to be robustly and efficiently managed to internal and regulatory standards.
Session Chairpersons: Ian Cameron, FMC Technologies; Mike Mullaly, Encore Subsurface Solutions
How does industry handle having wells that initially were not in a thermal field but are now? What considerations need to be made as far as suspended or abandoned wells in these areas? Hear the latest from the Alberta Energy Regulator on developing a regulatory approach to addressing inactive and abandoned well integrity issues in Alberta’s oilsands areas. Imperial Oil Resources will discuss "Non-thermal Cement: is it a concern?" and show real case study examples.
Session Chairpersons: Gregori Colomine, Nexen Inc.; Isaac Khallad, Cenovus Energy
Well integrity starts from the moment an application to drill is submitted. Fit-for-purpose design and sound engineering practices for drilling and completing the well are requirements to ensure the envisioned productive life can be achieved. There are loads to consider in the design stage such as thermal stresses, cyclic loading, formation pressures, geomechanical stress, and these loads have to be managed thru casing design, drilling and completion techniques, cement placement, as well as operating practices. Beyond the loads the well will be subjected to, the potential for corrosion, tight well spacing, and future drills have to be considered as well. Well integrity failures and near misses continue to occur in spite of several design approaches, technologies, and practices developed to manage the risks. This session will share well design, drilling and completion technologies, and best practices developed to reduce likelihood of well integrity failures in typical heavy oil thermal recovery operations.
Session Chairpersons: Alejandro Bello, Statoil; Christian Hamuli, Suncor Energy
Engineers rely on available data to assess risk and make decisions impacting well integrity. Well integrity management system ensures relevant data is acquired, centralized, analyzed, and acted upon in relation to wellbore failure during drilling and completion, operations, suspension, and abandonment. This session seeks to generate a discussion on what could constitute a thermal well integrity management system, why it is needed, and how it would be maintained to enable sound well integrity monitoring and decisions for the life of the well.
Session Chairpersons: Giovanni Bustamante, Statoil Canada Ltd.; Todd Zahacy, C-FER Technologies
With the growth of thermal heavy oil and bitumen recovery projects in Western Canada, and in particular the large number and increasing scale of the steam assisted gravity drainage (SAGD) and cyclic steam stimulation (CSS) projects in the oil sands regions of Alberta and Saskatchewan, significant focus has been placed on wellbore integrity issues, practices and learnings in these applications. There are significant numbers of thermal wellbores, however, in enhanced oil recovery (EOR) projects located in other heavy oil regions around the world, such as in the United States, South America, Asia and the Middle East, and in other high-temperature applications, including the production and injection wells used in geothermal energy projects. In this session, wellbore integrity issues, practices, and learnings related to the thermal wells employed in these non-Western Canadian EOR applications will be shared and discussed.
Session Chairpersons: Adrian Dodds, Kaizen Energy; Nisha Patel, Canadian Natural
Casing strings in thermal wells are subjected to combined loading mechanisms during the well life cycle, and failures may occur as a result of the combined loads. This session will examine fatigue, corrosion, thermal, and geomechanical failure mechanisms that are key causes of casing degradation which ultimately may lead to failure.
Session Chairpersons: Tim Bibby, Southern Pacific Resource Corp.; Sarah Whitton, Schlumberger
Primary cementing operations are the main focus of a well’s cement integrity and can be evaluated with such tools as cement bond logs, pumping reports, and pressure tests. However, as a well ages and is exposed to thermal cycles and stresses, awareness of chemical composition and mechanical properties is critical. This session will explore how technologies such as XRD and XRF are used to evaluate the chemical composition of thermal cements particularly in legacy wells, cement integrity research initiatives, and attempt to answer the question of how long thermal cement is truly good for.
Session Chairpersons: Trevor Ironside, MEG Energy; Isaac Khallad, Cenovus Energy
This session will look at some of the new challenges facing our industry and of the research that is underway.