Monday, November 26
Tubular structures in thermal applications are subject to unique design challenges that cannot be addressed with conventional methods. In conventional design, the structure “fails” when thermally induced loads yield the pipe, but thermal wells often must operate under such conditions and industry experience demonstrates that wells can do so reliably. Designing a structure that remains stable requires knowledge of strain-based design: the distinction between strength and stiffness, the effects of variability in strength and stiffness, load path dependencies, post-yield material behavior, and strain localization. Collateral considerations for resistance to environmental effects, geomechanical loads and production management can also challenge intuition developed in conventional well design. In this course, participants will learn to “think strain, not stress” for well structure design and gain exposure to other aspects of thermal well design.
This one-day course is an introduction to gas-liquid flow patterns in horizontal pipes for complex case of steam at saturated condition at injector; gas-lifting at producers and steam hammer envelopes are discussed. Different two-phase flow mechanistic pattern maps such as Taitel–Dukler (1976) and Kattan–Thome–Favrat (1998) models and empirical methods such as Beggs and Brill will be discussed.
- Gas-liquid flow patterns
- Introduction to Steam Hammer
- Liquid Pool modeling
- Liner-Deployed FCDs modeling
- Analytical modeling of steam circulation
Tuesday, November 27
The intent of the Keynote session is to look at our Thermal Industry and how Well Integrity and Thermal design is a part of the greater whole. It is a higher/broader look at the economic drivers of our business. How does Heavy Oil survive our price environment and how do we make thermal projects profitable and competitive in order to attract investments to our business? What are the implications of GHG and emissions and how are they changing way we have always designed our projects? How are regulations changing to make our projects safer and better for the environment, yet still stay competitive in the world market?
- Darcy Spady, 2018 SPE International President
- Bryan Helfenbaum, Executive Director of Advanced Hydrocarbons, Alberta Innovates
Casings used in thermal applications experience much more severe conditions due to temperatures they are exposed to as well as formation shear impacts. Since those impacts cause casings to exceed their elastic limit, post-yield evaluation of those materials becomes critical.
In addition to the experiments performed to understand post-yield behavior, the industry is engaging in numerous modeling and reliability assessments to understand the post-yield behavior of thermal casings and connections.
This session provides the latest progress in understanding the post-yield behavior of casings and connections in thermal applications.
|10:00-10:30||193359||Structural Reliability Study Of OCTG Casing and Connections for Thermal Well|
|10:30-11:00||193361||Post Yield Strain Fatigue Experiments to Validate Low Cycle Methodology for Tubular and Connections|
|11:00-11:30||193363||Unified Basis for Thermal Casing/Connection System Design|
|Alternate||193367||Casing Design Evaluation On Geothermal Well Considering Pressure & Temperature Effects: A Case Study On Well TSR-66, South Sumatera, Indonesia|
|13:00-13:30||193362||SAGD Production Casing Failure Diagnosis and Repair|
|13:30-14:00||Invited Presenter||Composite Wrap Repair to Restore Casing Integrity|
|14:00-14:30||193346||Three-stage SAGD Liner Intervention to Remediate a Liner System Using Concentric Coiled Tubing Jet Pump Technology|
|Alternate||193374||Increase Exposed Bitumen Reserves by Optimizing Wellbore Placement in Oil Sands with Extra-Deep Azimuthal Resistivity LWD Service|
|Alternate||193368||CT Diagnosis of Well Trajectory and Completion Decision Guidance for SAGD Paired Horizontal Wells|
Thermal stimulation processes place unique demands on a primary cement sheath. Temperature changes drive chemical changes within the cement and generate severe mechanical loads on the cement. Ensuring long-term zonal isolation requires a cement that is designed specifically to address these concerns. This session will provide a view into novel techniques and technologies for improving cement performance in thermal wells.
|15:00-15:30||193350||Design and Application of a New High Performance Lightweight Thermal Cement|
|15:30-16:00||Invited Presenter||Improvements in Cement Quality from Blend Design and Placement Practices in SAGD Infill Wells|
|16:00-16:30||Invited Presenter||Thermal Cement Designs and Effects on Properties for Thermal Stimulated Wells|
Wednesday, November 28
The focus of this session is on the technology advancements in thermal completions regarding flow control devices (FCDs) and sand control. Flow and sand control have always been a key factor in ensuring the productivity and longevity of thermal wells. Improvements in flow and sand control will continue to be of great value as wells continue to produce for longer periods of time in continually changing and evolving environments.
|08:00-08:30||Invited Presenter||Qualification and Implementation of an Erosion Resistant FCD for SAGD Producer Wells|
|08:30-09:00||193353||Flow Control Devices in SAGD - A System-based Technology Solution|
|09:00-09:30||193370||Material Selection for Thermal Inflow Control Device Manufacturing to Minimize the Silica and Calcium Carbonate Scaling Potential|
|Alternate||193347||Impact of Anisotropic Stresses on the Slotted Liners Performance in Steam Assisted Gravity Drainage Process|
|Alternate||193375||Experimental Assessment of Wire-Wrapped Screens Performance in SAGD Production Wells|
Vacuum Insulated Tubing (VIT) is used in both thermal production operations and in other challenging environments such as permafrost applications. While the technology is known to reduce heat loss and maintain well integrity, the economics of VIT in thermal projects is still a matter of discussion. VIT design, field performance and project economics are to be covered at the session.
|10:00-10:30||193352||Experience With the Vacuum Insulated Tubing (VIT) Utilization at Gas Fields in the Northern Part of Western Siberia|
|10:30-11:00||193365||Thermodynamic Analysis of a Modified Autonomous Flow Control Device for SAGD Sub-Cool Management|
|11:00-11:30||Invited Presenter||Vacuum Insulated Tubing (VIT)-Does It Work? Can the Additional Cost Be Justified?|
|Alternate||193358||Visualization of Fines Migration In the Flow Entering Apertures through the Near-wellbore Porous Media|
Join us for a thought provoking session where you can ask the “Experts” on all things related to thermal well integrity and design. Our panel has an average of more than 25 years’ experience in CSS and SAGD and have likely seen whatever you have experienced, know what you are currently experiencing and can probably tell you what you are about to experience in your projects. Take this opportunity to tap into this valuable resource and learn from those that have been a part of insitu thermal projects in Canada since the early days of commercial development.
Confirmed panelists to date include:
- Russ Bacon – formerly Imperial Oil
- Don Hennessey – Hennessey Consulting (formerly AER)
- Mirko Zatka – Canadian Natural Resources
- Gina Wozney – GRW Consulting
|1500-1700||Break Out #1: Operating Practices – $$$ and Sense
Operating practices have a direct impact on the well integrity and longevity of thermal wells. Decisions about how to operate thermal wells also need to be based on well design, which is related to reservoir characteristics and production technology.
Well startup, and managing subcool and workover operations—in regards to potential well failures and project economics—are just a few aspects of operating practices to be discussed in this breakout session.
Moderators: Uliana Romanova, Baker Huges, A GE Company; Gina Wozney, GRW Engineering
Break Out #2: Wellbore Cleanouts and Remediation – When Do You Give Up?
Similar to other wells, thermal wells require workovers and maintenance tasks. However, due to the severity of the thermal service loads and the corresponding operating conditions, the wellbore maintenance frequency can be dramatically increased relative to the non-thermal arena. At some point in the well life, operational inefficiency and deteriorating economics start to play a role in the decision making process of “What to do next?” with a certain wellbore. Loss of sand control, wellbore deformations, corrosion issues, poor cement jobs (including surface casing vent flows), improper wellbore placement and poor recovery/injectivity can all become issues that dramatically increase the OPEX of a given well. When do you give up on a well and what do you do next? Re-drill? Re-enter? Abandon and walk away?
Moderators: Mark Chartier, Noetic Engineering 2008 Inc.; JJ Forsyth, Cenovus Energy; Jesse Stevenson, Variperm Canada Ltd.
Break Out #3: Identifying the Risks Associated with Longer Lateral Well Designs and Operations
Moderators: JJ Forsyth, Cenovus Energy; Doug Hollies, Codeco Oilsands Engineering; John Krener, Chevron; Colby Sutton, RGL Reservoir Management Inc.
As our industry continues to strive for performance and economic improvements, one area operators are pushing the limits for horizontal in-situ thermal development wells is the length of the lateral sections drilled.
There is a perception that longer wells should be more profitable through the reduction of the cost of surface equipment per meter of reservoir accessed. Whether this is true or not will depend on the effective design, execution and production life of these longer wells. The challenges of running longer completions in shallower SAGD fields and distributing steam in low operating pressure reservoirs are a few key concerns. Regardless of the technical challenges, when your project management team says drill further, completion and production teams need to be ready. Join this break out group to discuss design considerations, execution strategies, and operational tactics that are key factors for success with extending producer and injector laterals in thermal projects.
Thursday, November 29
This session provides advancements on evaluation, design, implementation, detailed performance assessment, and re-design of flow control and sand control devices. Discussions will highlight modelling methodologies, optimizations for completions designs, erosion risks and mitigations, and product performance and benchmarking. This knowledge will add value and help to improve profitability for both the operator and service provider.
|08:00-08:30||Invited Presenter||Methodology for Flow Control Deployment|
|08:30-09:00||193364||Optimization of Placement of Flow Control Devices under Geological Uncertainty in Steam Assisted Gravity Drainage|
|09:00-09:30||193349||Staged, Risk-Based Approach for Assessing Erosion Resistance of SAGD Flow Control Devices|
|09:30-10:00||Invited Presenter||Experience with Sand Control Methods at the Leismer SAGD Project|
|Alternate||193354||SAGD Circulation Phase: History-Match Field Data in Lloydminster Reservoir Using a Discretized Thermal Wellbore Modelling Simulator|
|Alternate||Invited Presenter||Non-Magnetic Motors for Better Wellbore Placement|
In this session, thermal well liner design and integrity will be presented from a diverse series of perspectives. This includes a new theoretical approach for assessing the impact and relationship between Flow Control Devices and steam breakthrough, examination of failed, pulled stand-alone sand control systems and the apparent factors that contribute to damage, poor performance and plugging, a parametric structural analysis investigation into the factors that influence liner integrity under operational- and thermal-induced formation stresses.
|10:30-11:00||193369||On Subcool Control in the SAGD Producers. Part II: Localized Hot Spots Effects and Optimization of Flow Control Devices|
|11:00-11:30||193355||Standalone Sand Control Failure: The Role of Wellbore and Near Wellbore Hydro-Thermo-Chemical Phenomenon on the Plugging and the Flow Performance Impairments of the Standalone Sand Screen|
|11:30-12:00||193356||Addressing Thermal Loading Uncertainties for Liner Design|
The continued success of thermal recovery operations in a technically challenging and an increasingly more competitive and disruptive global energy industry can be largely attributed to the creativity and perseverance of the operators and service providers engaged in this sector. In this session, presentations will include: description of a novel dual-rod BOP and stripper system to allow for the rapid, safe conversion of CSS wells from steam injection to production, results of an experimental investigation into factors that affect the flow performance and effectiveness of remedial wire-wrapped screen and premium screen scab liners coupled with FCDs, and the use of a novel, high-resolution ultrasound-based imaging logging technology for assessing the condition and damage mechanisms of casing, liners, FCDs, and wellheads.
|13:00-13:30||193372||Reducing Operational Cost and Accelerating Oil in a Thermal Field with Cyclic Steam Stimulation Operation in South Oman|
|13:30-14:00||193366||An Experimental Investigation into the Sand Control and Flow Performance of the Remedial Tubing Deployed Scab Liners in Thermal Production|
|14:00-14:30||Invited Presenter||High Resolution Downhole Imaging Technology to Collect Visual Information from Wells|
|Alternate||193357||SAGD Circulation Phase: Thermal Efficiency Evaluation of Five Wellbore Completion Designs in Lloydminster Reservoir|
|Alternate||193373||Casing Failure Using Machine Learning Algorithms: Five Case Studies|
This session will highlight the analysis of well integrity issues that SAGD wells can encounter - from in-situ stress and strain imparted on the liner to the impact of cumulative corrosion on integrity of the wellbore.
|15:00-15:30||Invited Presenter||Modelling Cumulative Internal Corrosion in a SAGD Well|
|15:30-16:00||Invited Presenter||Summary of FEA Modeling Showing Potential Issues with Strain Localization on the Liner Shroud|