SPE Workshop: The Duvernay Liquids Rich Shale - What Makes it Different and How Do We Optimize It? 18 Oct 2017 Civic on Third Calgary, Alberta, Canada


Tuesday, October 17

08:00 - 17:00
Contemporary Topics for Liquid-Rich-Shale (LRS) Reservoirs: Fluid Sampling, Characterization and Gas-Injection EOR
Instructor(s) Dr. F. Brent Thomas

This course begins with reservoir fluid properties starting with the most fundamental definitions and then expanding to how fluid properties are measured and reported. Common problems, encountered in sampling and characterization, are discussed by using multiple field examples. A thorough presentation of methods to achieve the best characterization for bubble-point fluids and retrograde gases is included; recent developments (2017) are elucidated. The roles of confinement and fracture intensity on apparent phase behavior are also discussed. Finally, the science of Lean-Gas cycling for EOR in shales is introduced and analyzed.

Wednesday, October 18

07:00 - 08:00
07:15 - 08:00
08:00 - 09:00
Opening Plenary Session
Moderator(s) Paul Ohaegbu, Director Oil & Gas, BMO Capital Markets


James Navratil, Kaybob Duvernay Manager, Chevron Canada Resources
Roy Stadlwieser, Alberta Development Manager, Shell Canada
John Gorman, President, Halliburton Canada


The Duvernay Liquid Rich Shale – What makes it different and how do we optimize it.
Despite the low commodity price environment, activity in the condensate rich area has not slowed down due to the operators’ capability in drilling and completing these wells cheaper and faster. The number of wells drilled and completed has increased exponentially to 315 wells in mid 2016 with the longest completed well length increased from 1200m to 3000m.

Our distinguished plenary speakers will discuss their view on this emerging play, their respective organizations stand on the emerging unconventional shales in North America in general and the Duvernay in particular. Their thoughts on the current commodity price, the technology and operational considerations, the importance of responsible development and the growing challenges of unconventional energy sources.

09:00 - 09:15
09:15 - 10:45
Session 1: The Duvernay's Unique Challenge in Estimating Resource in Place Phase Behaviour and Mobility
Session Chairpersons Ali Esmail, Encana; Nkem Ejiofor, Hammerhead Resources; Matthew Johnston, Shell Canada

This session will focus on a broad range of sub-surface topics including geochemistry, core analysis, pore distribution, PVT and in situ fluid characterization and mobility.


1. Considerations for Lean-Gas Cycling in the Duvernay

  • F.Brent Thomas, Mehdi Noroozi and Ronnel April, Weatherford Labs Canada

2. Phase Behavior and Reservoir Characterization: The Spectrum of Liquid Yields and Petroleum in Place for the Duvernay

  • Ali Esmail, Encana

3. Fox Creek Duvernay PVT - When Does It Matter?

  • Jeff MacDonald, Shell Canada
10:45 - 11:00
11:00 - 12:30
Session 2: Forecasting Duvernay Condensate Yields and the Volatility Drivers
Session Chairpersons Brian Hamm, McDaniel & Associates; Adam Preston, Alberta Energy Regulator; Aaron White, Murphy Oil Corp.

Forecasted CGR/GOR differs significantly from original reservoir in-situ phase conditions due to the inherent fluid volatility; stable producing yields that are observed do not resemble initial non-depleted producing yields.  The initial-to-stable yield variability, volatility driver and forecasting methods specific to the Duvernay will be examined.



1. Can Desorption Explain CGR/GOR Behavior While Flowing Above Psat in the Duvernay? Insights from History Matching Using Adsorption in a Compositional Simulation

  • Patrick Miller, Repsol

2. Factors Defining Drawdown Management in the Duvernay Gas Condensate Region

  • Osita Aniekwe, Chevron Canada Resources

3. What Rate Management Impacts in the Oil Window and It's Operational Limitations

  • Aaron White, Murphy Oil Corp.
12:30 - 13:30
Networking Lunch

Sponsored by:


13:30 - 15:00
Session 3: Reservoir Characterization - Integrating Geoscience with Completion Design to Maximize Production
Session Chairpersons Lisa Song, Chevron Canada Resources; Irma Eggenkamp, Shell Canada

The various Duvernay CGR and production profiles depend on geological, petrophysical and geomechanical properties. This session will showcase operators’ strategies in landing zone and completion recipes for different Duvernay rock types.


1. Advanced Core Analysis in Support of Multi-Fractured Horizontal Well Characterization for Primary and Enhanced Recovery Applications

  • Chris Clarkson, University of Calgary

2.  Integration of Reservoir and Geomechanical Properties for Optimization of Completion Design

  • Tara Branter, Repsol

3. Isotopes, Fractures, and Facies: Understanding the Origin of the Hydrogen Sulfide in the Duvernay Formation, Fox Creek, Alberta, Canada

  • Matthew LeForte, Encana
15:00 - 15:30
15:30 - 17:00
Session 4: Well Spacing and Completion Design
Session Chairpersons Mathew Fay, Shell Canada; Patrick Miller, Repsol; Audrey Rasmussen, Paramount Resources (ACL) Ltd.

To maximize the economic value of the Duvernay, it’s critical to balance well spacing with stimulation intensity and capital costs.  This session will explore different operators strategies to achieve this balance, using both theory and empirical data.


1. Interfering With My Data – A Study on Well Spacing Effects

  • David Bonar, Encana

2. Water: Rock Ratios and Stimulated Rock Volumes Estimated from Produced Water Composition

  • Mathew Fay, Shell Canada

3. Well Spacing and Proppant Intensity Optimization Study

  • Autumn Linklater, Chevron Canada Resources
17:00 - 18:30
Welcome Reception

Sponsored by: