D250 Evaluation Methods for Shale Reservoirs (Distance Learning)

Event Facts

  • 19 Oct. 2020
  • 20 Oct. 2020
  • 21 Oct. 2020
  • 22 Oct. 2020
  • 23 Oct. 2020
  • 26 Oct. 2020
  • 27 Oct. 2020
  • 28 Oct. 2020
  • 29 Oct. 2020
  • 30 Oct. 2020
Courses consist of a series of 2-3 hour webinar sessions starting at 14:00 London and 08:00 Houston time. Any variation to this will be communicated in the courses joining instructions
Event Code:
10 sessions
Jeff May, Dan Jarvie, John Randolph, Neal Nagel, Rick Lewis
Booking Status:
USD $5,400 (Exclusive of tax)

Course Facts

Course Code:
5 days
Virtual Classroom
4 Continuing Education Units
40 Professional Development Hours
Certificate Issued Upon Completion


Business Impact: This course presents current views on the evaluation methods required to assess new plays, identify sweet spots, and select optimal landing zones.

The evaluation of shale reservoirs presents a challenge: whereas some of the approaches applied are the same as those used for conventional reservoirs, some new tools and many new methodologies have been developed for this rapidly evolving subject. More than ever, the evaluation requires an integrated, multi- disciplinary effort by geoscientists, petrophysicists, and engineers.

Duration and Training Method

A virtual classroom course divided into 10 webinar sessions, comprising lectures, discussion, case studies, and practical exercises to be completed by participants during and between sessions.

Participants will learn to:
  1. Determine the key geologic parameters that control the attributes of shale reservoirs, including hydrocarbon storage and deliverability.
  2. Establish the components of basin analysis required when scoping a new shale play.
  3. Evaluate the variety of depositional processes and changes in environmental conditions recorded in a shale succession and tie that information back to well-log character.
  4. Assess the basic stratigraphic framework of shale reservoirs and understand how systematic vertical changes relate to fabric, composition, texture, geomechanics, and, ultimately, reservoir quality.
  5. Select methods for determining reservoir properties of shales.
  6. Assess geomechanical properties of shales.
  7. Understand basic geochemistry results and apply geochemical techniques to evaluate and target tight oil
  8. Determine petroleum quality and production potential
  9. Assess general gas and oil production potential of candidate shale reservoirs.
  10. Select limiting factors in shale hydrocarbon production such as faults, regional fractures, fluid saturations, natural fractures, and frac barriers.
  11. Assess technologies and factors that can influence hydraulic fracture growth.
  12. Evaluate the role that pre-stack seismic inversion tools can play in characterizing unconventional reservoirs.
  13. Investigate methods to predict geomechanical reservoir properties using seismic data.
This course will present an overview of the mudrock petroleum system and then offer views from technical experts on recent evaluation trends on each of several topics: petrophysics and geomechanics, geochemistry, reservoir and completion engineering, and microseismic monitoring.

The course will cover the following items:

Sessions 1-4: The Mudrock Petroleum System- Deposition, Stratigraphy and Basin Setting (Jeff May)

  • Introduction
    • Mudrock Definition
    • Lithologic Heterogeneity
    • Critical Play Elements
  • Data Mining (Play Reconnaissance) and Regional Basin Analysis (Sweet Spot Evaluation)
    • Published Literature
    • Existing Production
    • Mudlog Shows and Tests
    • Core, Cuttings, Outcrop Samples
  • Stratigraphic Framework
    • Depositional Processes
    • Stratigraphic Cyclicity
    • Well-Log Patterns
    • Sequence Stratigraphy
    • Regional Correlations and Variations
  • Core Description
    • Mudrock Classification
    • Composition and Texture
    • Sedimentary Structures and Depositional Processes
    • Mechanical Stratigraphy
  • Rock Description (Reservoir Quality)
    • Mineralogy
    • Pore Sizes and Pore Throats
    • Matrix and System Permeability

Sessions 5-6: Petrophysics and Geomechanics for Shale Reservoirs (Rick Lewis TBC)

  • Introduction
    • What is a Shale Reservoir?
  • Log Evaluation - Petrophysics
    • Log Responses for Organic Shales
    • Mineralogy Determination
    • Quantifying Kerogen / TOC
    • Porosity
    • Saturation
    • Permeability
  • Log Evaluation – Geomechanics
  • Lateral Evaluation

Session 7: Shale Completions (Neal Nagel)

This section presents explanations of and practical understanding of completion methods for shale reservoirs.

  • Basic shale candidate selection using petrophysical, geochemical and petroleum engineering information
  • Well planning, construction, and stimulation
  • Production forecasting
  • Environmental conservation
  • It is illustrated with examples from five commercial North American shale plays: Barnett, Eagle Ford, Gothic, Horn River and Marcellus.

Session 8: Seismic Interpretation Workflows for Unconventional Reservoirs (John Randolph)

This section will present an overview of current seismic interpretation workflows designed to characterize unconventional reservoirs and also to extract geomechanical properties useful in wellbore/completion designs.  Topics will include:

  • Overview of reservoir responses to seismic waves.
  • Seismic inversion tools.
  • Seismic-well calibration using petrophysical cross plots.
  • Case studies.

Sessions 9-10: Geochemistry for Shale Reservoirs (Dan Jarvie)

  • Conventional vs Unconventional Petroleum Systems
  • Basic Definitions in Source Rock Evaluation
  • Analytical Screening Methods
  • Organic Matter Type and Maturity
  • Origin and Correlation of Natural Gas
  • Shale Resource Data Collection and Integration

Who should attend

All subsurface professionals who are involved in the evaluation of shale resources. Geologists, geophysicists and petrophysicists will learn about recent developments in their own areas of expertise, while drilling, completion, and reservoir engineers, will benefit by increasing their awareness of the geologic attributes that affect targeting and volumetrics.


Prerequisites and linking courses

Participants should have a familiarity with resource plays prior to taking this class, such as is offered in N313 (Evaluating Resource Plays).

Several Nautilus Training Alliance courses expand on concepts discussed in N250. These include N241 (Depositional Processes, Fabrics and Stratigraphic Framework of Mudrocks: Application to Shale Reservoirs, CO and WY, USA), N409 (Improved Hydraulic Fracture Design Using Microseismic Imaging), N944 (Shale Gas and Shale Oil Completions using Multi-Staged Fracturing and Horizontal Wells), and D470 (AVO Reflectivity, Pre-stack Inversion, and Quantitative Seismic Interpretation), N463 (Geological Drivers for Tight-Oil and Unconventional Plays in the Powder River Basin and Applications to Other Basins (Wyoming, USA)).

Jeff May

Jeff has worked in the oil and gas industry for over 30 years: as a research geologist with Marathon Oil Company (1981-1994); as a geological and geophysical consultant with Enron Oil & Gas (1994-1996) and GeoQuest Reservoir Technologies (1996-1998); as an exploration geoscientist with DDD Energy (1998-2001); and with EOG Resources (2001-2011), first as Chief Stratigrapher and most recently as Chief Geologist.

Jeff’s work has entailed sedimentology and sequence stratigraphy from outcrops, cores, and well logs, plus seismic stratigraphic studies of basins and fields worldwide. Areas of expertise include onshore and offshore Gulf of Mexico; onshore and offshore California; Uinta, Green River, Washakie, Denver, Powder River, and Williston Basins; northern and eastern Egypt; and Natuna Sea, Indonesia. At EOG, he provided regional to prospect-scale stratigraphic interpretation and evaluation plus training in support of all divisions. Jeff also conducts a variety of classroom and field seminars on clastic facies, deep-water sandstones, mudrock deposition and stratigraphy, and sequence stratigraphy, most notably for the American Association of Petroleum Geologists, Nautilus, and many universities. In addition, he has published numerous papers and abstracts on deep-water sandstones, sequence stratigraphy, and geophysical interpretation.

Affiliations and Accreditation
PhD Rice University - Geology
MSc Duke University- Geology
BA Earlham College - Geology

Courses Taught
N046: Submarine Canyon, Channel and Slope Systems (California, USA)
N251: Well Log Sequence Stratigraphy: Applications to Exploration and Production
N241: Depositional Processes, Fabrics and Stratigraphic Framework of Mudrocks:  Applications to Shale Reservoirs (Colorado and Wyoming, USA)
N250: Evaluation Methods for Shale Reservoirs

Dan Jarvie

Dan Jarvie is a petroleum systems analyst specializing in assessment of unconventional shale resource systems.  He has studied or been involved in evaluation of both conventional and unconventional petroleum systems around the world including Europe, Africa, Asia (China) and Australia.  His work on these systems includes complete source rock analysis and assessments as well as detailed assessment of gas and oil.

Mr. Jarvie’s work history includes both laboratory analyses and interpretive assessment of these data.  He has published papers on basic source rock characterization, source rock kinetics from open and closed systems for bulk and compositional kinetic parameters, detailed light hydrocarbon analyses, Williston Basin oil and source rock systems, organoporosity-nanopore imaging in association with the Bureau of Economic Geology at the University of Texas, identification of bypassed pay zones, catalytic activity, producibility assessment including pre-drill GOR and API gravity estimations, and numerous papers on unconventional shale gas and shale oil/hybrid resource systems.

He founded Humble Instruments and Humble Geochemical Services in 1987, which were sold to Weatherford International in 2007.  From 2008 to early 2013, Mr. Jarvie worked as a consultant to industry and taught geochemistry classes relevant to unconventional shale resource systems.  He spent 2009-2010 as visiting scientist at Institut Français du Pétrole (IFP) in Rueil-Malmaison, France, where he worked on compositional kinetic modeling with Francoise Behar and shale resource systems in Europe.  From 2013 to 2015 Dan was the Chief Geochemist at EOG Resources, the leading producer of oil in the onshore lower 48 states.  He is also an adjunct professor at Texas Christian University (TCU) and a member of the TCU Energy Institute Advisory Board.

He served in the U.S. Navy from 1969-1975 and was assigned communications responsibility for the Commander, Pacific Submarine Fleet, Pt. Loma Naval Station, San Diego primarily on the USS Sperry AS-12, but also with duty at Treasure Island (San Francisco), Norfolk, VA and Charleston, SC.

Mr. Jarvie earned a B.S. from the University of Notre Dame and was mentored in geochemistry by Wallace Dow and Don Baker of Rice University.  He was the recipient of the EMD Best Poster Award in 2008, the AAPG National Convention Top Ten Oral Award and the AAPG A. L. Cox Award in 2007, the AAPG Levorsen Best Paper Award in 2005, and the AAPG EMD Best Poster Award in 2004.

Affiliations and Accreditation
BS University of Notre Dame - Organic Chemistry
American Association of Petroleum Geologists, Rocky Mountain Association of Geologists, West Texas Geological Society,
American Chemical Society-Geochemistry Division, Society of Petroleum Engineers, The Society for Organic Petrology, and European Association of Organic Geochemists.

Courses Taught
N250: Evaluation Methods for Shale Reservoirs

Rick Lewis

Rick was the developer of the gas shale evaluation workflow that was initially fielded ten years ago and has been applied to more than 3000 wells in North America. In his current position, Rick manages a group responsible for the continual improvement for this workflow, for its introduction and application to the international market, and for the development of workflows for the evaluation of liquids-producing shales. He is also the interface to the Schlumberger research and engineering groups for the development of evaluation technologies for unconventional reservoirs.

Prior to this assignment, Rick was responsible for wireline interpretation development for the central and eastern United States. He is located in Dallas. Rick has also worked for Shell Oil, Battelle, and the U.S. Geological Survey.

Affiliations and Accreditation
PhD California Institute of Technology - Geology
MSc California Institute of Technology - Geology
BSc University of California - Geology

Courses Taught
N250: Evaluation Methods for Shale Gas Reservoirs

Neal Nagel

Dr. Neal Nagel, Chief Engineer at OilField Geomechanics LLC based in Houston, has 30+ years of industry experience, having started as a college professor in 1987 and then joining Phillips Petroleum in the 1989. He has taught extensively since the mid-1980s via open and in-house training courses as well as through SPE and AAPG courses. Nagel worked with ConocoPhillips for nearly 20 years and has been an industry consultant and testifying expert witness in geomechanics and completions since 2009. Nagel, an SPE Distinguished Lecturer in 2004 and again in 2017, is also currently chairman of the Geomechanics Technical Section of SPE, a member of the SPE RDD committee, was chief editor of the 2010 SPE Monograph on Solids Injection, has served on the SPE Drilling and Completions Committee, and is a past local SPE section officer. He is a well-known expert in the geomechanics of Unconventionals and has given many invited SPE, AAPG, HGS, SEG, and SPWLA presentations. Nagel has also authored or coauthored more than 50 technical papers, with 20+ related to Unconventionals, including a keynote presentation at the 2014 SPE HFTC.

Affiliations and Accreditation
PhD University of Missouri-Rolla - Mining Engineering
MSc University of Missouri-Rolla - Mining Engineering
BSc University of Missouri-Rolla - Mining Engineering

Courses Taught
N437: Geomechanics for Unconventional and Tight Reservoirs

John Randolph

John has over 40 years experience in the Oil and Gas Industry and is currently Technical Manager for Nautilus geophysical programs in North America.  During his career, John worked as a seismic interpreter for Texaco, a geophysical project manager for The Louisiana Land and Exploration Company, and he served in the role of Chief Geophysicist for Burlington Resources. John retired from Burlington Resources in 2005 as General Manager of Exploration responsible for the company’s exploration activities in the US, Latin America, the UK, Algeria, and China. While working as Chief Geophysicist, John was also responsible for training and career development for Burlington’s geoscience professionals.  Since 2005, John has also worked as a consultant to independent oil and gas companies and also national oil companies assisting them with various project management issues.

In addition to his passion for teaching seismic interpretation, John enjoys travel, biking, and hiking.  John also taught scuba diving classes for many years.

John and his wife Cheri live in New Orleans, Louisiana.

Affiliations and Accreditation
MS Business Administration
BS Physics and Mathematics
SEG -Member
AAPG - Member

Courses Taught
N080:  Geophysics for Subsurface Professionals
N085:  Introduction to Seismic Interpretation
N165:  Fundamental Concepts of Seismic Techniques

N250:  Evaluation Methods for Shale Reservoirs
N281:  Introduction to Seismic Interpretation for Exploration and Production
N394:  3D Seismic Interpretation Workflow
N408:  Seismic Imaging for Coal
N420:  Introduction to Seismic Interpretation for Coal Mining
N443:  Essentials of Geophysics

John is a contributer to the following courses:
N092:  Reservoir Geophysics
N286:  Seismic Acquisition Principles and Practice

Alternative Dates for this Course