Fundamentals of Geosteering Course

Best Practices to Build and Discern a High Confidence Geosteering Model

Colleen Donegan

This course is designed for all consumers of geosteering data and for authors of geosteering models. It will introduce basic principles, types and limitations of data, tools to discern high and low confidence models, and best practices for live operations and retroactive (post-drilling) studies. Participants will learn from real-life examples of structural features, stratigraphic variation, and tool failures. The course will address how to scrutinize and manage geosteering models produced by a third party. It will also consider the value of ‘batch’ geosteering, in which geosteering models of nearby wells are tied/compared to each other for an enhanced view of the subsurface. Geosteering is a high-resolution tool that can play a major role in the successful execution of a drilling program. Adept geosteering practitioners will save their companies time and money, enhance economic returns, and provide valuable insight to improve understanding of the reservoir. Participants in this course will gain a solid foundation in both the creation and contextual application of high confidence geosteering models. Read more...

Who It’s For
• Operations geologists
• Geosteering specialists
• Drilling and completions engineers

What You Will Learn
• Interpret LWD gamma ray for geosteering
• Identify high-confidence control points
• Manage well placement within target window
• Recognize and correct model uncertainty

Why It Works
• Built on real-world geosteering workflows
• Focused on decisions, not just theory
• Emphasizes clarity in communication and execution

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Course contents

    Chapter 1 - Model Discernment

    01-00 - Introduction (8 min.)  Sample Lesson

    01-01 - Geosteering Basics (17 min.)

    01-02 - Components of a Geosteering Model (24 min.) Quiz

    01-03 - Reading a Geosteering Model (23 min.)

    01-04 - Spotting Red Flags (17 min.) Quiz

    Chapter 2 - Pre-Spud Operations Geology

    02-01 - Intro To Ops (6 min.)

    02-02 - Pre-Spud Packet (13 min.)

    02-03 - Creation of a Geosteering Model (13 min.)

    02-04 - Pre-Spud Meeting (14 min.) Quiz

    02-05 - Language Of Targeting (10 min.)

    02-06 - Designing the Curve to your Advantage (7 min.)

    Chapter 3 - Geosteering a Well

    03-00 - Chapter 3 Prologue (2 min.)

    03-01 - Introduction and Recap (20 min.)

    03-02 - Minor Faults In the Vertical (10 min.) Quiz

    03-03 - Tracking Planned Landing Point (12 min.)

    03-04 - Landing The Curve (16 min.) Quiz

    03-05 - Adjustments to Planned Landing Point (15 min.) Quiz

    03-06 - Intro to Geosteering in the Lateral (13 min.)

    03-07 - Control Points (16 min.) Quiz

    03-08 - Changing the Plan Line (6 min.)

    03-09 - LWD Tool Issues (3 min.)

    03-10 - Faulting in the Lateral & My Million-Dollar Mistake (15 min.)

    03-11 - What To Do If You Get 'Lost' (4 min.) Quiz

    Chapter 4 - Retroactive Geosteering

    04-01 - Geosteering Data After TD (10 min.)

    04-02 - Closing the Loop (19 min.) Quiz