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Module 2: Introduction to Earth Stresses

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Course Credit: 0.15 CEU, 1.5 PDH

The focus of this second webinar in the series will be on defining the issues and the critical role that formation stress, strain (deformation), and formation pressure have on the geomechanics of oilfield applications.
Stress and strain will be defined and the critical aspects (e.g., the role of effective stress) of these will be highlighted. Measurement of these in the field will also be presented. In addition, this webinar will touch on the important role that formation pressure – and specifically changes in formation pressure – plays in oilfield geomechanics. The webinar will also touch on the means to predict and measure formation pressures.

Introduction to Petroleum Geomechanics: Three Part Webinar Series:

This three-part webinar series is focused on introducing the basics of geomechanics and geomechanics services to a wide audience – from service approvers (management), to engineers and scientists who might be called upon to support and evaluate the value of geomechanics efforts but who do not have specific training in geomechanics. While presented as a three-part series, the webinars are laid out in a fashion from more general to more technical.

• Module 1: Overview of Petroleum Geomechanics:
The first webinar is intended to present a high-level explanation and background on geomechanics for individuals who would both consider the need for geomechanics as well as determine the value for a given application. What geomechanics is (and isn’t) will be presented as well as some history and explanation of what geomechanics technical competence might look like.

• Module 2: Introduction to Earth Stresses
• Module 3: Formation Mechanical Properties and Geometry Effects

The second and third webinars are focused on specific technical issues surrounding geomechanics: formation stress, formation pressure, formation mechanical properties (and strength) and the influence of geometry. In a fair amount of detail, stress will be explained as well as its implications. Similarly, formation pressure (and the effect of pressure changes during production) will be presented. Then, formation mechanical properties and strength will be discussed, particularly in light of oil and gas operations (e.g., drilling a wellbore or depleting a reservoir). These two webinars will conclude with a presentation of the criticality of geometric issues, such as fault location and orientation and lithological variations, on geomechanics evaluations.

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Course Chapters

  • 1Module 2: Introduction to Earth Stresses - Chapter 1
    Media Type: Video


Earn credits by completing this course0.15 CEU credit1.5 PDH credits


Dr. Richard Plumb