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Participants in this course will learn about the fundamentals of Geomechanics and the role Geomechanics plays in well programming and operations. This course will cover the stress tensor, experimental rock mechanics, principal earth stresses, and the origins of pore pressure (including methods for measurement of pore pressure). Other topics that will be covered in this course include the concept and construction of Mechanical Earth Models (MEM), wellbore geomechanics, modes of rock deformation, and wellbore deformation.
This course will use lectures and case studies to help participants amplify their learning and skills gained throughout this course. Participants will learn from experts in the Geomechanics field about how to plan for wellbore stability, implement geomechanic solutions while drilling, the concepts of wellbore strengthening, and drill bit mechanics. Participants will also use case study exercises to build a MEM and apply it to a proposed high angle production well from a field development plan.
Fundamental of Rock Mechanics
The course will begin with an introduction to the fundamental aspect of rock mechanics and a review of experimental results that have been published in industry papers. After this participants will see how geomechanics can be used to design wells and support drilling operations. Participants will then learn about the stress tensor in particular units, principal stresses, strain, resolving stresses on a plane, constructing Mohr's Circle and analyzing stress, elasticity and elastic properties, effective stress, and other rock mechanic fundamentals. Lastly the attendees will learn about experimental rock mechanics, uniaxial and triaxial testing, thick wall cylinder tests, scratch testing, true triaxial tests, and tensile testing.Day 2
Earth Stress and Pore Pressure
The second day will begin with participants taking a look at stress in the Earth, including principal earth stresses, regional and local stresses, the world stress map, Andersonian classification of faults, overburden stress, horizontal stress orientation, borehole breakouts, and drilling-induced tensile fractures. Other topics that participants will learn about include image logs, horizontal stress magnitudes, leak-off tests, and fracture gradients. Participants will then examine the detailed origins of pore pressure, measurement methods, methods for estimation, vertical and horizontal methods, Eaton’s method, and a real-time pore pressure approach.Day 3
Mechanical Earth Model, Wellbore Geomechanics, and Wellbore Stability
The third day participants will focus primarily on the Mechanical Earth Model (MEM), wellbore geomechanics, and wellbore stability issues. This day will begin with participants reviewing the concepts and construction of the MEM, including detailed data requirements and required input data types. With a working MEM, the participant will then learn how to manage wellbore geomechanics and the state of stress in and around the wellbore. Modes of rock deformation in the wellbore, the effects of well azimuth, and inclination will also be covered. Participants will also learn about basic geomechanics calculations. The day will end with participants reviewing wellbore deformation in fractured rock masses and non-classical rock failures.Day 4
On day four participants will learn about downhole drilling geomechanics with particular emphasis being placed on planning for wellbore stability and integration of geomechanics into the drilling plan. Participants will then investigate the intricacies of implementing real-time geomechanics while drilling. Participants will also look at how geomechanics is used to provide wellbore strengthening in order to avoid mud losses in depleted formations. To conclude this day, participants will review drill bit mechanics.Day 5
Geomechanics Case Studies
On the last day, participants will work in teams in order to put into practice the geomechanics knowledge and skills learned during the week to build an actual MEM. Participants will then use the MEM to design a wellbore stability plan for a proposed high angle well from a field development plan.
This course is intended to benefit drilling personnel, such as drilling engineers and operations and planning engineers, involved in the planning of well operations.
Participants should have a basic knowledge of drilling, as well as an awareness of well planning and programming.
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