SSD – ING-IND/28, 3 CFU (30 hours)
Teacher: prof. Chiara Deangeli
LEARNING CONTENTS PRESENTATION
The course focuses on the mechanical response of sedimentary rock to changes in the state of stress and pore fluid pressure induced by operations in hydrocarbon fields.
EXPECTED LEARNING OUTCOMES
The course aims to provide the student with the fundamentals geomechanics. Upon completion of the course, the student is able to: 1) Identify the appropriate rock mechanical properties to characterize the rock material with reference to a given field problem; 2) Predict the hydro-mechanical response of porous rocks in field operations: drained and undrained conditions; 3) Solve practical problems: wellbore stability, stress change induced by reservoir production and gas injection.
PROGRAMME
- Continuum mechanics. The state of stress and strain; Constitutive laws: Theory of elasticity, plasticity and creep
- Failure mechanics
- Mechanical properties of rocks from lab tests: Drained and Undrained conditions.
- In situ state of stress from field data
- Change in stress and strain state during hydrocarbon production and gas injection
- Stresses around boreholes. Stability during drilling: geomechanical aspects
TEACHING METHODOLOGY
The course is delivered through lectures with the support of slides. After the explanation of a topic, practical exercises/examples are proposed. The student is asked to solve them. The final solution is then presented by the Instructor. Some lectures are delivered by Eni Staff.