Introduction to Petroleum Geomechanics
Date: Monday May 19, 2014
Time: 8:00 AM – 5:00 PM
Place: Capital Suite – ADNEC
Instructor: Surej Kumar Subbiah
This full day short course covers the necessary fundamentals of rock mechanics, the origin of stresses in the subsurface and how in-situ stresses can be understood from wellbore data. It also covers some of the applications of in-situ stress data to solve critical problems in exploration and development. At the end of the short course attendees will be able to use routinely collected and specialized data to constrain the rock mechanical properties and in situ stresses. Several case histories will be shown to illustrate the concept.
Rock Mechanics Theory: This section will cover the basic theory of rock mechanics. Stress and Strain concepts will be address, including: the stress tensor, units (densities, gradients and pressures), stress and strain definitions, stresses and forces, resolving stresses and forces on a plane, Mohr’s circle of stress, states of stress, modes of rock deformation.
Rock Mechanics Laboratory Testing and Interpretation: This section will look at the rock mechanics laboratory testing standards. Review of several example test results and their interpretation will be discussed.
Mechanical Rock properties estimation from Logs and Image interpretation for geomechanical application: This section will cover how to generate the rock mechanical properties using open-hole and case-hole logs. The critical and essential logging program for a geomechanical study will be discussed. An example interpretation exercise using borehole breakouts (drilling-induced tensile fractures) from image logs, in both vertical and deviated wells, will be used to determine the horizontal stress direction and to calibrate the model.
Simple Stress Modeling and Wellbore Geomechanics and Application: It will be demonstrated how key geomechanical concepts and field measurements are used in the study of geomechanics. Finally the applications of the geomechanical model for pore pressure prediction, wellbore stability, sand production and hydraulic fracturing will be introduced.
Introduction to the New Cutting Edge in 3D and 4D Reservoir Geomechanics: A short introduction into how geomechanics evolved will be followed by an introduction into the new cutting edge of reservoir geomechanics and how it is coupled with reservoir engineering for life of the field.
Exercises and Discussion on Real Problems: Exercises will be completed and real case studies will be discussed during this segment of the short course.