PGE 334 Reservoir Geomechanics

Overpressure

SHmax from breakouts

Introduction - Why is geomechanics important in petro. eng.?

SHmax from breakout data

Finding SHmax from tensile fractures?

Subsidense

Extended Leak-off and step rate tests

Mohr Failure Envelope

Mohr's Circles

Matlab Example

Finding SHmax from tensile fractures?

Lower hemisphere projection

Sterss and principal stresses at the wellbore in deviated wells

Hoek-Brown Failure Criterion

Thermoporoelasticity

Matlab example for deviated wells

Wellbore rotations

Mohr-Coloumb Failure Model

Production induced faulting

Critially stressed crust theory

Porosity and perm. reduction due to depletion

Tensile strength of rocks

Mohr's Circles (cont.)

Geomechanical Case Study

Creep and stress relaxation

Discussion of computatoinal aspects of complex yield surfaces

Types of tests on rocks

Sand production

Hydraulic Fracturing Overview and Impact

Stress rotations

Overpressure

Shmax from tensile fractures?

Stress changes with depth

Pore pressure at depth