PET E 694: Advanced Topics in Petroleum Engineering Wellbore Geomechanics

PET E 694

Course Contents

Stress tensor, strain tensor, stress-strain relationship, pore pressure, effective stress, Equilibrium equation (6 sessions)

Stress with constant and variable pore pressure around boreholes (3 sessions)

Tensile and shear strength, mechanical properties from laboratory testing (2 sessions)

Core representativeness and influence of sample size, core alteration, core handling, sample preparation

Uniaxial tensile test, UCS, triaxial test, hydrostatic tests, TWC tests 

Strength profiling

Rock properties from wireline logs (1 sessions)

Density, Porosity, elastic modulus, poisson's ratio, UCS

Strength estimation from physical properties

Clastic rock contents vs. rock mechanical properties

Geological aspects of petroleum geomechanics (2 sessions)

In-situ stress regimes

Overburden stress, min and max horizontal stress, and pore pressure

Hydraulic fracturing (2 sessions)

Fracture initiation and formation breakdown

Fracture orientation, growth and confinement

Thermal effects on fracturing pressure

Leak-off and extended leak-off tests, minifrac tests, Step-rate testing

In situ stress assessment (1 session)

Wellbore stability during drilling (4 sessions)

Borehole failure criteria

Borehole breakouts

Stability of vertical and slanted wells

Lost circulation

Mud window

Interaction between shale and drilling fluid

Sand production (2 sessions)

Forces on sand grains

Sandstone failure

Critical drawdown for onset of sanding

Sand transport