Course Details

Objective

• Fundamental understanding of petroleum geomechanics.
• Data requirements for geomechanically studies
• Application of geomechanics to wellbore applications
• The use of the Mechanical Earth Model in geomechanically studies

Content

Day 1

Fundamentals and experimental rock mechanics

• • The stress tensor, units, principal stresses, strain, resolving stresses on a plane, construct Mohr's Circle and analyze stress, elasticity and elastic properties, effective stress, internal friction, cohesion, modes of rock deformation, unconfined compressive strength, Mohr-Coulomb failure
  • Experimental rock mechanics, uniaxial and triaxial testing, thick wall cylinder tests, scratch testing, true triaxial tests, tensile tests, analyze results

Day 2

Stress, Pore pressure and the Mechanical Earth Model

• • Principal earth stresses, regional and local stresses, World Stress Map, Andersonian classification of faults, overburden stress, horizontal stress orientation, borehole breakouts, drilling-induced tensile fractures, image logs, horizontal stress magnitudes, leak-off tests, fracture gradients
  • Origins of pore pressure, methods for measurement, methods for estimation, vertical and horizontal methods, Eaton’s method, real-time approach
  • Concept and construction of the Mechanical Earth Model, data requirements and types of input data

Day 3

Wellbore geomechanics and wellbore stability

• • Wellbore geomechanics, state of stress in the wellbore
  • Modes of rock deformation in the wellbore, the effect of well azimuth and inclination, simple calculations
  • Wellbore deformation in fractured rock masses and non-classical rock failures
     

Day 4

Applications

• • An introduction to planning for wellbore stability and real time operations
  • Sand production and management, causes of sand failure, experimental evidence, an introduction to screenless completion design for sand prevention
  • Hydraulic fracturing, process of hydraulic fracturing, geomechanically factors effecting fracture development and simple calculations.
  • Reservoir behavior, an introduction to compaction and subsidence, well integrity, use of 4D seismic in geomechanics and the effects of injection (pressure maintenance, waste disposal and gas storage)

Day 5

Case study practical

• • Working in teams, an opportunity to put into practice the geomechanics learnt during the week to design a wellbore stability plan for a proposed high angle well.

Methodology

This training program is lecture-based and customized to the needs of the audience, providing meaningful experience for personnel that work in petroleum plants.Daily sessions include formal presentation, prepared in the Power Point, interspersed with directed discussions and case study.In addition to formal lectures and discussions, the delegates will learn by active participation through the use of problem-solving exercises, group discussions, analysis of real-life case studies etc. All attendees receive a course manual as a reference.

• 30% Lectures
• 30% Workshops and work presentation
• 20% Group Work& Practical Exercises
• 20% Videos& General Discussions