Integrated Fractured Reservoir Characterization
June 28, 2020
The ways by which a teacher motivates learners to be interested in Science
June 28, 2020
Geomechanics
Fundamentals
WHO SHOULD ATTEND?
Geologists, geophysicists and reservoir engineers with some background on fractures and fractured reservoirs.
COURSE DESCRIPTION
The aim of the course is to introduce basic concepts in geomechanics and demonstrate its application in fractured reservoir evaluation and borehole stability. These calculation of horizontal maximum minimum stress, use of borehole images and acoustic logs in geomechanics and the fluid flow potential of critically stressed fractures.
The course will be conducted in a class with a pc or laptop for each student with Excel. A working knowledge of Excel and Powerpoint is required.
LEARNING OBJECTIVES
Stress conditions of fracturing. Shear and tensile fractures
Elastic, plastic and viscous materials, rock strength, rigidity
Fracture prone weak brittle rocks such as chalk and limestone
Drilling induced fractures and breakouts on image logs
Estimation of minimum and maximum horizontal stress
Slippage, dilatation and leakage tendency of fractures
COURSE CONTENT
Basic principles of stress and strain, total and effective stress 1 day
- Exercise: Shear and normal stress calculation using Mohr circle
Stress and strain relationships. Young modulus, Poisson’s ratio 1 day
- Exercise: Estimation of Young modulus and Poisson’s ratio from acoustic logs
Coulomb and Griffith failure envelopes, uniaxial, triaxial tests 1 day
- Exercise: Calculate fault angles in limestone and shale
Principle stresses and stress regimes in the earth crust, stress polygon 1 day
- Exercise: Estimating maximum horizontal stress from breakouts
Critically stressed fractures and faults 1 day
- Exercise: Determining critically stressed fractures for different pore pressures
About the Instructor
Sait Ismail Ozkaya
Sait Ismail Ozkaya is a structural geologist with a Ph. D. degree from the University of Missouri USA. He also has an M.Sc, degree in Computer Science and strong background mathematics and computer programming. He was a professor at Kuwait University before he joined Baker Atlas in 1996. He has been working an independent consultant since 2003. His specialty is fractured reservoir characterization. He has worked on a vast number of fractured carbonate and clastic reservoirs in the Middle East. His work covers full spectrum from borehole image interpretation to fracture data generation for single or dual porosity reservoir simulation. He has been particularly successful in evaluating fracture flow patterns by integrating petroleum engineering data with geological fault/fracture information. He has used a wide range of software and techniques such as 2D and 3D Discrete fracture network modeling and prediction with Neural Networks. He has written several software packages for fracture analysis and has many publications in structural geology, computer applications and fracture analysis.