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L01-3 Total vertical stress gradient onshore and offshore, and vertical effective stress
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Classroom Contents
Reservoir Geomechanics - Fall 2019
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- 1 L01-1 Introduction to PGE 334 and impact of geomechanics
- 2 L01-2 Pore pressure gradient and rock bulk mass density
- 3 L01-3 Total vertical stress gradient onshore and offshore, and vertical effective stress
- 4 L02-1 Total vertical stress offshore, effective stress at the seafloor
- 5 L02-2 Total vertical stress from logs
- 6 L02-3 Non-hydrostatic pore-pressure, disequilibrium compaction
- 7 L03-1 Porosity trend with disequilibrium compaction
- 8 L03-2 Calculating pore pressure from undercompacted shale
- 9 L03-3 Horizontal stresses and ideal orientation and shape of hydraulic fractures
- 10 L04-1 Horizontal well azimuth, horizontal stress magnitude and direction
- 11 L04-2 Scalar, vectors and tensors
- 12 L04-3 The stress tensor, normal and shear stresses, positive convention
- 13 L05 Homework 2 step by step (total vertical stress and pore pressure)
- 14 L06 Principal stresses, the effective stress tensor, the (small) strain tensor
- 15 L07-1 Young modulus and Poisson ratio -- towards 3D Hooke's law
- 16 L07-2 Axial loading test #1: Young modulus and UCS
- 17 L07-3 Axial loading test #2: Young modulus and UCS
- 18 L08-1 UCS laboratory report
- 19 L08-2 Data analysis for Young Modulus
- 20 L08-3 Data analysis for Young Modulus and Poisson ratio
- 21 L09-1 3D Hooke's law (isotropic llinear elasticity)
- 22 L09-2 The compliance and stiffness elastic matrices, application to uniaxial-strain stress path
- 23 L09-3 Effective lateral stress coefficient according to linear isotropic elasticity
- 24 L10 Fracture gradient explained by linear elasticity, tectonic strains/stresses
- 25 L11 Homework 4 - Elasticity problems and reservoir rock compressibility
- 26 L12 General solution to an elasticity problem, Real rocks: anisotropy and visco-plasticity
- 27 L13 Rock tensile strength and shear strength
- 28 L14-1 Brazilian test to measure indirectly tensile strength
- 29 L14-2 Confined loading of a coffee package under vacuum
- 30 L14-3 Shear strength: unconfined and confined loading
- 31 L15 Rock failure and permeability, the triaxial test apparatus, homework problems
- 32 L16 Strength anisotropy, compression yield cap and brittle to ductile transition
- 33 L17 Faults on the Earth's shallow crust, fault mapping, fault strike and dip, stereonet
- 34 L18 Fault strength and ideal orientation
- 35 L19 Ideal orientation of faults in SS and R regimes, and 3D Mohr circle
- 36 L20 Solving for normal and shear stress with the 3D Mohr circle
- 37 L21 Applications of projection of stress on fault/fracture planes
- 38 L22 Introduction to wellbore stability and Kirsch solution
- 39 L23 Drilling-induced tensile fractures and shear failure (breakouts)
- 40 L24 Drilling mud window and orientation of breakouts
- 41 L25 Fracture gradient and stability of deviated wellbores
- 42 L26 Well stability: thermal effects, loss of filtercake, clay swelling, anisotropy, frac gradient
- 43 L27 Review of fault and wellbore stability
- 44 L28 Hydraulic fractures in nature and caused by well testing (LOT and DFIT)
- 45 L29 DFIT test results and Step Rate Test
- 46 L30 Fluid-driven fractures: break down of fluid and mechanical processes
- 47 L31 Fracture modes, fracture toughness, and hydraulic fracture models
- 48 L32 Determination of fracture height with stress logs and hydraulic fracture simulators
- 49 L33 Multiple stage hydraulic fracturing and fracture interaction
- 50 L34 Multicluster fracturing and microseismicity
- 51 L35 Microseismicity, Induced Seismicity, and EUR for unconventionals
