Web-based Class Project on Rock Mechanics REPORT PREPARED AS PART OF COURSE CEE 544: ROCK MECHANICS WINTER 2015 SEMESTER INSTRUCTOR: PROFESSOR DIMITRIOS.

Slides:



Advertisements
Similar presentations
Griffith Cracks Flaws Make the World Beautiful! Were it not for the flaws, rocks and mountains would have been perfectly boring.
Advertisements

SINTEF Petroleum Research The strength of fractured rock Erling Fjær SINTEF Petroleum Research 1.
Web-based Class Project on Geoenvironmental Remediation Report prepared as part of course CEE 549: Geoenvironmental Engineering Winter 2013 Semester Instructor:
Stress and Deformation: Part II (D&R, ; ) 1. Anderson's Theory of Faulting 2. Rheology (mechanical behavior of rocks) - Elastic: Hooke's.
Coalbed Methane Extraction in the Sydney Basin Gas and Coal Outburst Seminar November 20, 2002.
Terra Slicing Technology Overview.
Stress and Deformation: Part I (D&R, ; ) The goal for today is to explore the stress conditions under which rocks fail (e.g., fracture),
Using Induced Seismicity to Predict and Monitor Reservoir Permeability Pathways STRM LLC.
Distribution of Microcracks in Rocks Uniform As in igneous rocks where microcrack density is not related to local structures but rather to a pervasive.
Hydrocarbon Migration Istvan Csato University of South Carolina Department of Geological Sciences Petroleum Geology Class 745 Spring 2002.
Should Horizontal Wellbores be Logged? An analytical approach to hydraulic fracturing entry positioning and completion equipment selection.
Hydraulic Fracturing Best Management Practices Environmentally Friendly Drilling Program John Michael Fernandez Matthew Gunter.
Drilling Engineering - PE 311 Rock Failure Mechanisms
Simulation of Pillar Failure Using FRACOD 2D. Objective n To test the capability of FRACOD 2D in predicting failure of a pillar between two rock excavations.
Simulation of Borehole Breakouts Using FRACOD. Objective n To test the capability of the fracture propagation code FRACOD in predicting borehole breakouts.
ATMATM PETE 406 UBD ATMATM ATMATMATMATM PETE Underbalanced Drilling, UBD Lesson 9 Benefits of Underbalanced Drilling UDM - Chapter 3.
Chapter 3 Rock Mechanics Stress
Geology 3120 Powerpoint notes available online at:
1 MODELING OF HYDRAULIC FRACTURES. 2 HYDRAULIC FRACTURES Hydraulic fracturing can be broadly defined as the process by which a fracture initiates and.
Announcements This week's lab: 1-3 PM with Andrew McCarthy. Please come prepared with specific questions. There will be no lecture this Wednesday! Please.
Regional Climate Change Water Supply Planning Tools for Central Puget Sound Austin Polebitski and Richard Palmer Department of Civil and Environmental.
Announcements Midterm next Monday! Midterm review during lab this week Extra credit opportunities: (1) This Thurs. 4 pm, Rm. Haury Bldg. Rm 216, "The role.
Joints and Shear Fractures
A Generalized Frame work Viscous Fluid Flow… P M V Subbarao Professor Mechanical Engineering Department I I T Delhi Construction of Navier-Stokes Equations.
Hydraulic Fracturing 101. What is Hydraulic Fracturing? Hydraulic fracturing, or “fracking”, is the process of drilling and injecting fluid into the ground.
Web-based Class Project on Ground Improvement Report prepared as part of course CEE 542: Soil and Site Improvement Winter 2014 Semester Instructor: Professor.
Thermal Strains and Element of the Theory of Plasticity
Principal Stresses and Strain and Theories of Failure
Schlumberger Public Scope and Application of Pressure Transient Tests in CBM and Shale Gas reservoirs Baijayanta Ghosh Reservoir Domain Champion Testing.
We greatly appreciate the support from the for this project Interpreting Mechanical Displacements During Hydromechanical Well Tests in Fractured Rock Hydromechanical.
Physics A First Course Matter and Energy Chapter 8.
Mechanical Properties
Web-based Class Project on Rock Mechanics
Perforating Requirements for Fracture Stimulation
Slip-line field theory
Underbalanced Perforating. èEarly tests by Exxon showed that flow patterns and perforation geometry prevent the cleaning out of an appreciable percentage.
How Faulting Keeps Crust Strong? J. Townend & M.D. Zoback, 2000 Geology.
Faults as fluid flow barriers and their role in trapping hydrocarbons Grp 2.
Lecture 7 Mechanical Properties of Rocks
Course No.: MEBF ZC342 MACHINE DESIGN
Chapter 3 Force and Stress. In geology, the force and stress have very specific meaning. Force (F): the mass times acceleration (ma) (Newton’s second.
February 13-15, 2006 Hydromechanical modeling of fractured crystalline reservoirs hydraulically stimulated S. Gentier*, X. Rachez**, A. Blaisonneau*,
Hydraulic Fracturing Xiaofeng Liu, Assistant Professor Department of Civil and Environmental Engineering University of Texas at San Antonio
Schlumberger / Client Confidential
Failure I. Measuring the Strength of Rocks A cored, fresh cylinder of rock (with no surface irregularities) is axially compressed in a triaxial rig.
Engineering materials. Materials and civilization Materials have always been an integral part of human culture and civilizations.
1 Structural Geology Force and Stress - Mohr Diagrams, Mean and Deviatoric Stress, and the Stress Tensor Lecture 6 – Spring 2016.
An Application of Reactive Charge Technology to High Strength Formation and High Overbalance Environments: Charge Design and Operational Challenges EWAPS-12-2.
Mohr-Coulomb failure Goal: To understand relationship between stress, brittle failure, and frictional faulting and to use this relationship to predict.
Petro Data Mgt II- Drilling and Production Petroleum Professor Collins Nwaneri.
An Automated Approach to Wellbore Stability Analysis Petroleum Engineering Senior Design II GROUP L: QUENTYN GUGLIELMO HUGH HANNUM CARSON POLLAT BRONSON.
Department of Petroleum Engineering Texas A&M University College Station, TX (USA) Antu Xie Modelling Concepts for Fracture.
Principal Stresses and Strain and Theories of Failure
SPE What Factors Control Shale Gas Production Decline Trend: A Comprehensive Analysis and Investigation HanYi Wang, The University of Texas at Austin.
Copyright January, Prof. Basuony El-Garhy Geotechnical Engineering and Foundations Civil Engineering Department Faculty of Engineering What is CE.
Mohr’s Circles GLE/CEE 330 Lecture Notes Soil Mechanics
Lab #3: Strat Columns: Draw to scale Lab #3: Strat Columns: Draw to scale Includes: (left to right) Age (era and period) Name of unit Thickness of unit.
Lecturer: Dr. Frederick Owusu-Nimo
STRESS SUMMARY Stress= amount of force per unit area (units Pa) Force= mass * acceleration (units N)
Numerical Modeling for Hydraulic Fracture Prediction on Fused Silica Surrogate Cylindrical Samples Varun Gupta.
Hydraulic Fracturing 101.
7. Yield Criteria of Metals
Lecturer: Dr. Frederick Owusu-Nimo
Workshop on Megathrust Earthquakes and Tsunami
Chapter 3 Force and Stress
Formation Fracture Pressure
Physical Properties of Rocks
The Traction Vector and Stress Tensor
ME Consultancy Services
Web-based Class Project on Geoenvironmental Remediation
Presentation transcript:

Web-based Class Project on Rock Mechanics REPORT PREPARED AS PART OF COURSE CEE 544: ROCK MECHANICS WINTER 2015 SEMESTER INSTRUCTOR: PROFESSOR DIMITRIOS ZEKKOS DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING UNIVERSITY OF MICHIGAN Historical, theoretical and practical perspectives on hydraulic fracturing Prepared by: Austin Boles With the Support of:

Overview 1. History 2. Uses of hydraulic fracturing (HF)  In-situ stress measurement  Reservoir stimulation  Conventional vs. HVHF 3. The theory  The Mohr circle basics  Fracture orientation, regional stress field, pressure considerations, fluid penetrability and viscosity, etc. 4. What really happens in practice…  Premature screen-outs, high treating pressures, perforation practices, arbitrarily oriented wellbores, etc.

History First experimental well in 1949 (Kansas) Replaced explosives as dominant fracturing method

In-situ Stress Measurement Assumptions:  Homogeneous, elastic, isotropic rock Need to know:  Tensile strength of rock mass  Fluid pressure Result: initial stresses at the point of fracture.

Reservoir Stimulation Purpose is to increase flow of formation fluids (hydrocarbons) to the wellbore. Conventional vs. High Volume Hydraulic Fracturing

Theory Fracture initiation, propagation and orientation are dependent on:  Wellbore fluid pressure  Mechanical properties of the formation  Prevailing in-situ stress regime  Orientation of the wellbore  Fluid penetrability and viscosity Most of the literature relies on Mohr-Coulomb failure criterion

Effect of Fluid Pressure Differential stress, orientation of principal stress, cohesive strength important! High differential stress in the tensile regime produces regular, parallel fractures. Hydrostatic conditions produce many randomly oriented fractures. Cosgrove, 1995

From a pressure point of view… Hubbert and Willis, 1957 *Breakout pressure is less with a penetrating fluid.

What happens in practice? Premature screen-outs: breakout pressure required exceeds design pressures of wellbore or wellhead equipment. “Near wellbore tortuosity” High treating pressures: Diagnostic tool to evaluate fracture growth patterns. Simultaneous propagation of multiple fractures. Role of perforation practices: orientation of perforations will determine fracture initiation sites and orientations. Arbitrarily oriented wellbores: Fracture turning, twisting, and linking can all occur.

More Information More detailed technical information on this project can be found at: mechanics