Practical Geomechanics

Transcription

1 Practical Geomechanics Baker Hughes - RDS Geomechanics Services 2015 Baker Hughes Incorporated. All rights reserved

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3 Copyright By accepting these materials you agree that all materials provided by Baker Hughes Geomechanics Services on behalf of Baker Hughes, Inc. (Contractor) shall be the sole and exclusive property of Contractor, without limitation or exception. This provision shall extend to any and all training materials, documents, reports, files or computers used by Contractor in conjunction with the rendition of its training course. The copyrighted materials provided by Contractor for training may not be used for course training without the express written permission of Contractor. It is expressly forbidden to make analog and/or digital copies for individuals not involved in the training without the written permission of Contractor.

4 Practical Geomechanics Geomechanics, the science of evaluating the interplay between stresses, pressure and mechanical properties in rocks, plays a critical role in the optimization and efficient exploitation of a hydrocarbon reservoir. However, its role is usually recognized only when some specific challenge is experienced at wellbore or at field scale. The objectives of this course are to explain the principles which describe the interaction among man-made operations (drilling borehole, reservoir injection / depletion of reservoir etc.), rock properties and earth stresses. The course is planned to explain the proactive applications of this knowledge to explore and develop the reservoir in more efficient and informed manner. Who should attend? Anyone interested in understanding the basic principles and direct applications of Geomechanics that govern various drilling and production related issues (Wellbore Stability, Solids Production, Hydraulic Fracturing, Reservoir Geomechanics, Field development optimization etc.) in the process of reservoir development. Audience can be Geologists, Geophysicists, Petrophysicists, Rock Mechanics Specialists, Petroleum Engineers, Drilling / Well Engineers, Production Technologists and Reservoir Engineers. Course Outline Chapter 1: Overview of Geomechanics Building the geomechanical model Applications overview: o Wellbore stability prediction, fracture gradient and lost circulation o Sand production prediction o Casing shear and collapse o Fracture permeability o Fault leakage o Hydraulic fracturing o Compaction and faulting 1

5 Chapter 2: The Tectonic Stress Field Basic Principles Stress magnitudes in normal, strike-slip and reverse faulting stress regimes Sources of stress and First-order global stress patterns Sources of stress perturbation in wells and at field scale Chapter 3: Building a Geomechanical Model Data Inputs and Interpretation Vertical stress, Least principal stress Pore pressure generating mechanisms and prediction methods Impact of Pore pressure on wellbore stability Chapter 4: Rock Deformation and Rock Failure Linear elasticity Effective stress and poroelasticity Viscosity and plasticity Rock strength testing o Types of tests o The Mohr Circle and failure envelope Rock strength from logs Tensile strength Strength criteria Chapter 6: Constraining Maximum Horizontal Stress Frictional constraints on stress orientations and magnitudes Stress concentrations around wells Drilling-induced tensile fractures Wellbore breakouts Maximum horizontal stress azimuth Verifying the geomechanical model Chapter 7: Applications of Geomechanics and Case Studies Wellbore Stability Sand/ Solids Production prediction Fracture Permeability Fault Leakage Hydraulic Fracturing Compaction and Subsidence 2

6 The course is supported with field examples / case studies from Middle East region for better explanation and understanding of geomechanical concepts. Instructor Details: Mr. Satya Perumalla, Geomechanics Discipline Lead (Middle East region): Satya Perumalla is working in Oil & Gas Industry in Geomechanics, Geology & Drilling disciplines for last 18 years at different technical and managerial roles, supporting Sub-surface and Engineering interests of various E&P companies in Middle East, Africa and India. He worked with Schlumberger Geoservices, Shell and British Gas Group for 11 years and then joined Baker Hughes / GMI in Dubai since Satya worked and supervised various consulting projects linking geomechanics to wellbore stability, pore-pressure prediction, reservoir geomechanics and unconventional reservoirs. He has also built and lead the consulting & real-time geomechanics teams for Middle East region since He is an author of SPE technical papers and also a mentor/instructor for Geomechanics training. He received M.Sc (Applied Geology) degree from Indian Institute of Technology- Roorkee, India in 1994 and General Management Diploma from Indian Institute of Mangement- Ahmedabad, India in Mr.Perumalla is a member of AAPG, SPE, EAGE and SEG. 3