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7 - Stress, Pore Pressure, Fractures and Faults

from Part I - Physical Properties of Unconventional Reservoirs

Published online by Cambridge University Press:  14 June 2019

Mark D. Zoback  and
Arjun H. Kohli
Mark D. Zoback
Affiliation:
Stanford University, California
Arjun H. Kohli
Affiliation:
Stanford University, California
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Summary

There are a number of interrelated topics presented in this chapter that define the geomechanical state of unconventional reservoirs. As alluded to in Chapter 1 (and expanded upon in Chapters 10–12) the process of hydraulic fracturing and stimulating slip on pre-existing fractures and faults is critical to the success of production from unconventional formations with extremely low permeability. This entire process depends on the interplay between the stress field, pre-existing fractures and faults, pore pressure and the perturbation of pore pressure that occurs during hydraulic fracturing. Chapter 8 discusses how this kind of comprehensive geomechanical characterization affects hydraulic fracturing and Chapter 11 discusses how the geomechanical characteristics of underlying and overlying formations affect vertical hydraulic fracture growth.

Type
Chapter
Information
Unconventional Reservoir Geomechanics
Shale Gas, Tight Oil, and Induced Seismicity
 , pp. 181 - 230
Publisher: Cambridge University Press
Print publication year: 2019

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