Figure G-35a shows the failure envelope of a tight (low-permeability) sandstone, which is a petroleum reservoir rock.

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Figure G-35a shows the failure envelope of a ‘‘tight’’ (low-permeability) sandstone, which is a petroleum reservoir rock. If σ1 = 72 MPa and σ= 42 MPa, determine the amount of pore pressure that would be necessary to fracture this reservoir hydraulically.


Figure G-35aa 20 10  20 MPa -10 -10 -20 10 20 30 40 50 60 70  80 MPa

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Structural Analysis And Synthesis A Laboratory Course In Structural Geology

ISBN: 9781405116527

3rd Edition

Authors: Stephen M. Rowland, Ernest M. Duebendorfer, Ilsa M. Schiefelbein

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