reservoir geomecanics

250 Reservoir geomechanics
80
25 MPa
75
75 MPa
BREAKOUTS
20 MPa
72 MPa
70
S Hmax
65
TENSILE
FRACTURES
60
55
S v
50
53.2 MPa
45
45 50 55 60 65 70 75 80
S hmin
S v = 55.1
P p = 42.9
P m = 49
SliFric = 0.6
PoisRat = 0.2
S hmin = 53.2
Azi = 280
Dev = 36
aziSH = 100
IntFric = 1
w BO = 45
Delta T = −26
Alpha = 2.4e − 0.6
YoungMod = 1.9e + 04
Figure 8.10. Analysis similar to Figure 7.10 to constrain the magnitude of S Hmax for the tensile
fractures observed in the deviated well shown in Figure 8.9. The heavy black line indicates the
magnitude of S Hmax as a function of S hmin to cause drilling-induced tensile fractures in a well with
the appropriate deviation, ECD and amount of cooling. Modified from Wiprut, Zoback et al.
(2000). Reprinted with permission of Elsevier.
Note that for a measured value of S hmin of 53.2 MPa that is appropriate for the depth
of interest, an S Hmax value of 72–75 MPa is indicated (other parameters used in the
modeling are discussed by Wiprut, Zoback et al. 2000). This value was incorporated
in the compilation of S Hmax magnitudes compiled for the Visund field (mostly from
vertical wells) presented in Figure 7.13.