Sequential Methods for Coupled Geomechanics and Multiphase Flow

64 CHAPTER 3. STABILITY OF THE DRAINED AND UNDRAINED SPLITS
Dimensionless pressure (P/P i )
Dimensionless pressure (P/P i )
1
0.95
0.9
0.85
0.8
0.75
0.7
0.65
Case 3.2, τ=0.83
Drained
Undrained
Fully coupled
0.6
0 0.05 0.1 0.15 0.2 0.25
Dimensionless time (pore volume produced)
1
0.95
0.9
0.85
0.8
0.75
0.7
0.65
Case 3.2, τ=1.2
Drained
Undrained
Fully coupled
0.6
0 0.05 0.1 0.15 0.2 0.25
Dimensionless time (pore volume produced)
Figure 3.10: Case 3.2 (1D injection–production problem). Evolution of the dimensionless
pressure as a function of dimensionless time (pore volume produced). The results for the
fully coupled, drained, and undrained methods are shown. Top: coupling strength τ = 0.83.
Bottom: coupling strength τ = 1.21.