Research Article
The Research on Borehole Stability in Depleted Reservoir and Caprock: Using the Geophysics Logging Data
Table 1
The value of proportional coefficient
.
| Formation property | Boundary conditions |
No fault | Fault boundary | Normal fault | Thrust fault |
|
Isotropic formation | |
(1) ā | |
(2) |
|
Anisotropic formation | |
(1) ā | |
(2) |
|
|