Research Article
The Mechanism of Wellbore Weakening in Worn Casing-Cement-Formation System
Table 1
Geometric and geomechanical properties.
| | | ID (in.) | OD (in.) | Elastic modulus (psi) | Poisson ratio | Cohesion force (psi) | Friction angle (°) |
| | Casing | 6 | 7 | 2.80E + 07 | 0.3 | Not applicable | Not applicable | | Cement sheath | 7 | 9 | 3.00E + 06 | 0.24 | 8.00E + 03 | 30 | | Formation | 9 | 60 | 6.00E + 06 | 0.2 | 6.00E + 03 | 30 |
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