Research Article
Predicting the Healthy Operation of Heavy Oil Well Casings in Permafrost Regions
Table 4
Parameters of the contact properties.
| Layer | Soil type | Tangential direction | Cohesive force (MPa) | Damage | Friction coefficient | Elastic sliding | Initial value | Evolution | Stability coefficient |
| 1 | Gravel and sand | 0.624 | 0.05 | 0.1 | 0.05 | 0.1 | 0.001 | 2 | Silt | 0.531 | 0.1 | 0.4 | 0.1 | 0.2 | 0.001 | 3 | Silty sand | 0.624 | 0.05 | 0.75 | 0.05 | 0.1 | 0.001 | 4 | Clay | 0.268 | 0.1 | 1.0 | 0.1 | 0.2 | 0.001 | 5 | Sand | 0.624 | 0.05 | 0.75 | 0.05 | 0.1 | 0.001 | 6 | Clayey silt | 0.531 | 0.1 | 0.5 | 0.1 | 0.2 | 0.001 | 7 | Silty clay | 0.268 | 0.1 | 0.75 | 0.1 | 0.2 | 0.001 | 8 | Silt | 0.531 | 0.1 | 0.4 | 0.1 | 0.2 | 0.001 | 9 | Sand | 0.624 | 0.05 | 0.75 | 0.05 | 0.1 | 0.001 | 10 | Silt | 0.531 | 0.1 | 0.4 | 0.1 | 0.2 | 0.001 | 11 | Sand | 0.624 | 0.05 | 0.6 | 0.05 | 0.1 | 0.001 | 12 | Clay | 0.268 | 0.1 | 1.0 | 0.1 | 0.2 | 0.001 | 13 | Silty sand | 0.624 | 0.05 | 0.75 | 0.05 | 0.1 | 0.001 | 14 | Clay | 0.268 | 0.1 | 1.0 | 0.1 | 0.2 | 0.001 |
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