Research on the mechanism of fault sliding casing damage under the effect of water immersion deterioration of rock mass.

ABSTRACT: Hydraulic fracturing-induced casing deformation has garnered significant attention, yet the effects of water immersion-induced rock deterioration remain underexplored. This study employs finite element analysis to investigate casing shear deformation in fault-sliding scenarios under water immersion deterioration. A 3D casing cement sheath-formation system model with varying water immersion parameters was developed to analyze casing mechanical properties and deformation. Results indicate that an 80% reduction in cohesion increases casing Mises stress by approximately fourfold, significantly impacting casing forces. A 60% reduction in the internal friction angle raises Mises stress by about 20%, exerting a weaker influence compared to cohesion changes. Decreasing the fault sliding surface fr

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC12675499 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature