Engineering Prediction of Axial Wellbore Shear Failure Caused by Reservoir Uplift and Subsidence
Injection and production can cause significant regional uplift or settlement. We analytically evaluate the potential for cement-annulus failure in response to injection-induced deformation in a coupled casing/cement/rock poromechanical vertical-well system. Deformation is calculated with respect to the initial near-wellbore stress state, occurring immediately after cement curing. Tensile-failure and shear-failure lengths along this well are predicted using a stress-development-length method. The analytical model is verified by Abaqus modeling. Lastly, a sensitivity analysis identifies critical engineering-well-design parameters for ensuring wellbore-annulus integrity.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Laboratory Directed Research and Development (LDRD) Program
- Grant/Contract Number:
- AC52-06NA25396
- OSTI ID:
- 1481127
- Report Number(s):
- LA-UR-17-20934
- Journal Information:
- SPE Journal, Vol. 23, Issue 04; ISSN 1086-055X
- Publisher:
- Society of Petroleum Engineers (SPE)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 10 works
Citation information provided by
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