In situations like blowout or hydraulic fracturing, excessive fluid pressure may cause leaking in the casing in shallower parts of the formation. The resulting high pressure may form a cylindrical crack around the wellbore. An analytical solution for stress distribution and displacement along a cylindrical crack formed between the casing and the formation is provided in this paper. The crack is assumed to be opened by uniform fluid pressure exerted on both sides of the crack. This solution has a wide range of applications from failure analysis of fibers in manufacturing composite materials to wellbore integrity in petroleum and subsurface engineering problems.
An Analytical Solution for Microannulus Cracks Developed Around a Wellbore
Contributed by the Petroleum Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received January 15, 2015; final manuscript received May 5, 2015; published online June 2, 2015. Editor: Hameed Metghalchi.
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Taleghani, A. D., and Klimenko, D. (November 1, 2015). "An Analytical Solution for Microannulus Cracks Developed Around a Wellbore." ASME. J. Energy Resour. Technol. November 2015; 137(6): 062901. https://doi.org/10.1115/1.4030627
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