Cavity Expansion and Fracture Propagation in Dunnville Sandstone

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Cavity Expansion and Fracture Propagation in Dunnville Sandstone

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Fracture initiation of a pressurized circular cavity in Dunnville Sandstone was observed using a cavity expansion apparatus and particle tracking technique called digital image correlation. Different far-field stress configurations were used to determine its effect on the fracture initiation and propagation. The results of the tests show fracture initiation as a percent of the borehole breakdown (peak) pressure was determined to decrease as the far-field stress increased. In addition, the crack opening displacement at the borehole wall measured at peak pressure increased as the far-field stress increased.


Faculty Advisor: Joseph F. Labuz Department of Civil, Environmental, and Geo-Engineering College of Science and Engineering

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This research was supported by the Undergraduate Research Opportunities Program (UROP).

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Sharpe, Jacob D. (2015). Cavity Expansion and Fracture Propagation in Dunnville Sandstone. Retrieved from the University Digital Conservancy,

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