S. Bakheim
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Laboratory Characterization and Modeling of Creeping Shale as Well Barrier Open
In certain shale formations, time-dependent deformation causes the annulus between the borehole and casing to close naturally, offering the potential for a self-sealing barrier without annulus cement in petroleum well. In this study, the m…
“Characteristic features of shale barrier materials” Open
Deep wells in soft formations are completed with a steel tube ("casing") that isolates the well from the surrounding rock. The annulus between the casing and the rock is usually left open in long sections of the well, thus creating a poten…
View article: Can Heating Induce Borehole Closure?
Can Heating Induce Borehole Closure? Open
The current study shows that heating a cased borehole in low-permeability shale rock can induce plastic deformation, leading to the closure of the casing annulus and decreasing annulus connectivity. The thermally induced borehole closure i…