Modeling of Wellbore Stability in Shales including Proelsatic, Chemical and Thermal Effects, M.Sc. Thesis Sharif University of Technology ; Ghotbi, Sirous (Supervisor) ; Pishvaie, Mahmoud Reza (Supervisor)
Abstract
Wellbore instability is one of the serious problems during drilling. This can cause delay in drilling, increasing drilling costs and in some cases well abandonment. The present project investigates the effects of non- isothermal drilling and the difference in salt concentration between formation fluid and drilling fluid on the stability of wellbores drilled in the saturated porous shale formations subjected to an arbitrary stress field. This project also focuses on the analysis of wellbore stability in shale formations in which the thermal diffusivity is higher than fluid invasion and the mechanism of heat transfer is dominated by conduction. The governing equations used in this dissertation...
Cataloging briefModeling of Wellbore Stability in Shales including Proelsatic, Chemical and Thermal Effects, M.Sc. Thesis Sharif University of Technology ; Ghotbi, Sirous (Supervisor) ; Pishvaie, Mahmoud Reza (Supervisor)
Abstract
Wellbore instability is one of the serious problems during drilling. This can cause delay in drilling, increasing drilling costs and in some cases well abandonment. The present project investigates the effects of non- isothermal drilling and the difference in salt concentration between formation fluid and drilling fluid on the stability of wellbores drilled in the saturated porous shale formations subjected to an arbitrary stress field. This project also focuses on the analysis of wellbore stability in shale formations in which the thermal diffusivity is higher than fluid invasion and the mechanism of heat transfer is dominated by conduction. The governing equations used in this dissertation...
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