Browsing NTNU Open by Author "Islam, Md. Aminul"

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Modeling and Prediction of Borehole Collapse Pressure during Underbalanced Drilling in Shale

Islam, Md. Aminul (Doktoravhandlinger ved NTNU, 1503-8181; 2011:39, Doctoral thesis, 2011)

Drilling with a bottomhole pressure less than the formation pore pressure (underbalanced) will usually increase the risk of borehole collapse due to yielding or failure of the rock adjacent to the borehole. Understanding ...