Abstract: In down-hole interventions, the thin elastic coiled tubing (CT) extended for thousands of meters underground would typically undergo helical buckling as a result of axial compressive force. This paper builds an analytical ...

Abstract: Frequent occurrences of wellhead sinking highlight the inadequacy of cement's supporting force for the casing, which results in the debonding of the casing–cement interface. The interface debonding leads to the failure of ...