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Design of the full casing programin a deviated well

Aslanidis Panagiotis

Πλήρης Εγγραφή

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Περίληψη

Casing design constitutes of one of the major challenges in the oil industry. This isdue to the fact that casing has to protect the well from the formation environment, which is going through and also from the variation of different conditions that occur in the subsurface.To initiate the design procedure, the construction of the pore and fracture pressure profile is required based on which, the number of the casing strings will be selected.Subsequently, the outside diameters (OD) of each casing string must be defined, as wells as the equivalent mud density (EMD), which will be used in each section. In addition, survey of the well is needed in order to convert the true vertical depth (TVD) to measured depth (MD). Finally, the calculations of the major forces that act on the well (burst, collapse and tension) are required, so that the final casing thickness and grade can be selected.The objective of this project is to provide a casing design on deviated, deep well (type slanted at target depth of 13000 ft) by taking into account the worst case scenario of all the above forces.

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