Casing design considerations

Casing design considerations

The objective of the casing design is to define a set of casing strings (casing scheme), capable of withstanding a variety of external and internal pressures, thermal loads and loads related to the self-weight of the casing. These casing strings are subjected to time-dependent corrosion, wear and possibly fatigue, which downrate their resistance to these loads during their service life.

Objectives of casing design

- protect from sloughing shales or moving salt formations; - isolate the reservoirsfrom unwanted fluids - protect fresh-water horizons; - provide a means to handle kicks; - conduit for produced fluid; - conduit . . .

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