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Steel Solutions in Borehole Drilling

A drill casing, also known as a setting pipe, is a large diameter steel pipe that is assembled and inserted into a recently drilled section of a borehole to protect and support the well stream.

 

It is similar to the bones of a spine protecting the spinal cord, casing is set inside the drilled borehole to protect and support the well stream.

The purpose of the Mild Steel Casing in borehole drilling is to:

✔ Prevent Buckling of casing in deeper boreholes

✔ Prevent contamination of fresh water well zones.

✔ Prevent unstable upper formations from caving-in and sticking the drill string or forming large caverns.

✔ Provide a strong upper foundation to use high-density drilling fluid to continue drilling deeper.

✔ Isolate different zones (that may have different pressures or fluids known as zonal isolation) in the drilled formations from one another.

✔ Seal off high pressure zones from surface, avoiding potential for a blowout.

✔ Prevent fluid loss into or contamination of production zones.

✔ Provides a smooth internal bore for installing production equipment.

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