Casing and Tubing are important components in the main part of oil well construction. All well drilled for the use in oil and gas production must be cased with materials with sufficient strength and functionality.
Casing is the major structural component of a well. Casing pipe lines the borehole. It is subject to axial tension by its dead weigh, internal pressure by fluid purging, and external pressure by surrounding rock formations. Casing is particularly exposed to axial tension and internal pressure by the pumped oil or gas emulsion. Casing is needed to: Maintain borehole stability
- Prevent contamination of water sands
-Isolate water from production formations
-Control well pressure during drilling,production, and workover operation
-Casing provides locations for the installation
-Blowout preventers
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Cynthia
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