Casing is a large-diameter pipe crucial for stabilizing oil or natural gas well walls or boreholes. Inserted into the wellbore and fixed with cement, casing prevents the separation of the rock formation and the wellbore from collapsing, ensuring the circulation of drilling mud for efficient drilling and production.
Types of Casing Used in Oil Extraction
- Surface Oil Casing
Protects the well from contamination by shallow water and gas layers.
Supports wellhead equipment and maintains the weight of other casing layers.
- Technical Oil Casing
Separates pressure levels, ensuring proper drilling fluid flow and protecting the production casing.
Facilitates the installation of anti-burst devices, leak-proof devices, and tail pipes.
- Production Oil Casing
Transports oil and gas from reservoirs to the surface.
Protects drilling operations and assists in managing drilling mud layers.
Specifications
The outer diameter of oil casing typically ranges from 114.3 mm to 508 mm, tailored to meet the demands of various drilling conditions.
