4-1/2 inch
Indicates the outer diameter (OD) of the tubing, equivalent to 4.5 inches. This is a common medium-sized tubing used in production strings, designed to transport hydrocarbons (oil, gas, or fluids) from the reservoir to the surface. Its size makes it versatile for various well depths and production rates.
EUE
Stands for External Upset End, a type of threaded connection for tubing. In an EUE design, the ends of the tubing are "upset"—meaning the outer diameter at the threaded portion is thicker than the main body of the tubing. This upset strengthens the connection area, allowing it to withstand higher pressures and mechanical loads. EUE connections are standardized, featuring a tight, metal-to-metal seal (often with thread compounds for enhanced sealing) and are widely used in production tubing where reliable pressure containment is critical.
P110
Denotes the material grade of the tubing. P110 is a high-strength grade with a minimum yield strength of 110,000 psi (pounds per square inch). It is typically made from alloy steel and undergoes heat treatment (such as quenching and tempering) to achieve its high strength and toughness. P110 is suitable for harsh downhole conditions, including high-pressure reservoirs, deep wells, or environments with moderate corrosion, making it a preferred choice for demanding production scenarios.
