2 3 8'' Drill Pipe

What is 2 3/8'' drill pipe?

Drill pipe is a piece of equipment used for oil or geological drilling, widely used in OCTG pipe systems, and its specifications and models vary according to specific applications and needs. 2 3/8'' drill pipe refers to the diameter determined by the drilling wellbore diameter and drill bit size. 2 3/8" drill pipe has demonstrated reliable adaptability in various working conditions with its small diameter and excellent performance.

Specifications

This specification is usually made of seamless steel pipe as raw material and is made after heat treatment. It is also suitable for environments where it needs to be matched with downhole tools such as casing pipe and pup joints. In different projects, the reasonable matching of drill bits and drill pipe grades can significantly improve the drilling speed and coring quality.

Material and process

The strength of 2 3/8’’ drill pipe is based on materials and heat treatment process. API 5DP grades commonly used in the industry, such as E75, X95, and G10, achieve high tensile strength and corrosion resistance by controlling the carbon content (0.25–0.35%), manganese (1.0–1.8%), and the proportion of elements such as Cr and Mo. With normalizing or normalizing + tempering heat treatment, the microstructure is uniform and the toughness is greatly improved.

The finished product production process includes:

Careful preparation of seamless hot-rolled tube billets to eliminate internal defects;

Controlled rolling and controlled cooling to ensure the accuracy of outer diameter and wall thickness;

Quenching and tempering heat treatment to balance strength and plasticity;

The threaded ends are processed and heat treated in multiple passes to extend the fatigue life;

Finally, non-destructive testing such as ultrasonic and magnetic powder is used to ensure the reliable quality of each pipe.

Main features

1. High tensile strength

Meets the strict requirements of tension for deep wells, horizontal wells, and large-diameter wellbore drilling.

2. Good fatigue resistance

The threaded end design and heat treatment work together to delay crack propagation and are suitable for long-cycle operations.

3. Corrosion resistance

Alloy element protection plus surface coating, combined with appropriate chemical treatment in CO₂ and H₂S environments can extend service life.

Application scenarios

Although 2 3/8" drill pipe is most commonly used in oil and gas well drilling, its application is not limited to this, and it has become an important hub for connecting pup joints, casing pipe and pumping systems:

Geological exploration and core sampling: fine sampling needs call for small diameters and high precision;

Geothermal energy development: stability under high temperature and high pressure environments;

Mining engineering and water well drilling: flexible interface, suitable for various drilling rigs and well types.

Read more: Size of Drill Pipe