Product Name: High-strength milling and finishing drill pipe

Product Model:

Place of Origin: Shanxi, China

Product Description

The High-Strength Milling and Fishing Drill Pipe is crucial for the successful implementation of milling and fishing operations, primarily used for retrieving tools of directional drilling rig . Compared to conventional drill pipes, this specialized drilling pipe not only features a large through-hole similar to casing but also boasts high overall strength with smooth inner and outer walls. The pin and box ends are friction welded to the drilling pipe body; both ends have a larger diameter than the middle section to enhance the strength of the threaded connections. The welding areas undergo machining to ensure a smooth transition between the finishing drill pipe joints and the body.

Product Features

1. The pin end, box end, and drill pipe body are joined by friction welding.

2. High tensile and torsional resistance: Tensile strength ≥ 1035 MPa, yield strength ≥ 965 MPa.

3. Excellent toughness: Fully meets the standards of grade 135 steel.

4. Internal and external flush design of the fishing drill pipe facilitates the implementation of milling and fishing techniques.

5. Corrosion resistance: Demonstrates strong anti-corrosion properties and adaptability to downhole environments, capable of operating in highly corrosive environments containing hydrogen sulfide acid.

Application Range

The High-Strength Milling and Fishing Drill Pipe is mainly used for dealing with stuck pipe incidents during measurement-while-drilling (MWD) oriented drilling in coal mines, as well as for retrieving downhole drilling tools for the directional drill rig.

Technical Specifications