Drill pipe is a hollow, thick walled pipe used for carrying out horizontal drilling to facilitate the drilling process on a wellbore. A single length drill pipe comprises a hollow tube typically long in height with considerable wall thickness and a tool joint connection at both ends. Since drill pipe is subjected to torsional stresses and fatigue at the time of drilling operations it is seamless in nature and is heat-treated to meet API specifications.
The manufacturing process of the drill pipe consists of two stages. The first stage is called as forming and is performed by pipe mills whereas the second phase finishing is typically performed by processors. In forming process starting raw material utilized is a solid steel billet. Green tube used is typically manufactured by high temperature processes to form a central cavity in the billet. In the rotary process, a heated billet is grouped by angled rolls that cause the billet to revolve over the piercer point forming a hole through the billet’s length. In the extrusion phase, the billet is hot punch pierced and is then extruded axially with the help of a die and a mandrel, forming a hollow shell. In the process a hollow shell is produced and is then rolled with the help of a fixed plug inside the shell to decrease the wall thickness and extends the length. The shell is then rolled again in a sizing mill where it is formed into a round shape and is sized to the specified diameter.
Subsequently to the forming phase, the green tube is transferred to a processor where it undergoes for finishing phase in which the pipe is heated, inspected and is straightened. All drill pipes are heat treated by its full length after upsetting. Typically, the nature of the heat treatment is dependent on the grade of the pipe and involves a combination of tempering, quenching and normalizing. Heat treatments for drill pipe are carried out by the specified standards of API.
The drill pipe tube manufacturing process is completed with the help of a welding through a tool joint attached to the each end of the drill pipe tube using rotational friction. The pin is then attached to one end of the drill pipe tube and at the other end a box is attached. In friction welding, the heat for welding is generated by pressuring a piece of metal against another piece, which is then rotated at high speed.
The drill pipe with tool joint undergoes an additional heat treatment using a polymer rather than water as quenching agent provides a gradual cooling process. Drill pipe is machined smooth and is inspected using a range of tests that vary according to the specification and needs. Developing economies and increasing investments are some of the key drivers of the drill pipe market. However, the high operational cost to carry out the drilling procedure can hamper the growth of the market. Ample opportunities are there for drill pipe market as demand for energy is increasing at a healthy rate in the Asia Pacific countries especially India and China.
Some of the key players in the business of drill pipe market include Superior Drillpipe Manufacturing Inc., Shanghai Hilong Drill Pipe Co. Ltd., Tenaris Company, RK Pipe LLC, Drill Pipe International LLC, TPS TECHNITUBE RÖHRENWERKE GmbH, DP Master Manufacturing Pte Ltd and Interdril Asia Ltd among others.
This research report analyzes this market on the basis of its market segments, major geographies, and current market trends. Geographies analyzed under this research report include
- North America
- Asia Pacific
- Rest of the World
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- Market structure
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