Structure and working principle of rib drill pipe

Release time:

2022-02-17

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The structure of the 1. rib drill rod The rib drill rod is mainly composed of two parts: the rod body and the rib piece. On a core tube similar to an outer flat drill pipe, a high-hardness blade with a certain width (generally about 18mm) and a certain height (generally about 7mm) is helically welded, and processed to make its outer diameter consistent with that of the outer flat drill pipe, as shown in fig. 2. Fig. 2 main specifications of rib drill rod: φ 50-φ 63.5, φ 63.5-φ 73, φ 73-φ 89 cases: rib drill rod φ 73-φ 89 refers to the diameter of the drill rod body is φ 73mm, and the outer diameter of the rib piece (I .e. the outer diameter of the drill rod) is φ 89mm. 2. ribs

Structure of 1. rib drill pipe

The rib drill pipe is mainly composed of two parts: the rod body and the rib piece. On a core tube similar to an outer flat drill pipe, a high-hardness blade with a certain width (generally about 18mm) and a certain height (generally about 7mm) is helically welded, and processed to make its outer diameter consistent with that of the outer flat drill pipe, as shown in fig. 2. Fig. 2 Main Specifications of Rib Drill Pipe: Φ50-Φ63.5, Φ63.5-Φ73, Φ73-Φ89

For example, the rib drill pipe Φ73-Φ89 refers to the diameter of the drill pipe body is Φ73mm, and the outer diameter of the rib piece (I .e. the outer diameter of the drill pipe) is Φ89mm.

The working principle of 2. rib drill pipe

The outer diameter of the rib piece of the rib drill pipe is consistent with the outer flat drill pipe, which is consistent with the specifications of the drilling rig holder, and the rib piece has a certain width and strength, so the drilling rig holder can be used like the outer flat drill pipe to realize self-unloading and adapt to drilling in hard formations.

The rib piece of the rib drill rod is a spiral structure, which ensures that there is enough gap between the drill rod and the drilling hole, which is beneficial to form a circulation channel between the orifice and the bottom of the hole. During drilling, the flushing fluid or compressed air is delivered to the bottom of the hole through the central hole of the drill pipe body, and then the broken rock debris at the bottom of the hole is carried to the outside of the hole along the spiral groove between the hole wall and the outer surface of the drill pipe, which has the same slag discharge effect as the twist drill pipe and is suitable for drilling in softer formations.

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Key words:

Technology, drill pipe, rib, outer diameter, between, certain, 73, drilled hole, 89, width

What are the advantages of twist drill pipe-beneficial mining technology

Valentine's Day & Lantern Festival, Happy Tuan Tuan, Full of Love

What are the advantages of twist drill pipe-beneficial mining technology

Valentine's Day & Lantern Festival, Happy Tuan Tuan, Full of Love

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