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High-toughness non-excavated oriented drill rod

A non-excavation, directional drilling technology, applied in the direction of drill pipes, drill pipes, drilling equipment, etc., can solve the problems of low weld seam area standards of welded joints, hidden dangers of directional engineering engineering, and the inability of drill pipes to rebound, etc., to avoid The risk of the weak area of ​​the welding area, good reusability, and the effect of improving flexibility

Inactive Publication Date: 2017-02-22
WUXI DOUBLE HORSE DRILLING TOOLS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, steel grade S135 is commonly used for drill pipes for directional crossing, and its strength and toughness can generally meet the requirements of crossing projects. The rod breaks or the drill rod does not spring back after use
[0003] Although according to the V150 steel grade mentioned in the standard SY / T 6896.2--2013, its manufacturing form is friction welding drill pipe, and its drill pipe body has reached the V150 standard, but the standard of welded joints and weld areas is relatively low, and the welding There is a high probability of welding defects in the seam itself, which poses engineering safety hazards to directional engineering

Method used

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Embodiment Construction

[0019] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0020] see Figure 1 to Figure 3 As shown, in this embodiment, a high-toughness non-excavation directional drill pipe includes a drill pipe body 1, and the drill pipe body 1 is formed by integral upsetting without a weld zone. The drill pipe body 1 includes a pipe body 10, the two ends of the pipe body 10 are respectively provided with a male buckle 11 and a female buckle 12, the male buckle 11 is provided with a thickened section 13, and the thickened section 13 is A groove 14 is provided, the groove width of the groove 14 is L2, and the length of the thickening section 13 is L1, then L2 / L1=1 / 3. Moreover, the groove shape of the groove 14 adopts an isosceles trapezoidal structure with a large opening and a small bottom, and the bottom corner of the groove 14 adopts a circular arc angle transition....

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Abstract

The invention discloses a high-toughness non-excavated oriented drill rod which comprises a drill rod body. The drill rod body comprises a tube body, wherein a male fastener and a female fastener are arranged at two ends of the tube body respectively. The high-toughness non-excavated oriented drill rod is characterized in that a thickened section is arranged on the male fastener, a groove is formed in the thickened section, and the width of the groove is 1 / 3 of the length of the thickened section. The thickened section of the high-toughness non-excavated oriented drill rod adopts a groove design, the bending radius of the drill rod under large curvature is increased, meanwhile the effective area of a cross section is ensured, the total strength is far greater than that of a non-thickened zone, the overall performance in use is ensured, the guiding flexibility of the drill rod is improved, the construction cost can be reduced, and the construction benefits are improved.

Description

technical field [0001] The invention relates to a drill rod, in particular to a high-toughness non-excavation directional drill rod. Background technique [0002] In the directional traversing project, in order to overcome the large load of the drilling tool in the traversing project and the efficiency of the traversing project, the non-excavation drilling rig adopts the increased engine power, so that the directional traversing drilling tool, especially the strength of the drill pipe The requirements are higher; at the same time, in order to improve the efficiency of engineering operations, construction personnel often use a larger steering angle in the process of directional traversing, which requires better toughness for directional traversing drilling tools, especially drill pipes. At present, steel grade S135 is commonly used for drill pipes for directional crossing, and its strength and toughness can generally meet the requirements of crossing projects. The drill rod ...

Claims

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Application Information

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IPC IPC(8): E21B17/00C22C38/02C22C38/04C22C38/22C22C38/24
CPCE21B17/00C22C38/02C22C38/04C22C38/22C22C38/24
Inventor 刘道喜周洪羊
Owner WUXI DOUBLE HORSE DRILLING TOOLS
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