PDC drill bit of rotary drilling rig

A technology for rotary drilling rigs and drill bits, which is applied to drill bits, drilling equipment, earthwork drilling, etc., can solve problems such as construction damage, and achieve the effects of small vibration, improved drilling efficiency, and good wear resistance.

Inactive Publication Date: 2016-06-15
丁栋
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a PDC drill bit for a rotary drilling rig to solve the problem of severe damage in construction of the rotary drilling rig in medium-hard rock formations in the prior art

Method used

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  • PDC drill bit of rotary drilling rig
  • PDC drill bit of rotary drilling rig
  • PDC drill bit of rotary drilling rig

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Embodiment Construction

[0018] Such as figure 1 , figure 2 , image 3 and Figure 4 As shown, a PDC drill bit for a rotary drilling rig includes a barrel drill bit 1, a number of PDC rib teeth 2 and a number of PDC plate teeth 3 are evenly welded on the barrel drill bit 1, and the number of PDC rib teeth 2 and PDC plate teeth 3 is determined according to Proportional setting, the rib tooth body 21 of PDC tooth 2 is inlaid with several composite sheets 22, and the plate tooth body 31 of PDC tooth 3 is inlaid with several composite sheets 32, the ratio of the number of PDC rib teeth and PDC plate teeth on the barrel drill bit is 1:6, PDC rib-tooth composite sheet and PDC plate-tooth composite sheet are both made of artificial diamond sheet in the front and hard alloy sheet in the back.

[0019] The working principle of the present invention: the function of the PDC rib teeth is to drill into the protection cylinder to export the drilling slag and ream the hole; On the barrel drill bit, the speed c...

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Abstract

The PDC bit of the rotary drilling rig, including the barrel drill bit, evenly welds several PDC rib teeth and several PDC plate teeth on the barrel drill bit. The number of PDC rib teeth and PDC plate teeth is set according to a certain ratio. A plurality of composite sheets are inlaid, and a plurality of composite sheets are inlaid on the plate tooth body of the PDC plate tooth. The drill bit of the rotary drilling rig of the present invention uses PDC rib teeth and PDC plate teeth to replace the existing picks, uses a composite sheet to strengthen the hardness of the drill teeth, and can realize drilling into rock formations without a large torque drill, improving the Drilling efficiency, with the advantages of good wear resistance, high hardness, low operating cost and low vibration.

Description

technical field [0001] The invention relates to the technical field of construction machinery equipment, in particular to a PDC drill bit of a rotary drilling rig. Background technique [0002] With the rapid development of China's economy, China's construction market is extremely hot. Its scale is so large and so fast that all the world's powerful countries can only look at it. Pile foundation is the foundation of large buildings, and the construction technology has also made great progress and development. Rotary drilling rigs are widely used in industrial and civil buildings due to their high efficiency, environmental protection, and low consumption. On some high-speed rail, high-speed, and light rail bored pile construction sites, there are regulations that only allow rotary drilling rigs to enter the site for construction. According to incomplete statistics, the number of rotary drilling rigs in the country is more than 10,000. The principle of rotary drilling rig is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/54
CPCE21B10/54
Inventor 丁栋
Owner 丁栋
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