Double-speed variable-torque drill bit for drilling deep well

A drill bit, quick-change technology, applied in drill bits, drilling equipment, earthwork drilling and other directions, can solve the problems of drill bit wear, uneconomical, high cost, and achieve the effect of improving crushing efficiency and good practical effect

Inactive Publication Date: 2016-08-03
柳超
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both of these have certain problems. For the former, the drill bit is more or less worn when drilling the softer rock layer. The cos

Method used

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  • Double-speed variable-torque drill bit for drilling deep well
  • Double-speed variable-torque drill bit for drilling deep well
  • Double-speed variable-torque drill bit for drilling deep well

Examples

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Example Embodiment

[0022] Such as figure 1 , 10 As shown, it includes a drill bit, a fixed rod sleeve, a first planetary support plate, a drill ring support, a drill ring side cutting head, a drill bit, a drill ring, a center drill disc, a hydraulic torque converter, a drill inner rod, Internal gear ring, planetary gear, planetary gear shaft, second planetary support plate, drill ring support bearing, such as image 3 As shown, the input end of the hydraulic torque converter is connected with the drill rod, and the output end of the hydraulic torque converter is connected with the inner rod of the drill bit. The upper side of the center drill disk is installed at one end of the inner rod of the drill bit, such as image 3 , 4 As shown, there are multiple drilling heads installed on the lower side of the center drill disk; Figure 7 As shown, the fixed rod sleeve is nested on the outside of the drill rod, the first planetary support plate is installed at the lower end of the fixed rod sleeve, and the...

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PUM

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Abstract

The invention belongs to the technical field of drilling bits, and particularly relates to a double-speed variable-torque drill bit for drilling a deep well. The double-speed variable-torque drill bit comprises a drill bit drill rod, a first planetary supporting plate, a drill collar support, drilling heads, a drill collar, a center drill disk, a hydraulic variable-torque device, an inner toothed ring, planetary gears, a second planetary supporting plate and drill collar supporting bearings, wherein the drill bit drill rod is connected with the center drill disk through the hydraulic variable-torque device; during a process that the drilling heads of the center drill disk are in collision with rocks, the hydraulic variable-torque device can adjust the torque and the speed of the center drill disk, so that the service life of the drill bit is prolonged, and the drilling efficiency is increased; in addition, the drilling heads of the drill collar are arranged at the outer side of the center drill disk, and the drill collar is meshed with the drill bit drill rod through the inner toothed ring on the drill collar support and the planetary gear on the first planetary supporting plate and rotates at a lower reverse speed relative to the speed of the drill bit drill rod, so that the inner layer and the outer layer of the drilling heads of the drill collar and the drilling heads of the center drill disk are combined through the design, the crushing efficiency of the rocks is increased through reverse tangential speeds between the drilling heads of the drill collar and the drilling heads of the center drill disk, and the practical effect is better.

Description

Technical field [0001] The invention belongs to the technical field of drilling bits, in particular to a double-speed variable-twist drilling bit for drilling deep wells. Background technique [0002] At present, most of the drill bits used for drilling are integrally cast or forged. For the drilling of rock formations with different hardness at different depths, or a single use of harder drill bits or real-time replacement of drill bits according to the drilled rock formations has achieved the purpose of drilling. Both of these have certain problems. For the former, the drill bit is more or less worn when drilling the softer rock layer. The cost is high, which is not cost-effective; for the latter, it is necessary to frequently replace the drill bit to increase the time cost. [0003] The present invention designs a double-speed variable-twist drill bit for drilling deep wells to solve the above problems. Contents of the invention [0004] In order to solve the above-me...

Claims

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Application Information

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IPC IPC(8): E21B10/00E21B10/43
CPCE21B10/00E21B10/43
Inventor 柳超
Owner 柳超
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