Thrust bearing pack for automatically regulating axial load of turbodrill

An axial load, turbo drilling tool technology, applied in the direction of rotating bearings, shafts and bearings, sliding contact bearings, etc., can solve the problems of short life, short life and increased cost of thrust bearing sets, and achieve convenient maintenance and installation. , the effect of improving life expectancy

Inactive Publication Date: 2014-05-28
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology

With the development of drilling technology, the demand for turbodrilling tools is increasing, but the service life of turbodrilling tools is unstable, which limits the application and promotion of turbodrilling tools
The service life of the turbodrill depends on the life of the thrust bearing group. The thrust bearing group works under high temperature, high speed and heavy load conditions. The thrust bearing group has a short life and is

Method used

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  • Thrust bearing pack for automatically regulating axial load of turbodrill
  • Thrust bearing pack for automatically regulating axial load of turbodrill
  • Thrust bearing pack for automatically regulating axial load of turbodrill

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0024] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 As shown, the present invention is a thrust bearing group that automatically adjusts the axial load of a turbodrilling tool. It is composed of an upper bearing group 1 and a lower bearing group 2. at the bottom of the turbine shaft 3. The upper bearing group 1 is composed of 3 to 5 pairs of upper bearings 4, and the upper bearing 4 is composed of an upper bearing moving ring 6 and an upper bearing static ring 7; the lower bearing group 2 is composed of 3 to 5 pairs of lower bearings 5, and the lower The bearing 5 is composed of the lower bearing moving ring 8 and the lower bearing static ring 9; the shaft head lock nut 10, the output joint 11 and the turbine shaft 3 are threadedly connected, and the upper bearing moving ring 6 and the lower bearing moving ring 8 are press...

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Abstract

The invention relates to a thrust bearing pack for automatically regulating the axial load of a turbodrill. The thrust bearing pack is composed of an upper bearing pack and a lower bearing pack, wherein the upper bearing pack is mounted at the top end of a turboshaft; the lower bearing pack is mounted at the bottom end of the turboshaft. The upper bearing pack is composed of 3-5 pairs of upper bearings, and the upper bearings are composed of upper bearing movable rings and upper bearing static rings; the lower bearings are composed of 3-5 pairs of lower bearings, and the lower bearings are composed of lower bearing movable rings and lower bearing static rings; a bearing head fastening nut and an output connector are in threaded connection with the turboshaft, and the upper bearing movable rings and the lower bearing static rings are tightly pressed on the turboshaft; the upper bearing movable rings and the lower bearing movable rings synchronously rotate along with the turboshaft. According to the thrust bearing pack, the opening degree of a flow guide hole is automatically regulated according to the size and the direction of the axial load of the turboshaft, a hydraulic load generated by a turbine section is in dynamic balance, the bearings no longer bear an impact load, and the service life of the turbodrill is prolonged.

Description

technical field [0001] The invention relates to a thrust bearing group for automatically adjusting the axial load of a turbine drilling tool, which belongs to the field of downhole power drilling tools for oil and gas. Background technique [0002] Turbodrilling tools have good development potential in ultra-deep well drilling and anti-deviation drilling, which can significantly increase the mechanical penetration rate and reduce drilling costs. With the development of drilling technology, the demand for turbodrills is increasing, but the service life of turbodrills is unstable, which limits the application and promotion of turbodrills. The service life of the turbodrill depends on the life of the thrust bearing group. The thrust bearing group works under high temperature, high speed and heavy load conditions. The thrust bearing group has a short life and is prone to failure. After the thrust bearing group fails, it is necessary to trip out the drill to replace the bearing,...

Claims

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Application Information

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IPC IPC(8): F16C17/08F16C33/04E21B4/02
Inventor 张晓东苟如意汪凯杨文武张轶茗
Owner SOUTHWEST PETROLEUM UNIV
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