Turbine drilling tool bearing block having permanent magnet bearing

A technology of permanent magnetic bearings and turbodrilling tools, which is applied to drill pipes, drill pipes, earthwork drilling, etc., can solve problems such as overheating and wear, rolling elements prone to pitting and crushing, and bearing clearance cannot be guaranteed, etc., to achieve Low energy consumption, reduced number of trips and improved life

Inactive Publication Date: 2011-06-22
SOUTHWEST PETROLEUM UNIV
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Multi-stage metal ball bearings are prone to pitting and crushing due to bearing clearance cannot be gu

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Turbine drilling tool bearing block having permanent magnet bearing
  • Turbine drilling tool bearing block having permanent magnet bearing
  • Turbine drilling tool bearing block having permanent magnet bearing

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0015] Embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0016] like figure 1 , figure 2 , image 3 As shown, a support section of a turbodrilling tool with a permanent magnetic bearing in the present invention is mainly composed of an upper joint 2, a connecting shaft 3, radial bearings (7, 19), a permanent magnetic bearing group 10, a lower short section 20, and a support section Shaft 21 and housing 4 constitute. The permanent magnetic bearing group 10 includes 15 to 25 pairs of permanent magnetic bearings, and the permanent magnetic bearing is composed of a fixed magnetic ring 11 , a moving magnetic ring 12 , an outer jacket 13 and a shaft sleeve 14 . The fixed magnetic ring 11 and the overcoat 13 are installed on the inner wall of the housing 4, the moving magnetic ring 12 and the shaft sleeve 14 are installed on the supporting joint shaft 21, and the moving magnetic ring 12, the fixed magnetic ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a turbine drilling tool bearing block having a permanent magnet bearing, which mainly consists of an upper joint, a connecting shaft, a radial bearing, a permanent magnet bearing group, a lower short block, a bearing block shaft and an outer housing. The permanent magnet bearing group comprises 15 to 25 pairs of permanent magnet bearings; and the permanent magnet bearing consists of a fixed magnetic ring, a movable magnetic ring, a shaft sleeve and an outer housing. The fixed magnetic ring and the outer housing are arranged on the inner wall of the outer housing; the movable magnetic ring and the shaft sleeve are arranged on the bearing block shaft; a structure of the movable magnetic ring, the fixed magnetic ring, the movable magnetic ring and the fixed magnetic ring in a staggered manner is formed is formed on the bearing block in the axial direction; and an axial gap exists between the adjacent planes of the fixed magnetic ring and the movable magnetic ring. The fixed magnetic ring and the movable magnetic ring are made of permanent magnet materials; the fixed magnetic ring and the fixed magnetic ring are magnetized in the axial direction and have opposite magnetizing directions; and the adjacent planes of the fixed magnetic ring and the movable magnetic ring are identical in magnetic pole. The permanent magnet bearing has the characteristics of no friction and no wear, and is simple in structure, convenient to manufacture and install, and long in service life.

Description

technical field [0001] The invention relates to a support joint of a turbo drilling tool with a permanent magnetic bearing, belonging to the technical field of downhole equipment for oil drilling. Background technique [0002] The geological conditions of modern drilling engineering are harsh and the well structure is complex, which puts forward higher requirements for drilling equipment. The application of turbodrilling tools in deep wells and ultra-deep wells can significantly increase the rate of penetration, improve the quality of the wellbore, accurately track the wellbore, and have better economy, safety and reliability. [0003] At present, turbodrilling tools use open support joints lubricated by drilling fluid, and the support joints often use multi-stage metal ball bearings or diamond thrust bearings. Multi-stage metal ball bearings are prone to pitting and crushing due to the lack of bearing clearance, while diamond thrust bearings are prone to overheating and we...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E21B4/00E21B3/00E21B17/02
Inventor 张晓东苟如意龚彦
Owner SOUTHWEST PETROLEUM UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap