Superdeep well great displacement high performance boring tool protector for well

An extended-reach well, high-performance technology, applied in drill pipe, drill pipe, drilling equipment, etc., can solve problems such as failure to successfully complete the well, inability to run the casing string, large friction torque of the pipe string, etc. Safety and drilling capacity, enhanced lubrication, prevention of casing eccentric wear

Active Publication Date: 2008-09-10
SOUTHWEST PETROLEUM UNIV
View PDF0 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In field practice, due to the excessive friction torque of the pipe string, the following situa...

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
  • Superdeep well great displacement high performance boring tool protector for well
  • Superdeep well great displacement high performance boring tool protector for well
  • Superdeep well great displacement high performance boring tool protector for well

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] according to figure 1 , image 3 As shown, the coupling casing 6 is installed at the joints 1 and 7 of the centralizer body, and a pair of rolling bearings 5 ​​are installed inside the coupling casing 6. The outer surface of the coupling casing 6 is provided with a medium flow channel 11 and a wedge-shaped pressure groove 10, and its inner surface Blow mold or assemble a layer of vibration-damping rubber sleeve 4 on the installation part of rolling bearing 5. The vibration-damping rubber sleeve has the function of damping and absorbing vibration, which can reduce the collision strength between the drilling tool and the well wall, and improve the structural safety and drilling capacity of the lower drilling tool ;The self-lubricating sealing ring group 2 is placed at the joint and the coupling shell, and each group is composed of 2~3 pairs of self-lubricating sealing graphite rings. The self-lubricating sealing ring group not only plays the role of lubrication and sealin...

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

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to a high performance driller protector which is used for a mud medium ultra deep well and an ultra deep well extended reach well with strong vibration, high friction and high possibility of failure. The driller protector has the functions of lubricating strongly, centralizing, reducing friction and resistance, releasing the bushing camber wear, preventing a key slot from clamping and the driller and protecting a connector. The technical proposal is as follows: a coupling housing is arranged at a centralizer connector body, the outside surface is provided with a medium flow passage and a tapered pressure groove which are uniformly distributed on the coupling housing in a spaced way; the inner part is provided with a pair of rolling bearings directly interference arranged on the connector body; the rolling bearings and the sleeve as well as the self-lubricating obturating ring set are respectively arranged on the inner surface of the two ends of the coupling housing symmetrically; and a middle filling cavity of the two rolling bearings and a top filling cavity between the bearings and the connector body are filled with graphite. The driller protector has strong ability to decrease vibration and to release the abrasion of the drill pipe and the bushing, reduces the torque, increases the drilling ability, has a simple structure and low cost, and is used for drilling in an oil-gas field.

Description

technical field [0001] The invention relates to an ultra-deep extended-reach well for deep and ultra-deep wells with mud medium, drill collars and lower drill pipes that are prone to drill tool failure due to severe vibration and high friction, and inclined well sections and horizontal sections of extended-reach wells Use high-performance drill tool protectors. Background technique [0002] The development of deep well and ultra-deep well drilling technology is based on modern drilling technology. The main technical difficulties are: high temperature and high pressure, multi-pressure system, piedmont structure, and difficult-to-drill formations. my country's deep and ultra-deep wells started late, but have developed rapidly in recent years, and have formed a road that combines independent research and development with selective absorption of foreign advanced technology. After years of hard work, the international market competitiveness has been gradually improved. However, ...

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): E21B17/10
Inventor 祝效华贾彦杰童华
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