Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Underground while-drilling bidirectional eccentric nipple reaming drilling tool

A drilling tool and eccentric technology, which are applied in drilling equipment, drilling equipment and methods, and earthwork drilling, etc., can solve problems such as difficulty in running casing in soft formations, cuttings bed sticking, borehole necking and stuck drilling, etc. Achieve the effect of strong integrity, eliminating damage and increasing contact area

Inactive Publication Date: 2019-04-26
天津北地天祥贸易有限公司
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of the prior art, the present invention provides a downhole drilling tool with two-way eccentric sub-joint reaming to solve the problem of cuttings bed sticking, wellbore necking and sticking, and soft formation or easy-to-collapse formation. Casing difficulties and other issues

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
  • Underground while-drilling bidirectional eccentric nipple reaming drilling tool
  • Underground while-drilling bidirectional eccentric nipple reaming drilling tool
  • Underground while-drilling bidirectional eccentric nipple reaming drilling tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] as attached Figure 1-3 As shown, a downhole drilling tool for bidirectional eccentric sub-joint reaming while drilling includes a body 1, a water hole 2 is arranged in the center of the body 1, and a box 3 connected to the upper drill string is arranged at one end of the body 1. The other end of the body 1 is provided with a male buckle 4 connected to the lower drill string, and two groups of eccentric reamers are provided outside the body 1, and each group of reamers includes four blades 5, each of which is PDC cutting teeth 6 are brazed on the blade 5 described above.

[0027] The blade 5 is also brazed with a wear-resistant protective column 7 .

[0028] The wear-resistant protection column 7 is 0.5-1mm higher than the PDC cutter 6 .

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 the technical field of petroleum natural gas drilling tools, in particular to an underground while-drilling bidirectional eccentric nipple reaming drilling tool. The underground while-drilling bidirectional eccentric nipple reaming drilling tool structurally comprises a body, wherein a water hole is arranged in the center of the body; one end of the body is provided with afemale buckle connected with an upper drill string, and the other end of the body is provided with a male buckle connected with a lower drill string; two groups of eccentric reamers are arranged outside the body; each group of reamers comprises four blades; and PDC cutting teeth are arranged on each blade in a brazing manner. By adopting the underground while-drilling bidirectional eccentric nipple reaming drilling tool, the problems of drill pipe sticking by cuttings bed, drill pipe sticking by borehole necking as well as difficulty in loading a casing pipe at soft formations or easy-to-collapse formations and the like can be solved.

Description

technical field [0001] The invention relates to the technical field of oil and gas drilling tools, in particular to an downhole bidirectional eccentric sub-joint reaming drilling tool while drilling. Background technique [0002] The hole reaming technology in the oil and gas drilling industry began in the early 20th century. The basic intention of applying this technology is to solve drilling problems such as borehole necking and well wall collapse. Practice has shown that the hole reaming technology is an effective method. Nearly 20- Over the past 30 years, with the transfer of oil and gas drilling to deep wells, ultra-deep wells, high-pressure oil and gas wells, horizontal wells, extended-reach wells and marine deep-water drilling, drilling engineering has to face more and more complicated situations. The important means of drilling abnormal conditions continue to develop, and gradually become an advanced technology that can deal with plastic formations, optimize casing p...

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): E21B7/28
CPCE21B7/28
Inventor 朱羽
Owner 天津北地天祥贸易有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com