Pulsed jet rock debris washing tool

A technology of pulse jet and cleaning tools, which is applied in the direction of flushing boreholes, boreholes/well components, earthwork drilling and mining, etc. It can solve the problems of stuck drill cleaning efficiency, easy deposition of cuttings, and unsatisfactory cleaning effect of cuttings.

Pending Publication Date: 2020-02-04
YANGTZE UNIVERSITY
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a reasonable structure and easy to use to solve the problem of unsatisfactory cleaning effect of the existing cuttings bed cleaning tool

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
  • Pulsed jet rock debris washing tool
  • Pulsed jet rock debris washing tool
  • Pulsed jet rock debris washing tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The pulse jet cuttings cleaning tool is composed of an upper joint 1, a housing 2, a central pipe 3 and a lower joint 4. The housing 2, the upper joint 1 and the lower joint 4 are respectively cylindrical, and the inner hole of the upper joint is in the shape of a variable diameter. One end of the shell 2 is threaded with an upper joint 1, and the other end of the shell 2 is threaded with a lower joint 4. After the shell 2 is threaded with the upper joint 1 and the lower joint 4, it is in a straight cylindrical shape. During work, the upper joint 1 and the lower joint 4 are used to connect the drill pipe, and the lower joint 4 is used to install the drilling tool; when the drilling fluid flows from the large-diameter end of the inner hole of the upper joint 1 to the narrow The top joint 1 will suppress the pressure of the drilling fluid, so that the liquid flow rate of the drilling fluid in the top joint 1 will be accelerated, thereby acting on the drilling tool.

[002...

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 pulsed jet rock debris washing tool and belongs to the technical field of auxiliary equipment for drilling. The pulsed jet rock debris washing tool is composed of an upper joint, a housing, a central pipe and a lower joint; the upper joint is installed at one end of the housing by screw threads; the lower joint is installed at the other end of the housing by screw threads; the central pipe is movably installed inside the housing by virtue of a left bearing and a right bearing; the head of one end of the central pipe is in leaning connection with the upper joint and correspondingly communicates with the upper joint; the head of the other end of the central pipe is in leaning connection with the lower joint and correspondingly communicates with the lower joint; thepart, between the left bearing and the right bearing, of the central pipe is provided with at least two flow guide holes; the flow guide holes communicate with a central hole of the central pipe; thecircumference of the housing is provided with a plurality of jet flow holes corresponding to the flow guide holes; and the flow guide holes intermittently communicate with the jet flow holes. The washing tool can be used for cleaning a rock debris bed so as to prevent deposition of rock debris, and also enhances the turbulence degree of drilling fluid around the washing tool so that the fluid generates a better rock taking effect, thereby preventing the risk of blocking of a drilling bit due to deposition of too much rock debris.

Description

technical field [0001] The invention relates to a pulse jet cuttings cleaning tool, which belongs to the technical field of drilling auxiliary equipment. Background technique [0002] In the oil drilling process of complex structure wells such as extended-reach horizontal wells and multi-branch wells, rocks are drilled by the drill bit to form cuttings that accumulate in the wellbore annulus and are continuously carried to the surface by circulating drilling fluid. However, due to the influence of gravity, viscous resistance, impact force and other forces, it is very easy to generate cuttings beds. If the thickness of the sedimentary cuttings bed in the well is too high, it will cause a series of serious downhole problems, such as the inability to effectively transmit the drilling weight and the downhole Increased frictional resistance and torque of the drill tool assembly, slow ROP, and serious obstructions during tripping and tripping will cause problems such as drill stic...

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): E21B21/00
CPCE21B21/00E21B41/0078
Inventor 夏成宇陈锟王旭东李郑涛王颂夏黄琦夏宏伟
Owner YANGTZE UNIVERSITY
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