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

A hydraulically driven horizontal directional drilling engineering geological survey pressurized water test device

A technology of horizontal orientation and engineering geology, applied in earthwork drilling, wellbore/well components, measurement, etc., can solve the problems of uneven driving force variation, test failure, easy entanglement, etc., and achieve the effect of meeting the requirements of engineering survey

Active Publication Date: 2022-06-24
CHINA UNIV OF GEOSCIENCES (WUHAN)
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water injection pipe is arranged outside the drill pipe, which is easy to be entangled and then broken, and the rough hole wall may also cause damage to the water injection pipe
The length of horizontal directional drilling can reach several kilometers. At this time, the drill pipe is flexible, the friction force with the hole wall is large, and the elastic deformation is also large. It is very likely that the drill pipe in the device cannot move forward and backward accurately, and the nozzle switch cannot be successfully controlled. , or the driving force varies unevenly, causing the plug to move, causing the test to fail

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
  • A hydraulically driven horizontal directional drilling engineering geological survey pressurized water test device
  • A hydraulically driven horizontal directional drilling engineering geological survey pressurized water test device
  • A hydraulically driven horizontal directional drilling engineering geological survey pressurized water test device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Please refer to figure 1 , 2 , 3 and 4, the embodiments of the present invention provide a hydraulically driven horizontal directional drilling engineering geological survey pressurized water test device suitable for a single plug state, including an inner pipe 1 , an outer pipe 2 and a plug 3 .

[0029] Specifically, the inner pipe 1 is a hollow pipe body structure with a closed front end. Here, the front end of the inner pipe 1 is provided with a pressure relief valve 17 , and the front end of the inner pipe 1 is sealed by the pressure relief valve 17 . The function of the pressure valve 17 is to prevent the water pressure in the drill pipe and the inner pipe from being too large, which will cause damage to the device. The rear end of the inner pipe 1 is provided with an inner pipe water port 7 , and the inner pipe water port 7 penetrates the outer wall of the inner pipe 1 . The outer wall of the front end of the inner pipe 1 is provided with a high pressure closing...

Embodiment 2

[0056] Also, please refer to Figure 5 , the embodiment of the present invention provides a hydraulically driven horizontal directional drilling engineering geological survey pressurized water test device suitable for the double-plug state. On the basis of the device, the drill pipe 4 and the outer pipe 2 are also connected in series with a continuation outer pipe 22 with the same structure as the outer pipe 2 and a continuation inner pipe 21 with the same structure as the inner pipe 1 . , the surface of the continuous outer tube 22 is provided with a plug 3, and the connection between the front end of the continuous outer tube 22 and the rear end of the continuous inner tube 21 is the same as the connection between the front end of the outer tube 2 and the rear end of the inner tube 1 The connection method is the same;

[0057] The cone 19 includes an inner cone 24 and an outer cone 23 , the rope 20 is connected to the inner cone 24 , and the inner cone 24 is arranged inside...

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 provides a hydraulic-driven horizontal directional drilling engineering geological survey pressurized water test device, comprising: a hollow inner tube, the rear end of which is provided with an inner tube nozzle; a hollow outer tube, the rear end of the inner tube is plugged into the front end of the outer tube, The outer tube is provided with a nozzle of the outer tube at the front end, and the nozzle of the outer tube is aligned with the nozzle of the inner tube in the radial direction. There is an annular buffer cavity between the inner tube and the outer tube. There is a slider that can slide in the axial direction, and the slider is connected with the pressure test spring. There is a nozzle on the slider, and the slider slides under the action of water pressure to connect the nozzle of the slider or block the nozzle of the inner pipe and the nozzle of the outer pipe. ; and a plug disposed around the outer tube. Beneficial effects of the present invention: use the drilling fluid hydraulic pressure to push the cone block from the inside of the drill pipe and then open the embolism pressure relief nozzle to realize embolism unsealing. It is suitable for the pressurized water test device in the ultra-long horizontal directional drilling environment and solves the problem of the existing pressurized water test. The problem that the equipment cannot perform embolism expansion and pressure relief in the ultra-long horizontal directional drilling.

Description

technical field [0001] The invention relates to the technical field of engineering survey equipment, in particular to a hydraulically driven horizontal directional drilling engineering geological survey pressurized water test device. Background technique [0002] At present, with the increase of long-distance and deep-buried tunnel projects, the traditional vertical drilling method has encountered great challenges. If the traditional vertical drilling method is still used, there will be many problems, such as the obtained stratigraphic information cannot meet the needs of engineering design, the effective drilling length is too low, the drilling depth is too deep, the number of drilling holes is too large, the cost is too high, and the Terrain restrictions, etc. [0003] Pressurized water test is an important part of engineering geological exploration, and its purpose is to obtain hydrogeological data of rock formations. However, the current pressurized water test device c...

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
Patent Type & Authority Patents(China)
IPC IPC(8): E21B49/00E21B47/00E21B47/06
CPCE21B49/00E21B47/00E21B47/06
Inventor 刘瀚闫雪峰王强曾聪赵强李信杰
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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