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

A directional fracturing roof control and pressure relief device for hard roof

A technology of directional fracturing and hard roof, which is applied in ground mining, earth drilling, underground mining, etc., can solve problems such as unsatisfactory pressure relief effect, high equipment requirements, and high energy consumption, so as to improve efficiency and effect, improve High-pressure cutting ability to ensure the effect of operation effect

Active Publication Date: 2022-02-25
NORTH CHINA INST OF SCI & TECH
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current pressure relief for fracturing is relatively simple. Generally, direct high-pressure fracturing is performed in the borehole. However, due to the relatively hard roof, the pressure relief effect is not ideal, and the required pressure is extremely high. High equipment requirements and high energy consumption

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 directional fracturing roof control and pressure relief device for hard roof
  • A directional fracturing roof control and pressure relief device for hard roof
  • A directional fracturing roof control and pressure relief device for hard roof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The following will be combined with Figure 1-3 The present invention is described in detail, and the technical solutions in the embodiments of the present invention are clearly and completely described. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] The present invention provides a directional fracturing control roof pressure relief method for a hard roof through improvement, which adopts a directional fracturing control roof pressure relief device, which includes a fracturing fluid supplier 1, a high-pressure pumping unit 3, High-pressure cutting particle supply mechanism, Venturi tube 9, fracturing tube 10, fracturing and cutting head 11 and hole washing head 12, characterized in that ...

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 discloses a directional fracturing control roof pressure relief device for a hard roof, which can effectively improve the pressure relief efficiency and effect, to ensure the pressure relief ability, the invention can directly send the cutting particles into the cutting fluid or the hole washing fluid by using the Venturi tube when cutting the groove, and can directly realize the radial groove cutting process to ensure the subsequent pressure relief effect, This method of the present invention does not require special setting of the cutting equipment, and the work can be completed without pulling out the fracturing pipe after the hole is washed, ensuring the operation effect. The present invention can realize radial grooving treatment. When grooving, the high-pressure spray sleeve is set to rotate. Through its rotation, the cutting particles can be given impact and spray force in the direction of rotation, which improves the high-pressure cutting ability and realizes fast and efficient operation.

Description

technical field [0001] Specifically, the invention relates to a directional fracturing control roof pressure relief device for a hard roof, and relates to the related field of directional fracturing pressure relief for a hard roof. Background technique [0002] If the hard roof cannot be relieved in time during the coal mining process, it is extremely easy to form a large-area suspended roof. Once the suspended roof breaks, it will instantly cause damage to the roadway and seriously threaten the safety of the coal mine. Therefore, the weakening of the hard roof is the key to the control of coal mine roof disasters. At present, the most commonly used methods of weakening the hard roof are blasting broken roof and hydraulic fracturing. Due to the high safety hazard of blasting broken roof, it will greatly interfere with production; hydraulic fracturing uses high-pressure water to break the roof, and the construction process is relatively simple. The controllability and operab...

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): E21C41/18
CPCE21C41/18
Inventor 殷帅峰王玉怀张军
Owner NORTH CHINA INST OF SCI & TECH
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