Coal-rock water-acid high-pressure pre-cracking softening anti-scouring complete set of equipment and methods

A high-pressure pre-cracking, coal-rock technology, applied in the field of coal-rock water-acid high-pressure pre-cracking softening, anti-scouring and anti-reflection complete equipment, which can solve the problems of multiple equipment, troublesome operation, and high cost

Active Publication Date: 2022-06-21
XIAN UNIV OF SCI & TECH +1
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional method is single water injection first, and then single acid injection. The pressure of acid injection is relatively small. The acid solution needs to be stored on the ground and stored in tanks, and then transported to the underground and injected by a low-pressure acid pump, so as to expand the cracks in the coal and rock mass and drive away the gas. , to achieve softening, but water and acid are injected separately, more equipment is required, the cost is higher, and the operation is more troublesome

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
  • Coal-rock water-acid high-pressure pre-cracking softening anti-scouring complete set of equipment and methods
  • Coal-rock water-acid high-pressure pre-cracking softening anti-scouring complete set of equipment and methods
  • Coal-rock water-acid high-pressure pre-cracking softening anti-scouring complete set of equipment and methods

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] see Figure 1-7 , the present invention provides a complete set of equipment and methods for coal and rock water-acid high-pressure pre-splitting, softening, anti-scour and anti-reflection: including a drilling system 1, a measurement and control system 2, a sealing system 3 and a water-acid coupled pressurization system, the drilling system 1 It includes a drilling rig 101, a drill pipe 102 and a drill bit 105 to drill holes ...

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 complete set of equipment and method for coal rock water-acid high-pressure pre-cracking, softening, anti-scouring and anti-reflection enhancement, including a drilling system, a measurement and control system, a sealing system and a water-acid coupling pressurization system. The drilling system includes a tunnel drilling machine and a drill pipe. and drill bits. The measurement and control system includes gamma ray logging tools and borehole peepers to record drilling location parameters, lithology, fracture development and detect pre-fracture effects. The hole sealing system includes staged fracturing sealers, water‑ The acid coupling pressurization system includes a high-pressure water pump assembly, a gas booster pump assembly, a gas-water mixing pipe assembly, and a multi-hole parallel liquid supply pipe network; the invention combines water injection and acid injection, and adds a high-pressure carbon dioxide filling pump, Directly fill carbon dioxide gas into the high-pressure gas-water mixing pipe, inject acid after the pump, avoid acid liquid from corroding the high-pressure water pump, realize high-pressure acid injection, turn on the water pump alone, you can realize hydraulic fracturing, turn on the carbon dioxide filling pump alone to realize high-pressure gas Fracture, both are turned on at the same time to realize acid hydraulic fracturing.

Description

technical field [0001] The invention relates to the technical field of coal mine safety, in particular to a complete set of equipment and method for coal rock water-acid high pressure pre-splitting, softening, anti-scour and anti-penetration. Background technique [0002] During coal mining, it is often encountered that the coal body is dense and hard, and the gas permeability is poor, resulting in low cutting efficiency of the shearer, difficulty in discharging the top coal, difficulty in gas drainage in the coal seam, easy accumulation of gas, and gas accidents. Another situation is the hard roof above the coal body. After the working face is mined, the overhang area of ​​the goaf is large, and the elastic energy of the rock mass accumulates a lot, which is easy to form a large area of ​​the roof to press and impact ground pressure. [0003] The traditional method is to inject water first, and then inject acid. The acid injection pressure is small. The acid needs to be sto...

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): E21B43/27
CPCE21B43/26E21B43/261
Inventor 李根威邓广哲张旭东王健航赵世振
Owner XIAN UNIV OF SCI & TECH
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