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

Anti-erosion hydraulic fracturing spraying device and fracturing method

A technology of hydraulic fracturing and injection devices, which is applied in the direction of earthwork drilling, production fluid, wellbore/well components, etc., which can solve problems such as cost increase, coiled tubing erosion, and restricted application, so as to eliminate erosion and improve Protective effect, anti-clogging effect

Pending Publication Date: 2020-11-03
XI'AN PETROLEUM UNIVERSITY
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when this technology is used for fracturing, the cuttings splashed back under its strong injection pressure and jet velocity and the fracturing fluid reflected back along the casing perforation will cause serious erosion to the injector and coiled tubing , and sometimes even pierces the coiled tubing, which greatly shortens the service life of the coiled tubing and the sand blaster, thereby greatly increasing the cost of fracturing and restricting the application of this technology in the oil field

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
  • Anti-erosion hydraulic fracturing spraying device and fracturing method
  • Anti-erosion hydraulic fracturing spraying device and fracturing method
  • Anti-erosion hydraulic fracturing spraying device and fracturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The length of the horizontal section of well A2 in He 8 section of an oilfield is 765m, and the well depth is 6500m. The designed fracturing section is 4 sections, each section has 6 clusters, the cluster spacing is 25m, and the designed sand mixing fluid volume of each section is 45m 3 , fracturing fluid 3000m 3 , the proppant chooses ceramsite of 30-50 mesh, and the designed sand addition amount of the proppant is 500m 3 . The size of the new anti-erosion hydraulic fracturing injection device selected according to the diameter of the downhole oil pipe is: the diameter of the injector joint is 121.11mm; the length of the spray gun is 550mm, the height is 200mm, and the width is 200mm; the width of the protective nozzle is 2mm; the diameter of the fracturing nozzle is 150mm; the diameter of the fracturing nozzle is 6mm; the depth of the reflux tank is 120mm; the length of the guide head is 120mm; the diameter of the inlet section of the flow channel of the protective n...

Embodiment 2

[0054] The length of the horizontal section of Well A32 in the Hechuan section of Yanchang Oilfield is 900m, and the well depth is 4500m. The designed fracturing section is 6 sections, each section has 4 clusters, the cluster spacing is 20m, and the designed sand mixing fluid volume of each section is 35m 3 , fracturing fluid 5000m 3 , the proppant chooses 50-100 mesh ceramsite, and the designed sand addition amount of the proppant is 1000m 3 . The size of the new anti-erosion hydraulic fracturing injection device selected according to the diameter of the downhole tubing is: the diameter of the injector joint is 168.14mm; the length of the spray gun is 550mm, the height is 240mm, and the width is 240mm; the width of the protective nozzle is 3mm; the diameter of the fracturing nozzle is 200mm; the diameter of the fracturing nozzle is 8mm; the depth of the reflux tank is 150mm; the length of the guide head is 130mm; the diameter of the inlet section of the flow channel of the p...

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 an anti-erosion hydraulic fracturing spraying device and a fracturing method. An ejector connector is arranged at one end of a spray gun, a plurality of fracturing spray headsare evenly arranged on a gun body of the spray gun in the circumferential direction, fracturing spray nozzles are arranged on the fracturing spray heads, and protective spray nozzles are arranged on the position, on the two sides of each fracturing spray head, of the gun body of the spray gun; and the spray gun is provided with a flow channel communicating with each protective spray nozzle, one ends of the flow channels extend to an inner cavity of the spray gun, the other ends of the flow channels communicate with inlets of the protective spray nozzles, a screen cloth is arranged at an inletof each flow channel, and the protective spray nozzles can spray liquid films. The liquid films can resist back-splashed rock debris and fracturing liquid sprayed out of the fracturing spray nozzle tobe ejected back. During construction, liquid is ejected from the fracturing spray nozzle at a high speed for perforation and fracturing operation, and the protective spray nozzles 3 eject the fan-shaped liquid films with certain strength to resist various back-splashed rock debris and impurities, so that the spray gun and a coiled tubing are protected, the overall service life of an ejector is greatly prolonged, the working time of the ejector is prolonged, and the fracturing cost is reduced.

Description

technical field [0001] The invention relates to the field of oil and gas field development, in particular to an anti-erosion hydraulic fracturing injection device and a fracturing method. Background technique [0002] At present, hydraulic fracturing technology has always been the most effective means of reservoir stimulation to develop oil and gas resources in unconventional reservoirs. Among them, the coiled tubing sandblasting fracturing technology is simple due to its simple operation, no need for mechanical isolation, short operation period, and the number of trips. In recent years, it has been applied in horizontal well sections to achieve good staged fracturing effects. However, when this technology is used for fracturing, the cuttings splashed back under its strong injection pressure and jet velocity and the fracturing fluid reflected back along the casing perforation will cause serious erosion to the injector and coiled tubing , and sometimes even pierces the coile...

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 Applications(China)
IPC IPC(8): E21B43/26E21B43/114E21B43/267
CPCE21B43/26E21B43/114E21B43/267
Inventor 周德胜王海洋接叶楠
Owner XI'AN PETROLEUM UNIVERSITY
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