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

Alcohol-base fracturing fluid

A fracturing fluid and alcohol-based technology, applied in the field of fracturing fluids, can solve the problems of fracturing reconstruction failure, increase formation damage, formation pore blockage, etc. Effect

Inactive Publication Date: 2007-08-01
CHANGQING GASOLINEEUM EXPLORATION BUREAU
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, at present, more than 90% of the fracturing fluids used in the fracturing reconstruction of oil and gas fields are water-based fracturing fluids with water as the dispersion medium. For characteristic oil and gas formations, water-based fracturing fluids have fatal flaws: because the formation pressure coefficient is much lower than the pressure coefficient of water in the wellbore, it is easy to cause difficulty in liquid flowback and increase damage to the formation; due to the formation water lock It is easy to cause the blockage of formation pores and make the fracturing treatment invalid.

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

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0045] 10m on site 3 Add 7800Kg of methanol into a container with agitator, slowly add 30Kg of cationic polyacrylamide while stirring, then add 1Kg of zirconium oxychloride, and continue to stir for 10 minutes so that the liquid is fully mixed to form solution A 1 .

[0046] at 2m 3 Add 900Kg of clean water into the container, and slowly add 50Kg of industrial hydrochloric acid and 50Kg of hydrogen peroxide successively while stirring with a pump or a stirrer, and stir to make solution B for later use.

[0047] During fracturing construction, pump solution A 1 At the same time, press solution B with solution A 1 With solution A 1 : solution B = 100 liters: 2.0 liters volume ratio mixed to form methanol jelly fracturing fluid.

specific Embodiment 2

[0048] 10m on site 3 Add 7800Kg of methanol into a container with agitator, and slowly add 30Kg of cationic polyacrylamide while stirring, then add 1Kg of zirconium oxychloride and 100Kg of surfactant respectively, and continue stirring for 10 minutes so that the liquid is fully mixed and formed Solution A 2 .

[0049] Solution B was prepared according to the method in "Specific Example 1" for use.

[0050] During fracturing construction, pump solution A 2 At the same time, solution B, liquid CO 2 Press with solution A 2 With solution A 2 : Solution B: Liquid CO 2 = 100 liters: 2.0 liters: 100 liters volume ratio is mixed to form CO 2 Methanol jelly foam fracturing fluid.

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

An alcohol-based fracturing liquid for oil or gal well is prepared from low-carbon alcohol and its thickening agent, water, cross-linking agent, degelating agent, pH regulator and surfactant. It can remove the water locking in stratum, so benefiting the return of liquid from stratum.

Description

1. Technical field: [0001] The invention relates to a fracturing fluid used in the fracturing stimulation process of an oil well or a natural gas well, specifically an alcohol-based fracturing fluid. 2. Background technology: [0002] In the existing technology, at present, more than 90% of the fracturing fluids used in the fracturing reconstruction of oil and gas fields are water-based fracturing fluids with water as the dispersion medium. For characteristic oil and gas formations, water-based fracturing fluids have fatal flaws: because the formation pressure coefficient is much lower than the pressure coefficient of water in the wellbore, it is easy to cause difficulty in liquid flowback and increase damage to the formation; due to the formation water lock It is easy to cause the clogging of formation pores and make the fracturing stimulation invalid. 3. Contents of the invention: [0003] The purpose of the present invention is to provide an alcohol-based fracturing fl...

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): C09K8/12E21B43/22
Inventor 汪义发谢璇杜彪王俊旭邓卫珍苗林杨海燕廖乐军
Owner CHANGQING GASOLINEEUM EXPLORATION BUREAU
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