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

Phosphoric Acidification Corrosion Inhibitor

A technology of acidifying corrosion inhibitor and phosphoric acid, which is applied in the field of phosphoric acid acidifying corrosion inhibitor, and achieves the effect of small addition, low cost and good synergistic effect

Active Publication Date: 2018-01-30
SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these reactions eventually lead to CaF 2 , Al(OH) 3 、Si(OH) 4 and Fe(OH) 3 Wait for precipitation to form

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
  • Phosphoric Acidification Corrosion Inhibitor
  • Phosphoric Acidification Corrosion Inhibitor
  • Phosphoric Acidification Corrosion Inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Take the preparation of phosphoric acid acidification corrosion inhibitor 1kg of the present invention as an example, it is made of the raw materials of following mass proportion:

[0019]

[0020] Its preparation method is: 80g 2-(1-(aminoethyl)imidazolin-2-yl)pyridine, 50g methyl benzotriazole sodium salt, 30g fatty alcohol polyoxyethylene ether, 40g thiourea, 70g Add ethanol to 730g of water and stir evenly.

Embodiment 2

[0022] Take the preparation of phosphoric acid acidification corrosion inhibitor 1kg of the present invention as an example, it is made of the raw materials of following mass proportion:

[0023]

[0024]

[0025] Its preparation method is identical with embodiment 1.

Embodiment 3

[0027] Take the preparation of phosphoric acid acidification corrosion inhibitor 1kg of the present invention as an example, it is made of the raw materials of following mass proportion:

[0028]

[0029] Its preparation method is identical with embodiment 1.

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 phosphorylation corrosion inhibitor which is prepared by mixing the following ingredients in percentage by mass: 6-12% of an imidazoline-pyridine compound, 4-8% of tolytriazole sodium salt, 2-5% of primary alcobol ethoxylate, 3-6% of thiourea, 7-10% of ethanol and the balance of water. The phosphorylation corrosion inhibitor provided by the invention has the advantages of being low in cost because the raw materials are easy to obtain, and being easy to degrade and environmentally friendly because the adding amount of active ingredients is small; by adoption of the phosphorylation corrosion inhibitor, the N80 steel corrosion rate is far lower than the required indicator, namely 20.0 g / (m<2>.h) within a temperature range of 90-130 DEG C, and pitting corrosion is avoided; and the requirement for blockage relieving and corrosion protection through high-temperature phosphorylation can be met in the oilfield production field.

Description

technical field [0001] The invention belongs to the technical field of corrosion inhibitors for rock matrix acidification, and in particular relates to a phosphoric acid acidification corrosion inhibitor, which can be used as a corrosion inhibitor for rock matrix acidification of oil and gas wells, power plants, chemical and metallurgical machinery and equipment for phosphoric acid pickling. Background technique [0002] Rock matrix acidizing technology is an important technology for plugging removal and production stimulation of oil wells, and soil acid is the most commonly used acid system for rock matrix acidizing. The soil acid reacts with the rock, especially when the temperature of the formation is slightly high, the reaction is intense, the acid solution is consumed too quickly, resulting in a short penetration distance of the acid solution, and at the same time, the excessive dissolution of the rock leads to a decrease in the compressive strength of the formation, whi...

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): C23F11/04
CPCC23F11/04
Inventor 刘彦锋刘世川王晓晖李俊莉张颖任海晶陈强
Owner SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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