Production method of water-soluble phenolic resin cross-linking agent used for water shut-off and profile control of oil field

A technology of water-soluble phenolic resin and production method, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., and can solve the problems of reduced activity of crosslinking agents, high content of tertiary hydroxyphenols and quaternary hydroxyphenols, etc.

Inactive Publication Date: 2013-07-24
XINJIANG HUAYOU TECH SERVICE
View PDF3 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The production method of the existing water-soluble phenolic resin cross-linking agent is: add formaldehyde and phenol to the reaction kettle, after heating to 50-60 ° C, add sodium hydroxide dropwise or in batches under the condition of stirring, and in the middle stage of the reaction Concentr

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
  • Production method of water-soluble phenolic resin cross-linking agent used for water shut-off and profile control of oil field
  • Production method of water-soluble phenolic resin cross-linking agent used for water shut-off and profile control of oil field
  • Production method of water-soluble phenolic resin cross-linking agent used for water shut-off and profile control of oil field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Add 680kg of formaldehyde, 300kg of phenol, and 18kg of sodium hydroxide into the reactor to prepare according to the above-mentioned production process, and the temperature of the circulating cooling water is 25°C. (2.12~2.57): 1

Embodiment 2

[0036] Add 690kg of formaldehyde, 290kg of phenol, and 19kg of sodium hydroxide into the reactor to prepare according to the above-mentioned production process, and the temperature of the circulating cooling water is 10°C.

[0037] Composition analysis of water-soluble phenolic resin crosslinking agent (Table 1):

[0038]

[0039] Cooperate with infrared spectrometer, ultraviolet spectrometer and chromatographic instrument to carry out qualitative and quantitative analysis on the product components, and fit the qualitative and quantitative detection data to the obtained curve as follows: figure 1 , figure 2 shown.

Embodiment 3

[0041] Add 680kg of formaldehyde, 320kg of phenol, and 20kg of sodium hydroxide into the reactor to prepare according to the above-mentioned production process, and the temperature of the circulating cooling water is 25°C.

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 provides a production method of a water-soluble phenolic resin cross-linking agent used for water shut-off and profile control of an oil field. The method comprises the following steps of: sequentially adding methanal, phenol and sodium hydroxide to a reaction kettle and mixing to obtain a mixed material, wherein a mass ratio of methanal to phenol is (2.12-2.57):1; pumping the mixed material in the reaction kettle into a cooler; cooling the mixed material to flow back to the reaction kettle; and performing circulating cooling to allow the temperature of the mixed material in the reaction kettle not to be changed any more. According to the method, heat generated by a reaction is radiated by the cooler timely, so that a reaction between methanal and phenol is mainly a primary reaction, and is prevented from being transited to tertiary hydroxyphenol and quaternary hydroxyphenol; end products are mainly primary hydroxyphenol and secondary hydroxyphenol, and a small amount of free aldehyde and free hydroxyphenol; and the activity of the cross-linking agent for forming weak gel with HPAM (Hydrolyzed Polyacryamide) is improved.

Description

technical field [0001] The invention relates to a production method of a water-soluble phenolic resin cross-linking agent. The cross-linking agent forms a weak gel with HPAM (hydrolyzed polyacrylamide) at a certain temperature and is used in oil fields to improve the formation water absorption profile and liquid production profile. Background technique [0002] The production method of the existing water-soluble phenolic resin cross-linking agent is: add formaldehyde and phenol to the reaction kettle, after heating to 50-60 ° C, add sodium hydroxide dropwise or in batches under the condition of stirring, and in the middle stage of the reaction Concentrate by vacuum filtration, cool down to normal temperature with cold water or freezing liquid in the later stage, and then pack. This method will easily lead to too high content of tertiary hydroxyphenols and quaternary hydroxyphenols in the product, which will reduce the activity of the crosslinking agent. Contents of the inve...

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
IPC IPC(8): C08G8/10C09K8/588
Inventor 王能成李江鹏
Owner XINJIANG HUAYOU TECH SERVICE
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

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap