Polycation anti-swelling agent as well as preparation method and application thereof

A multi-cation, anti-swelling agent technology, applied in the preparation of carboxylic acid halide, chemical instruments and methods, preparation of organic compounds, etc., can solve the problems of increased water injection pressure, reduced oil recovery, and decreased oil permeability. , to extend the water injection cycle, prevent hydration swelling, and reduce oil layer damage.

Active Publication Date: 2020-07-31
XIAN AODE PETROCHEM ENG TECH CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the process of oil field production, the clay in the oil layer is prone to hydration swelling, and the gaps between the clay particles after hydration swelling become smaller, and the clay particles after hydration swelling tend to disperse and transfer to the pores between the clay particles As a result, the permeability of the oil layer decreases, the water injection pressure increases, and the recovery of crude oil is reduced

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
  • Polycation anti-swelling agent as well as preparation method and application thereof
  • Polycation anti-swelling agent as well as preparation method and application thereof
  • Polycation anti-swelling agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] Concrete, a kind of preparation method of polycation antiswelling agent, comprises the following steps:

[0027] (1) Add dipentaerythritol and propionyl chloride into a three-necked flask, wherein the molar ratio of dipentaerythritol and propionyl chloride is 1:(2.8-3). After the addition is complete, stir the reaction at 35-45°C for 2-4 hours, and cool to room temperature. Neutralize with sodium hydroxide solution, wherein the concentration of the sodium hydroxide solution is 5% (mass fraction). Wash with water, extract with an organic solvent, and distill off the solvent under reduced pressure to obtain viscous liquid intermediate Ⅰ.

[0028] (2) Add the viscous liquid intermediate I obtained in step (1) into a four-necked flask, and the added amount of the viscous liquid intermediate I is 0.025 mol. Then the first solvent dimethyl sulfoxide (DMSO) was added into the four-neck flask in an amount of 130 mL. After it is completely dissolved, powdered sodium hydroxide...

Embodiment 1

[0033] Add dipentaerythritol and propionyl chloride into a three-necked flask at a molar ratio of 1:2.8. After the addition is complete, stir and react at 40°C for 3h, and cool to room temperature. Neutralize with 5% (mass fraction) sodium hydroxide solution, wash with water, extract with organic solvent, and distill off the solvent under reduced pressure to obtain viscous liquid intermediate I. Take 0.025mol of the viscous liquid intermediate I and add it to a four-necked flask, then add 130mL dimethyl sulfoxide (DMSO) into the four-necked flask, and after it is completely dissolved, add 4g of powdered sodium hydroxide and stir the reaction at 35°C 0.5h, then add 0.05mol 3-chloro-2-hydroxypropyltrimethylammonium chloride into the solution containing dimethyl sulfoxide and other solvents, raise the temperature to 80°C, react for 6h, and suction filter the above solution, Intermediate II was obtained as a solid product. Add 0.02mol of solid product Intermediate II to 21.93g of...

Embodiment 2

[0035]Add dipentaerythritol and propionyl chloride into a three-necked flask at a molar ratio of 1:2.85. After the addition is complete, stir and react at 40°C for 3h, and cool to room temperature. Neutralize with 5% (mass fraction) sodium hydroxide solution, wash with water, extract with organic solvent, and distill off the solvent under reduced pressure to obtain viscous liquid intermediate I. Take 0.025mol of the viscous liquid intermediate I and add it to a four-necked flask, then add 130mL dimethyl sulfoxide (DMSO) into the four-necked flask, and after it is completely dissolved, add 4g of powdered sodium hydroxide and stir the reaction at 35°C 0.5h, then add 0.05mol 3-chloro-2-hydroxypropyltrimethylammonium chloride into the solution containing dimethyl sulfoxide and other solvents, raise the temperature to 80°C, react for 6h, and suction filter the above solution, Intermediate II was obtained as a solid product. Add 0.02mol of solid product Intermediate II to 21.93g of...

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 polycation anti-swelling agent as well as a preparation method and application thereof. The preparation method comprises the following steps: 1) mixing dipentaerythritol andpropionyl chloride to react; neutralizing with an alkaline solution, washing with water, and extracting with an organic solvent to obtain a viscous liquid intermediate I; 2) adding a first solvent into the viscous liquid intermediate I, adding sodium hydroxide after the first solvent is completely dissolved, carrying out a stirring reaction for 0.5-1 h at a temperature of 30-40 DEG C, then adding3-chloro-2-hydroxypropyl trimethyl ammonium chloride, carrying out a heating sufficient reaction, and carrying out suction filtration on an obtained solution to obtain a solid product intermediate II;and 3) adding the solid product intermediate II into a second solvent, adding hexamethylene diisocyanate while stirring, heating to 40-50 DEG C, reacting for 3-5 hours, carrying out suction filtration, and drying to obtain the polycationic anti-swelling agent. According to the polycation anti-swelling agent, the problems that clay in an oil layer is prone to hydration swelling, hydrated and expanded clay particles are prone to dispersion and transfer, the permeability of the oil layer is reduced, and the water injection pressure is increased are solved.

Description

technical field [0001] The invention relates to the field of oilfield reinjection water, in particular to a multi-cation anti-swelling agent and its preparation method and application. Background technique [0002] In the process of oil field production, the clay in the oil layer is prone to hydration swelling, and the gaps between the clay particles after hydration swelling become smaller, and the clay particles after hydration swelling tend to disperse and transfer to the pores between the clay particles As a result, the permeability of the oil layer will decrease, the water injection pressure will increase, and the oil recovery rate will be reduced. From this point of view, it is very important to provide an anti-swelling agent that can reduce the volume of hydration-swelled clay particles in the oil reservoir. Over the years, in order to protect the reservoir and reduce the damage caused by the water sensitivity of clay minerals to the reservoir, people have done a lot ...

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): C09K8/035C07C271/20C07C269/02
CPCC09K8/035C07C271/20C07C269/02C07C213/00C07C213/06C07C67/14C09K2208/12C07C217/28C07C69/33
Inventor 王晨韩非杨晓武李刚辉
Owner XIAN AODE PETROCHEM ENG TECH CO LTD
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