Unlock instant, AI-driven research and patent intelligence for your innovation.

Anti-swelling agent and preparation method thereof

A technology of anti-swelling agent and organic solvent, which is applied in the field of anti-swelling agent and its preparation, can solve the problems of poor anti-swelling effect and single anti-swelling agent, and achieve the effects of not easy falling off, improving binding force and avoiding dissociation

Active Publication Date: 2019-12-17
CHINA PETROLEUM & CHEM CORP +1
View PDF15 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides an anti-swelling agent and a preparation method thereof, which solves the drawbacks of the existing anti-swelling agents which only rely on the attraction of positive and negative charges to achieve anti-swelling and poor anti-swelling effect, can fully prolong the effective period of the anti-swelling agent, improve the service life, save cost

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-swelling agent and preparation method thereof
  • Anti-swelling agent and preparation method thereof
  • Anti-swelling agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The anti-swelling agent of this embodiment includes the following raw materials in parts by weight: 20 parts of benzyltrimethylammonium chloride, 5 parts of vinyltriethoxysilane, 1 part of hydrochloric acid, and 50 parts of acetone.

[0025] The preparation method of anti-swelling agent described in the present embodiment, comprises the steps:

[0026] 1) Weigh each raw material by weight;

[0027] 2) Add 25 parts of acetone into the reaction kettle, add benzyl ammonium chloride evenly at room temperature 25°C and stirring speed of 1000 rpm, after mixing, drop hydrochloric acid into the mixture at a uniform speed, and the dropping time is After 5 minutes, the temperature of the mixed solution was raised to 70°C after dropping, and the reaction solution A was obtained;

[0028] 3) Add 25 parts of acetone into the beaker, and evenly drop vinyltriethoxysilane into the beaker at a stirring speed of 1000 rpm at room temperature at 25 °C for 10 minutes. Thoroughly stir for ...

Embodiment 2

[0031] The anti-swelling agent of this embodiment includes the following raw materials in parts by weight: 24 parts of dimethylbenzyl ammonium chloride, 7 parts of vinyltrimethoxysilane, 2 parts of hydrochloric acid, and 45 parts of ethanol.

[0032] The preparation method of anti-swelling agent described in the present embodiment, comprises the steps:

[0033] 1) Weigh each raw material by weight;

[0034] 2) Add 22.5 parts by weight of ethanol to the reaction kettle, and add dimethyl benzyl ammonium chloride evenly at a normal temperature of 25°C and a stirring speed of 1000 rpm. After mixing, drop hydrochloric acid into the mixture at a uniform speed. In the solution, the dropping time is 5min. After the dropping, the mixed solution is heated to 70°C to obtain the reaction solution A;

[0035] 3) Add the remaining amount of ethanol into the beaker, and evenly drop vinyltrimethoxysilane into the beaker at a stirring speed of 1000 rpm at a normal temperature of 25 °C for 10 ...

Embodiment 3

[0038] The anti-swelling agent of the present embodiment includes the following raw materials in parts by weight: 30 parts of dodecyl dimethyl benzyl ammonium chloride, 10 parts of vinyl tris (β-methoxyethoxy) silane, 1 part of hydrochloric acid, 55 parts ethanol.

[0039] The preparation method of anti-swelling agent described in the present embodiment, comprises the steps:

[0040] 1) Weigh each raw material by weight;

[0041] 2) Add 27.5 parts by weight of ethanol to the reaction kettle, and add dodecyl dimethyl benzyl ammonium chloride evenly at room temperature at 25°C and a stirring speed of 1000 rpm. Drop into the mixed solution, the dropping time is 5min, after the drop is completed, the temperature of the mixed solution is raised to 70°C to obtain the reaction solution A;

[0042] 3) Add the remaining amount of ethanol into the beaker, and evenly drop vinyltris(β-methoxyethoxy)silane into the beaker at room temperature at 25°C at a stirring speed of 1000 rpm for 10...

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-swelling agent and a preparation method thereof, belonging to a consolidation anti-swelling agent. The anti-swelling agent comprises the following raw materials in parts by weight: 20-30 parts of benzyl ammonium chloride, 5-10 parts of a silane coupling agent, 1-2 parts hydrochloric acid, 40-60 parts of an organic solvent, according to the characteristics of high argillaceous oil reservoir, the anti-swelling agent specifically adopts a special raw material proportion, adopts the silane coupling agent which can effectively combine organic matters with inorganic matters, and permanently consolidates a cationic surfactant with positive charges on the surface of a crystal layer, thus avoiding the positive charges from being replaced by water, forming stable chemical bonds, improving the binding force with the crystal layer, and preventing the crystal layer from falling off, thus achieving the purpose of long-term anti-swelling.

Description

technical field [0001] The invention belongs to the technical field of anti-swelling agents, and in particular relates to an anti-swelling agent and a preparation method thereof. Background technique [0002] Clay minerals widely exist in oil reservoirs, and about 97% of the oil reservoirs in the world contain clay minerals to varying degrees. Generally, when the reservoir contains 5%-20% clay, it is considered to be an oil layer with high clay content. If improper measures are taken during oil and gas development, it will cause hydration expansion and dispersion migration of clay minerals, thereby blocking formation pores. The throat of the structure reduces the permeability of the formation and causes oil and gas formation damage. During the swelling process, the clay absorbs water into the crystal structure, resulting in an increase in the volume of the clay, thereby blocking the formation pores; during the migration process, the clay material is dispersed by the foreign...

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): C09K8/035
CPCC09K8/035C09K2208/12
Inventor 孙德旭吴琼张广中渠慧敏韦良霞戴群丁晓芳赵洪涛王海燕李琳
Owner CHINA PETROLEUM & CHEM CORP