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

High-temperature-resistant emulsion type acid liquor thickening agent and preparation method thereof

An acid thickener and emulsion type technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve problems such as inability to meet construction requirements, achieve convenient and fast on-site construction, good stability, and improve temperature resistance Effect of Shear Resistance

Inactive Publication Date: 2022-02-25
SHAANXI UNIV OF SCI & TECH
View PDF1 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above-mentioned shortcoming of the prior art, the object of the present invention is to provide a kind of high temperature resistant emulsion type acid thickener and preparation method thereof, in order to solve the problems of powder type acid thickener and conventional emulsion acid thickener at the present stage. Thickener can not meet technical problems such as 200-220 ℃ high temperature deep well reservoir acidification and acid fracturing construction requirements

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
  • High-temperature-resistant emulsion type acid liquor thickening agent and preparation method thereof
  • High-temperature-resistant emulsion type acid liquor thickening agent and preparation method thereof
  • High-temperature-resistant emulsion type acid liquor thickening agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A preparation method of a high temperature resistant emulsion type acid thickener, comprising the following steps:

[0037] S1: Mix 6 parts of acrylamide (AM), 12 parts of methacryloylpropyl trimethyl ammonium chloride (MAPTAC), 9 parts of dimethyl diallyl ammonium chloride (DMDAAC), 3 parts of N-ethylene Nylpyrrolidone (NVP), 2 parts of tert-butyl hydroperoxide and 2 parts of sodium formate are added to 30 parts of deionized water under the action of magnetic stirring, until the substances are completely dissolved to obtain a mixed solution, and the concentration used is 20-30% Hydroxide Sodium adjustment adjusts the pH value of the mixed solution to 6, and keeps the temperature of the mixed solution below 30°C. After adjusting, cool to room temperature to obtain an aqueous phase solution;

[0038] S2: Mix 1 part of Span-80, 0.5 part of Span-83, 0.5 part of Tween-80, a total of 2 parts of emulsifier and 30 parts of white oil under the action of magnetic stirring to ob...

Embodiment 2

[0043] A preparation method of a high temperature resistant emulsion type acid thickener, comprising the following steps:

[0044]S1: Mix 6 parts of acrylamide (AM), 12 parts of methacryloylpropyl trimethyl ammonium chloride (MAPTAC), 9 parts of dimethyl diallyl ammonium chloride (DMDAAC), 3 parts of N-ethylene Nylpyrrolidone (NVP), 1 part of potassium persulfate and 1.5 parts of dodecyl mercaptan were added to 30 parts of deionized water under the action of magnetic stirring until the substances were completely dissolved to obtain a mixed solution with a concentration of 20 to 30%. Sodium hydroxide is adjusted to adjust the pH value of the mixed solution to 5, and the temperature of the mixed solution is always kept below 30°C. After adjusting, cool to room temperature to obtain an aqueous phase solution;

[0045] S2: Mix 1.75 parts of Span-80, 0.875 parts of Span-83, 0.875 parts of OP-10, a total of 3.5 parts of emulsifier and 30 parts of cyclohexane under the action of mag...

Embodiment 3

[0050] A preparation method of a high temperature resistant emulsion type acid thickener, comprising the following steps:

[0051] S1: Mix 4 parts of acrylamide (AM), 8 parts of methacryloylpropyl trimethyl ammonium chloride (MAPTAC), 6 parts of dimethyl diallyl ammonium chloride (DMDAAC), 2 parts of N-ethylene Nylpyrrolidone (NVP), 1 part of potassium persulfate and 1 part of isopropanol are added into 50 parts of deionized water under the effect of magnetic stirring, until the substance is completely dissolved to obtain a mixed solution, and the use concentration is 25% sodium hydroxide for adjustment The pH value of the mixed solution is up to 4, and the temperature of the mixed solution is kept below 30°C all the time. After adjusting, cool to room temperature to obtain an aqueous phase solution;

[0052] S2: Mix 2 parts of Span-80, 1 part of Span-83, 1 part of TX-15, a total of 4 parts of emulsifier and 20 parts of isoparaffin IsoparM under the action of magnetic stirrin...

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

PropertyMeasurementUnit
shear viscosityaaaaaaaaaa
shear viscosityaaaaaaaaaa
shear viscosityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a high-temperature-resistant emulsion type acid liquor thickening agent and a preparation method thereof, belongs to the technical field of oil and gas field exploitation, and solves the technical problems that a powder type acid liquor thickening agent and a conventional emulsion type acid liquor thickening agent at the present stage cannot meet the construction requirements of acidification and acid fracturing of a deep well reservoir at the high temperature of 200-220 DEG C and the like. By adopting an inverse emulsion polymerization method and introducing two cationic monomers in the polymerization process, the prepared high-temperature emulsion type acid liquor thickening agent has excellent acid solubility, can quickly achieve tackifying and thickening effects when being dissolved in acid liquor, and is convenient and quick to construct on site. By introducing rigid molecular groups, the temperature resistance of the acid liquid thickening agent is improved, and the acid liquid thickening agent can play a good acidizing effect in a reservoir at 200-220 DEG C, and is suitable for acidizing and acid fracturing site construction of a high-temperature deep well.

Description

technical field [0001] The invention belongs to the technical field of oil and gas field exploitation, and in particular relates to a high-temperature-resistant emulsion-type acid thickener and a preparation method thereof. Background technique [0002] Acidizing and acid fracturing technology, as the main stimulation technology for carbonate reservoirs, has developed rapidly since its appearance in the 1980s. Especially in recent years, with the continuous development of low-permeability oil fields, acidizing technology has been increasingly researched attention. Acidizing and acid fracturing technology, as one of the important measures to increase production and injection of oil and gas wells, has broad application prospects in the field of oil and gas field development. As the main additive of acidification and acid fracturing technology, acid thickener can be dissolved in acid solution to increase viscosity and thicken, reduce the migration speed of hydrogen ions in aci...

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): C08F220/34C08F220/56C08F226/02C08F226/10C09K8/74C09K8/68
CPCC08F220/34C09K8/74C09K8/68C09K8/882C08F220/56C08F226/02C08F226/10
Inventor 王磊魏向阳赖小娟党志强张小鑫李朋柳小虎张雯娟
Owner SHAANXI UNIV OF SCI & TECH
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