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

Sodium persulfate microcapsule capable of controllable concentrated release at fixed time and preparation method thereof

A technology of sodium persulfate and microcapsules, which is applied in the field of chemical materials, oil fields, and polymer gel water plugging operations in oil fields. It can solve the problems of short controlled release time and achieve the effects of low cost, simple operation, and simple process.

Active Publication Date: 2012-08-08
CHINA PETROLEUM & CHEM CORP +1
View PDF3 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to propose controllable timing release sodium persulfate microcapsules, to overcome the shortcoming that the current microencapsulated capsule core material can only rely on slow release in the corresponding system, and the time of controlled release is shorter

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
  • Sodium persulfate microcapsule capable of controllable concentrated release at fixed time and preparation method thereof
  • Sodium persulfate microcapsule capable of controllable concentrated release at fixed time and preparation method thereof
  • Sodium persulfate microcapsule capable of controllable concentrated release at fixed time and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] 1. Weigh each raw material with the following schemes:

[0016] Scheme 1: Liquid paraffin: 13.2%, sodium persulfate: 7.1%, cetyltrimethylammonium bromide: 0.71%, styrene: 5.7%, vinyl acetate: 1.3%, methacrylic acid: 0.14%, The rest is chloroform, totaling 100%.

[0017] Scheme 2: Liquid paraffin: 13%, sodium persulfate: 13%, cetyltrimethylammonium bromide: 0.65%, styrene: 6.8%, vinyl acetate: 1.6%, methacrylic acid: 0.17%, The rest is chloroform, totaling 100%.

[0018] Scheme 3: liquid paraffin: 7.8%, sodium persulfate: 7.8%, cetyltrimethylammonium bromide: 0.8%, styrene: 5%, vinyl acetate: 1.1%, methacrylic acid: 0.12%, The rest is chloroform, totaling 100%.

[0019] Scheme 4: liquid paraffin: 7.7%, sodium persulfate: 7.7%, cetyltrimethylammonium bromide: 0.8%, styrene: 5.5%, vinyl acetate: 1.25%, methacrylic acid: 0.14%, The rest is chloroform, totaling 100%.

[0020] Scheme 5: Liquid paraffin: 14.1%, sodium persulfate: 7%, cetyltrimethylammonium bromide: 0.7%, ...

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

A sodium persulfate microcapsule capable of controllable concentrated release at fixed time and a preparation method thereof relate to the technical fields of chemical materials and oil field, especially the field of oil field polymer gel water shut off work. According to the present invention, high-molecular materials of styrene, vinyl acetate and methacrylic acid are employed to form a composite shell material, which wraps up sodium persulfate solid particles with strong oxidizability, thereby realizing microencapsulation, fundamentally achieving that sodium persulfate of microencapsulationin corresponding polymer system can be controlled to release concentratedly at a certain time in 1-10 days and cause gelatinization of water-soluble polymers, and realizing down-hole timing profile control and water shut off to enhance oil recovery.

Description

technical field [0001] The invention relates to the technical field of chemical materials and oil fields, in particular to the technical field of oil field polymer gel water plugging operation. Background technique [0002] Microcapsule technology is a kind of capsule that uses a film-forming material (thermoplastic polymer material is often used) as a shell substance, and uses a solid, liquid or gas as a core substance to coat a capsule with a core-shell structure. This shell-core structure makes the microcapsules have Protection and barrier properties, so that the core material protected by the shell will not be affected by the intrusion of the external environment, and at the same time have barrier properties that will not escape to the outside world. [0003] The preparation technology of microcapsules began in the 1930s and developed rapidly in the mid-1970s. Microcapsules are composed of core material and wall material. The core material is usually a substance that...

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): C09K8/42
Inventor 刘天晴左明明汤洁
Owner CHINA PETROLEUM & CHEM CORP
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