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

Salt-resistant and shear-resistant polymer surfactant for profile control and flooding, and preparation method thereof

A surfactant and polymer technology is applied in the field of composition and preparation of polymer surfactants for salt resistance, shear resistance and flood control, and achieves the effects of improving and reducing the surface tension of oil and water, good oil displacement, and convenient use.

Inactive Publication Date: 2020-02-11
BEIJING SHENGCHANG CENTURY PETROLEUM TECH
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its interfacial tension and viscosity retention rate still cannot meet the needs of certain types of oil fields in practical applications, and its salinity resistance needs to be further improved.

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
  • Salt-resistant and shear-resistant polymer surfactant for profile control and flooding, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of anti-salt and anti-shear regulating and flooding macromolecule surfactant, its composition and the mass percentage of various compositions are as follows:

[0029] Cationic polyacrylamide resin (Henan Gaoyuan Water Purification Material Co., Ltd.) 81.2kg

[0030] Gemini quaternary ammonium salt (China Daily Chemical Institute) 1.8kg

[0031] Polyoxyethylene copolymer resin with a molecular weight of 5 million (Sanobang) 3.5kg

[0032] Sodium Acrylamido Alkyl Sulfonate (CAS.38193-60-1) 6.3kg

[0033] Nonionic alcohol ether carboxylate (CAS 132-32-1) 3.4kg

[0034] Ammonium persulfate (CAS No.: 7727-54-0) 0.1kg

[0035] Heptahydroxy chelating agent (CAS: 134-31-6) 0.16kg

[0036] Sodium chloride 4.1kg

[0037] Wherein, the gemini quaternary ammonium salt is myristyl gemini quaternary ammonium salt, and the polyoxyethylene copolymer resin is fatty alcohol polyoxyethylene ether. Preparation method: Add 81.2kg of cationic polyacrylamide resin, 1.8kg of gemini...

Embodiment 2

[0040] A kind of anti-salt and anti-shear regulating and flooding macromolecule surfactant, its composition and the mass percentage of various compositions are as follows:

[0041] Anionic polyacrylamide resin (Henan Gaoyuan Water Purification Material Co., Ltd.) 78.2kg

[0042] Gemini quaternary ammonium salt (China Daily Chemical Institute) 1kg

[0043] Polyoxyethylene copolymer resin (Sainobang) 2.2kg

[0044] Sodium acrylamido-2-methylsulfonate (CAS.15214-89-8) 6.5kg

[0045] Oleamide (CAS:301-02-0) 3.5kg

[0046] Potassium persulfate (CAS: 7727-21-1) 0.2kg

[0047]Phenolic resin (CAS: 9003-35-4) 0.6kg

[0048] Anhydrous Potassium Carbonate 7.3kg

[0049] Wherein, the gemini quaternary ammonium salt is cetyl gemini quaternary ammonium salt, and the polyoxyethylene copolymer resin is fatty alcohol polyoxyethylene ether.

[0050] Preparation method: Add the above formula ingredients into a 500L kneading stainless steel kneader, condense and react at a constant temperat...

Embodiment 3

[0053] A kind of anti-salt and anti-shear regulating and flooding macromolecule surfactant, its composition and the mass percentage of various compositions are as follows:

[0054] Nonionic polyacrylamide resin (Henan Gaoyuan Water Purification Material Co., Ltd.) 80.5kg

[0055] Gemini quaternary ammonium salt (China Daily Chemical Institute) 1.5kg

[0056] Polyoxyethylene copolymer resin (Sainobang) 2.5kg

[0057] Sodium fatty alcohol polyoxyethylene ether sulfonate (CAS:6969-49-9) 4.6kg

[0058] Alkanolamide (CAS: 107628-04-6) 4.0kg

[0059] Sodium bisulfite (CAS:7631-90-5) 0.1kg

[0060] Resorcinol (CAS: 108-46-3) 0.3kg

[0061] Sodium chloride 7.2kg

[0062] Wherein, the gemini quaternary ammonium salt is hexadecyl gemini quaternary ammonium salt, and the polyoxyethylene copolymer resin is polyoxyethylene α-pyrrolidone PVP-35.

[0063] Preparation method: firstly add the above formula ingredients into a 500L kneading stainless steel kneader, condense and react at a ...

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 salt-resistant and shear-resistant polymer surfactant for profile control and flooding, and a preparation method thereof, wherein the surfactant comprises, by mass, 75-88 parts of a copolymerization type polyacrylamide resin, 1-6 parts of a gemini quaternary ammonium salt active agent, 2-4.5 parts of a polyoxyethylene copolymerization resin, 2-10 parts of an organic sulfonate active agent system, 2.5-4.2 parts of an anion-cation phase transfer agent, 4-8 parts of a filling agent, 0.01-0.6 part of a co-initiator and 0.1-1 part of a cross-linking agent. According to theinvention, the salt-resistant and shear-resistant polymer surfactant has characteristics of ultralow interfacial tension, good oil displacement, good salt resistance and good shear resistance, is suitable for profile control and oil displacement of oil reservoirs with different mineralization degrees and medium-high water cut stages, can substantially improve oil reservoir recovery, and further has advantages of storage stability, convenient use and the like.

Description

technical field [0001] The present invention relates to the application field of oilfield chemistry, in particular to a composition and preparation method of a polymer surfactant for anti-salt and anti-shear control and flooding. The surfactant has ultra-low surface and interfacial tension and good salt and shear resistance. It is suitable for oil reservoirs with different salinity, profile control and oil displacement in medium and high water cut period, which can greatly improve oil recovery. Background technique [0002] At present, most oilfields in China have entered the medium-high water cut period. In order to maintain stable production, the oilfields will increase the application of profile control and flooding technology. Polymer surfactants suitable for different reservoir conditions have become the focus of research at home and abroad. From 2016 to now, domestic oilfields will carry out profile control + oil displacement technology research and tests one after ano...

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): C09K8/584
CPCC09K8/584
Inventor 牛文彬岳鹏段宝虹杨中建朱秀雨
Owner BEIJING SHENGCHANG CENTURY PETROLEUM 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