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

Thickened oil viscosity reduction oil washing agent for synergistic polymer flooding as well as preparation method and application of thickened oil viscosity reduction oil washing agent

A viscous detergent and polymer technology, which is applied in the field of synergistic polymer flooding heavy oil viscosity-reducing detergent and its preparation, can solve the problems of unresolved polymer compounding and improve heavy oil recovery High efficiency, simple preparation process and low cost

Active Publication Date: 2022-07-22
SHANDONG XINGANG CHEM
View PDF11 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] CN110684519A discloses a heavy oil viscosity-reducing oil-displacing agent resistant to stratum adsorption. This patent has good emulsification effect and viscosity-reducing effect on heavy oil, and has relatively strong adsorption resistance. efficiency does not involve
CN113061425A discloses a low-tension heavy oil viscosity-reducing oil washing agent for heavy oil cooling. This patent has a good effect on interfacial tension, and the oil washing efficiency has also been greatly improved, but the compounding property with polymers is not involved.

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
  • Thickened oil viscosity reduction oil washing agent for synergistic polymer flooding as well as preparation method and application of thickened oil viscosity reduction oil washing agent
  • Thickened oil viscosity reduction oil washing agent for synergistic polymer flooding as well as preparation method and application of thickened oil viscosity reduction oil washing agent
  • Thickened oil viscosity reduction oil washing agent for synergistic polymer flooding as well as preparation method and application of thickened oil viscosity reduction oil washing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In the reaction vessel, successively add sodium lauryl isethionate 35g, ɑ-iminoacetic acid 30g (R 1 =8, R 2 = 8), 20 g of fatty alcohol polyoxyethylene ether glucoside (n = 10, R = 12), 10 g of ethanol and 5 g of water, and stirred evenly at 50° C. to obtain a heavy oil viscosity-reducing oil wash for synergistic polymer flooding .

Embodiment 2

[0030] In the reaction vessel, successively add sodium cocoyl isethionate 35g, ɑ-iminoacetic acid 20g (R 1 =10, R 2 =8), 10 g of fatty alcohol polyoxyethylene ether glucoside (n = 12, R = 13), 15 g of methanol and 20 g of water, and stirred uniformly at 50° C. to obtain a heavy oil viscous-reducing and washing oil for polymer flooding.

Embodiment 3

[0032] In the reaction vessel, successively add sodium dodecylbenzenesulfonate 25g, ɑ-iminoacetic acid 30g (R 1 =12, R 2 =8), 10 g of fatty alcohol polyoxyethylene ether glucoside (n = 13, R = 14), 10 g of isopropanol and 25 g of water, and stirred evenly at 50° C. to obtain a heavy oil for polymer flooding, viscosity-reducing and washing oil .

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
viscosityaaaaaaaaaa
interfacial tensionaaaaaaaaaa
interfacial tensionaaaaaaaaaa
Login to View More

Abstract

The invention provides a thickened oil viscosity-reducing oil washing agent for synergistic polymer flooding as well as a preparation method and application thereof, and belongs to the technical field of oil exploitation. The thickened oil viscosity-reducing oil washing agent for synergistic polymer flooding provided by the invention comprises the following components in percentage by mass: 25%-35% of an anionic surfactant, 10%-20% of a zwitterionic surfactant, 10%-20% of a nonionic surfactant, 10%-20% of low-carbon alcohol and the balance of water. When the viscosity-reducing oil washing agent provided by the invention is applied to the recovery of heavy oil with the formation temperature of 70 DEG C and the crude oil viscosity of 1314 mPa.s, the interfacial tension is less than or equal to 8.9 * 10 <-2 >, the viscosity reduction rate is greater than or equal to 81.7%, the oil washing efficiency is greater than or equal to 42.1%, the polymer viscosity retention rate is greater than or equal to 97.4%, the effect is remarkable, and the preparation process is simple, low in cost and green and environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of petroleum exploitation, and in particular relates to a viscosity-reducing oil cleaning agent for high-efficiency polymer flooding for heavy oil and a preparation method and application thereof. Background technique [0002] With the development of conventional crude oil, its underground reserves have declined significantly, and the heavy oil resources with huge reserves will occupy an increasing proportion in the future oil exploitation, while the residual oil of heavy oil after conventional water flooding is relatively large. Explore these heavy oil resources The mining method has become an important issue in the future. [0003] Both polymer flooding and emulsification viscosity reduction flooding technology have broad application prospects in enhancing the recovery of heavy oil. The polymer is injected into the crude oil reservoir. Due to the low mobility of the injected water, the permeability of the...

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): C09K8/584C09K8/60E21B43/22
CPCC09K8/584C09K8/604C09K8/602E21B43/16
Inventor 祝东明姜力华秦玉斌齐高政丁锡刚吴庆凯李金平胡朋朋
Owner SHANDONG XINGANG CHEM
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