A method for increasing the viscosity of sulfonated polyacrylamide solution

A technology of sulfonated polyacrylamide and sulfonated polyacrylamide, which is applied in chemical instruments and methods, drilling compositions and other directions, can solve the problems of easy flocculation and degradation of polyacrylamide, poor oil displacement effect, etc. Improve oil displacement effect, low price, improve oil displacement effect

Inactive Publication Date: 2017-07-21
NORTHEAST GASOLINEEUM UNIV
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for increasing the viscosity of sulfonated polyacrylamide solution, which is used to solve the problem that polyacrylamide is prone to Flocculation and degradation occur, and the oil displacement effect is not good

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] This method of increasing the viscosity of the sulfonated polyacrylamide solution: the concentration of the sulfonated polyacrylamide solution is 1000-3000mg / L, the temperature is 90°C, the degree of salinity is 200000mg / L, and the concentration of divalent metal ions Ca 2+ 1000pp, Mg 2+ Under the condition of 500ppmmg / L, add Ca to the sulfonated polyacrylamide solution 2+ and Mg 2+ Ionic compound complexing agent, the addition amount of the compound complexing agent is: 2g / L, the compound complexing agent is composed of triethanolamine and sodium tripolyphosphate, and the mass ratio of triethanolamine and sodium tripolyphosphate is 2:3 , adding Ca 2+ and Mg 2+ After compounding complexing agent with ions, the viscosity of sulfonated polyacrylamide solution increases by 25─95.8%.

[0016] Experiment 1: Containing Ca 2+ and Mg 2+ Experiment with simulated water:

[0017] (1) Referring to the underground conditions of the Qinghai oil reservoir, the Ca 2+ 1000pp, M...

Embodiment 2

[0023] This method of increasing the viscosity of sulfonated polyacrylamide solution: the concentration of sulfonated polyacrylamide solution is 1000-3000mg / L, the temperature is 90°C, the salinity is 150000mg / L, Ca 2+ 1400pp, Mg 2+ Adding Ca to the sulfonated polyacrylamide solution under the condition of 100ppm 2+ and Mg 2+ Ionic compound complexing agent, the addition amount of the compound complexing agent is: 4g / L; the compound complexing agent is composed of sodium gluconate and potassium oxalate, the mass ratio of sodium gluconate and potassium oxalate is 2:1, add Ca 2+ and Mg 2+ After compounding complexing agent with ions, the viscosity of sulfonated polyacrylamide solution increases by 25─95.8%.

[0024] Experiment 2: Containing Ca 2+ and Mg 2+ Experiment with simulated water:

[0025] (1) Referring to the underground conditions of the Qinghai oil reservoir, the Ca 2+ 1400pp, Mg 2+ High salinity simulated water with a salinity of 100ppm and a salinity of 150...

Embodiment 3

[0031] This method of increasing the viscosity of the sulfonated polyacrylamide solution: the concentration of the sulfonated polyacrylamide solution is 3000mg / L, the temperature is 80°C, the degree of salinity is 100000mg / L, and the concentration of divalent metal ions is 2000mg / L. , adding Ca to the sulfonated polyacrylamide solution 2+ and Mg 2+ Ion compound complexing agent, the addition amount of compound complexing agent is: 10g / L; compound complexing agent is made of HEDP . Na 4 Compounded with sodium succinate, HEDP . Na 4 The mass ratio to sodium succinate is: 0.1:10; adding Ca 2+ and Mg 2+ After the complexing agent is compounded with ions, the viscosity of the sulfonated polyacrylamide solution increases by 85%.

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
viscosityaaaaaaaaaa
viscosityaaaaaaaaaa
Login to view more

Abstract

The present invention relates to a method for increasing the viscosity of a sulfonated polyacrylamide solution. The method for increasing the viscosity of a sulfonated polyacrylamide solution: the concentration of the sulfonated polyacrylamide solution is 1000-3000mg / L, and the temperature is 80-95°C , the degree of salinity is 100000─200000mg / L, and the concentration of divalent metal ions is 500─2000mg / L. Add calcium and magnesium ion compound complexing agent to the sulfonated polyacrylamide solution to reduce Ca2+ and Mg2+ in the solution. The concentration increases the viscosity of sulfonated polyacrylamide solution by 25─95.8%. The amount of complexing agent added is 0.1─10g / L. The complexing agent is composed of organic complexing agent and inorganic complexing agent. The present invention reduces the effect of Ca2+ and Mg2+ on sulfonated polyacrylamide by adding a compound complexing agent of Ca2+ and Mg2+ ions, thereby increasing its viscosity, and more effectively realizes the improvement of sulfonated polyacrylamide without changing the oil displacement condition. Oil displacement purpose of acrylamide solution.

Description

technical field [0001] The invention relates to a polymer polyacrylamide used for oil displacement in the field of oil recovery, in particular to a method for increasing the viscosity of a sulfonated polyacrylamide solution. Background technique [0002] With the rapid development of my country's national economy, the demand for crude oil is increasing day by day. Maintaining and increasing crude oil production is of great significance to the development of my country's energy strategy. Chemical flooding is currently the most effective tertiary oil recovery method. Daqing Oilfield and Shengli Oilfield have used chemical flooding to increase crude oil production by 10 million tons and 1.7 million tons for 10 consecutive years and 5 years respectively. Therefore, my country has become the world's largest chemical flooding application Tertiary oil recovery countries. At present, the commonly used polymer for oil displacement is polyacrylamide, which improves oil recovery by cha...

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 Patents(China)
IPC IPC(8): C08J3/00C08L33/26C09K8/588
Inventor 陈彦广历娜宋华韩洪晶李锋柳艳修
Owner NORTHEAST GASOLINEEUM UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap