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A kind of nanomaterial, preparation method and application thereof

A technology of nanomaterials and polymerization reaction, which is applied in the field of viscosity reduction of heavy oil, can solve the problems of surfactant migration loss, poor control of manufacturing cracks, and difficulty in finding gas sources, etc., to achieve reduced adsorption, good nano-gain effect, and improved The effect of interface activity

Active Publication Date: 2022-07-29
NINGBO FENGCHENG ADVANCED ENERGY MATERIALS RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, each of these technologies has its own advantages and disadvantages, such as increased oil production costs, high formation adaptability, reduced oil layer productivity, poor control of fractures, high environmental requirements, and difficulty in finding gas sources. Surfactant flooding also has a certain degree of economy. Cost and Surfactant Migration Loss Issues in Reservoir Geologic Pores

Method used

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  • A kind of nanomaterial, preparation method and application thereof
  • A kind of nanomaterial, preparation method and application thereof
  • A kind of nanomaterial, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Example 1 Preparation of Nanomaterial 1#

[0055] 1. Weigh 15g of monomer AOS (sodium α-olefin sulfonate) and 15g of monomer acrylamide, 20g of monomer maleic anhydride organic hydrophilic monomer, 10g of coupled montmorillonite into a three-necked flask, add 900g deionized water, stir to dissolve, pass nitrogen for 30min, and remove the oxygen in the solution;

[0056] 2. Weigh the initiator potassium persulfate of 0.25g, add 50g deionized water, stir and dissolve, pass nitrogen for 30min, and remove the oxygen in the solution (initiator concentration 0.5wt%);

[0057] 3. Mechanically stir the solution in 1 at 250rpm, start heating, and set the heating temperature to 55°C;

[0058] 4. When the temperature of the solution in the flask reaches 45°C, add potassium persulfate in 2 dropwise with a constant pressure funnel, while setting the reaction temperature to 80°C, drop the initiator in 7-10min, and wait for the temperature of the reaction solution to reach 80°C. Timin...

Embodiment 2

[0059] Example 2 Preparation of Nanomaterial 2#

[0060] 1. Weigh 15g monomer AOS (α-alkene sulfonate sodium) and 15g monomer acrylamide, 20g monomer maleic anhydride organic hydrophilic monomer, 20g coupled montmorillonite into there-necked flask, add 900g deionized water, stir to dissolve, pass nitrogen for 30min, and remove the oxygen in the solution;

[0061] 2. Weigh the initiator potassium persulfate of 0.25g, add 50g deionized water, stir and dissolve, pass nitrogen for 30min, and remove the oxygen in the solution (initiator concentration 0.5wt%);

[0062] 3. Mechanically stir the solution in 1 at 250rpm, start heating, and set the heating temperature to 55°C;

[0063] 4. When the temperature of the solution in the flask reaches 45°C, add potassium persulfate in 2 dropwise with a constant pressure funnel, while setting the reaction temperature to 80°C, drop the initiator in 7-10min, and wait for the temperature of the reaction solution to reach 80°C. Timing, the react...

Embodiment 3

[0064] Example 3 Preparation of Nanomaterial 3#

[0065] 1. Weigh 15g of monomer AOS (sodium α-olefin sulfonate) and 15g of monomer acrylamide, 20g of monomer maleic anhydride organic hydrophilic monomer, 30g of coupled montmorillonite into there-necked flask, add 900g deionized water, stir to dissolve, pass nitrogen for 30min, and remove the oxygen in the solution;

[0066] 2. Weigh the initiator potassium persulfate of 0.25g, add 50g deionized water, stir and dissolve, pass nitrogen for 30min, and remove the oxygen in the solution (initiator concentration 0.5wt%);

[0067] 3. Mechanically stir the solution in 1 at 250rpm, start heating, and set the heating temperature to 55°C;

[0068] 4. When the temperature of the solution in the flask reaches 45°C, add potassium persulfate in 2 dropwise with a constant pressure funnel, while setting the reaction temperature to 80°C, drop the initiator in 7-10min, and wait for the temperature of the reaction solution to reach 80°C. Timin...

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Abstract

The present application discloses a nanomaterial, which is prepared by polymerizing a mixture containing coupled montmorillonite, organic hydrophobic monomer, organic hydrophilic monomer and initiator. The present application proposes a nanomaterial used in low-permeability oil fields. After synergistic action with the surfactant, a gain effect is exhibited, and a nano-oil displacement agent is obtained. Nanomaterials have good long-term stability, low interfacial tension and enhanced oil recovery.

Description

technical field [0001] The application relates to a nanomaterial, a preparation method and application thereof, and belongs to the field of viscosity reduction of heavy oil. Background technique [0002] my country's oil demand continues to grow, and its foreign dependence on oil continues to rise. In 2019, China's foreign dependence reached 72%, 22% ahead of the international warning, making it the world's largest crude oil importer. At present, the global average recovery rate is 35%, and my country's average is 30%. Only 1 / 3 of the 10 billion tons of good quality can be recovered, and 90% of the poor quality are left in the ground. The world oil price is constantly changing, but the low-cost and high-efficiency exploitation of oil and gas production and the continuous improvement of exploitation reserves are the constant pursuits. [0003] Most of the oil fields that have been developed in my country have entered the middle and late stages of development, and the contrad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F292/00C08F228/02C08F220/56C08F222/06C09K8/588C09K8/88
CPCC08F292/00C09K8/588C09K8/882C09K2208/10C08F228/02C08F220/56C08F222/06
Inventor 邓青春刘艳华吴向阳方叶青史建民王耀国
Owner NINGBO FENGCHENG ADVANCED ENERGY MATERIALS RES INST CO LTD
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