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Nano material as well as preparation method and application thereof

A technology of nanomaterials and polymerization reaction, applied in the field of viscous reduction of heavy oil, which can solve problems such as increased oil production costs, difficulty in finding gas sources, and migration loss of surfactants

Active Publication Date: 2021-07-30
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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  • Nano material as well as preparation method and application thereof
  • Nano material as well as preparation method and application thereof
  • Nano material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] The preparation of embodiment 1 nanometer material 1#

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

[0056] 2. Take by weighing 0.25g of initiator potassium persulfate, add 50g of deionized water, stir and dissolve, and ventilate nitrogen for 30min to get rid of 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 the potassium persulfate in 2 dropwise with a constant pressure funnel, and at the same time set the reaction temperature to 80°C, drop the initiator in 7-10 minutes, and start after the te...

Embodiment 2

[0059] The preparation of embodiment 2 nanometer material 2#

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

[0061] 2. Take by weighing 0.25g of initiator potassium persulfate, add 50g of deionized water, stir and dissolve, and ventilate nitrogen for 30min to get rid of 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 the potassium persulfate in 2 dropwise with a constant pressure funnel, and at the same time set the reaction temperature to 80°C, drop the initiator in 7-10 minutes, and start after the ...

Embodiment 3

[0064] The preparation of embodiment 3 nanometer material 3#

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

[0066] 2. Take by weighing 0.25g of initiator potassium persulfate, add 50g of deionized water, stir and dissolve, and ventilate nitrogen for 30min to get rid of 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 the potassium persulfate in 2 dropwise with a constant pressure funnel, and at the same time set the reaction temperature to 80°C, drop the initiator in 7-10 minutes, and start after the temperat...

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Abstract

The invention discloses a nano material which is prepared by carrying out polymerization reaction on a mixture containing coupled montmorillonite, an organic hydrophobic monomer, an organic hydrophilic monomer and an initiator. The nano material used in a low-permeability oil field is provided, after the nano material and a surfactant generate a synergistic effect, a gain effect is reflected, and a nano-oil displacement agent is obtained. The nano material has the advantages of good long-term stability, low interfacial tension and recovery efficiency improvement.

Description

technical field [0001] The application relates to a nanometer material and its preparation method and application, and belongs to the field of viscosity reduction of heavy oil. Background technique [0002] my country's oil demand continues to grow, and its dependence on foreign oil continues to increase. In 2019, China's foreign dependence reached 72%, which was 22% higher than the international warning, and it became the world's largest crude oil importer. At present, the global average recovery rate is 35%, and the average recovery rate in my country is 30%. Only one-third of the 10 billion tons of good quality can be recovered, and 90% of the poor quality remains 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 reserves are constant pursuits. [0003] Most of my country's developed oil fields have entered the middle and late stages of development, the ...

Claims

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Application Information

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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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