A kind of hydrophobic association polymer and synthesis process

A hydrophobic association, polymer technology, applied in drilling compositions, chemical instruments and methods, etc., can solve the problems of inability to meet the requirements of tertiary oil recovery, poor temperature and salt resistance and shear resistance, and achieve the degree of hydrolysis. Controllable and adjustable, stable product quality, low energy consumption

Active Publication Date: 2021-02-09
江西富诚生态环境科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] CN201310435118.2 "Amphoteric Hydrophobic Association Polymer and Its Preparation Method", which mainly solves the problems existing in the prior art that the polymer has poor heat resistance, salt resistance and shear resistance, and cannot meet the requirements of tertiary oil recovery

Method used

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  • A kind of hydrophobic association polymer and synthesis process
  • A kind of hydrophobic association polymer and synthesis process
  • A kind of hydrophobic association polymer and synthesis process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Hydrophobic association polymer ratio

[0029]

[0030] The synthesis process is as follows:

[0031] 1. Add pure water to the reactor.

[0032] 2. Turn on the stirring motor of the reactor and adjust the speed to 18r / min.

[0033] 3. Add EDTA. Stirring time 5 minutes.

[0034] 4. Slowly add baking soda and stir for 30 minutes until the material liquid becomes clear.

[0035] 5. Adjust the speed to 8r / min.

[0036] 6. Add acrylic acid, add slowly, and the feeding time is 30 minutes to prevent a large number of bubbles in the reaction kettle.

[0037] 7. After the bubbles in the reactor disappear, adjust the speed to 15r / min.

[0038] 8. Add KCl and stir for 10 minutes.

[0039] 9. Open the valve of the circulation system, open the filter, start the circulation pump, and circulate for 10 minutes after confirming that the circulation is smooth.

[0040] 10. Use a thermometer to measure the temperature of the feed liquid. If it exceeds 20°C, stop the cycle imme...

Embodiment 2

[0055] Hydrophobic association polymer ratio

[0056]

[0057] The synthesis process is as follows:

[0058] 1. Add pure water to the reactor.

[0059] 2. Turn on the stirring motor of the reactor and adjust the speed to 18r / min.

[0060] 3. Add EDTA. Stirring time 5 minutes.

[0061] 4. Slowly add baking soda and stir for 30 minutes until the material liquid becomes clear.

[0062] 5. Adjust the speed to 8r / min.

[0063] 6. Add acrylic acid, add slowly, and the feeding time is 30 minutes to prevent a large number of bubbles in the reaction kettle.

[0064] 7. After the bubbles in the reactor disappear, adjust the speed to 15r / min.

[0065] 8. Add KCl and stir for 10 minutes.

[0066] 9. Open the valve of the circulation system, open the filter, start the circulation pump, and circulate for 10 minutes after confirming that the circulation is smooth.

[0067] 10. Use a thermometer to measure the temperature of the feed liquid. If it exceeds 20°C, stop the cycle imme...

Embodiment 3

[0082] Hydrophobic association polymer ratio

[0083]

[0084] The synthesis process is as follows:

[0085] 1. Add pure water to the reactor.

[0086] 2. Turn on the stirring motor of the reactor and adjust the speed to 18r / min.

[0087] 3. Add EDTA. Stirring time 5 minutes.

[0088] 4. Slowly add baking soda and stir for 30 minutes until the material liquid becomes clear.

[0089] 5. Adjust the speed to 8r / min.

[0090] 6. Add acrylic acid, add slowly, and the feeding time is 30 minutes to prevent a large number of bubbles in the reaction kettle.

[0091] 7. After the bubbles in the reactor disappear, adjust the speed to 15r / min.

[0092] 8. Add KCl and stir for 10 minutes.

[0093] 9. Open the valve of the circulation system, open the filter, start the circulation pump, and circulate for 10 minutes after confirming that the circulation is smooth.

[0094] 10. Use a thermometer to measure the temperature of the feed liquid. If it exceeds 20°C, stop the cycle imme...

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Abstract

The invention discloses a hydrophobic association polymer and a synthesis process, which is characterized in that the parts by weight of each raw material are: 320-360 parts of pure water, 0.25-0.75 parts of disodium ethylenediamine tetraacetate (Edta-2Na), baking soda 25-35 parts, 18-22 parts of acrylic acid, 12-18 parts of potassium chloride, 95-105 parts of acrylamide, 15-20 parts of urea, 25-30 parts of monomer, among which, Edta-2Na sand-carrying property 2±0.1 h settlement is less than 20%, dry powder 0.25% viscosity 21‑27. Compared with the above-mentioned prior art, the invention has simple operation, low production cost, stable product quality and extremely low impact on environmental pollution. At the same time, the invention has the advantages of wide source of raw materials, simple production operation, low cost, and little impact on the environment; stable product quality, good solubility, temperature and salt resistance, shear resistance, high viscosity, etc., and can be applied to medium and low temperature oil and gas reservoir fracturing Construction and EOR.

Description

technical field [0001] The invention belongs to the technical field of hydrophobic association of oilfield chemicals, and in particular relates to a hydrophobic association polymer and a synthesis process. Background technique [0002] Hydrophobic association polymer (HAWP) refers to a water-soluble polymer with a small amount of hydrophobic groups on the hydrophilic macromolecular chain of the polymer. Its solution has unique properties. In aqueous solution, the hydrophobic groups of such polymers are aggregated due to hydrophobic interaction, causing intramolecular and intermolecular associations of macromolecular chains. When the polymer concentration is higher than a certain critical concentration (CAC), the macromolecular chains aggregate through hydrophobic associations to form a supramolecular structure dominated by intermolecular associations—dynamic physical crosslinking network, the hydrodynamic volume increases, and the solution Viscosity increased significantly,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/56C08F220/06C08F226/02C09K8/68C09K8/588C09K8/88
CPCC08F220/56C09K8/588C09K8/68C09K8/882C08F220/06C08F226/02
Inventor 张学文张学武宋劲马建国
Owner 江西富诚生态环境科技集团有限公司
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