Hydrophobic monomers and high-molecular polymers, and preparation method of hydrophobic monomers, preparation method of high-molecular polymers and application of high-molecular polymers

A technology of high molecular polymers and hydrophobic monomers, which is used in the preparation of organic compounds, the preparation of carbamate derivatives, the composition of drilling holes, etc.

Active Publication Date: 2017-10-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, most oilfields in my country are in the mid-to-late stage of development, and the undeveloped geological reserves are mostly concentrated in low-permeability, high-temperature formations. This puts forward higher requirements for solid-free drilling fluids with good reservoir protection performance, and then urgently needs Research and develop polymers with better temperature resistance and suspension stability to meet the needs of oil and gas exploration and development with increasingly harsh geological conditions

Method used

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  • Hydrophobic monomers and high-molecular polymers, and preparation method of hydrophobic monomers, preparation method of high-molecular polymers and application of high-molecular polymers
  • Hydrophobic monomers and high-molecular polymers, and preparation method of hydrophobic monomers, preparation method of high-molecular polymers and application of high-molecular polymers
  • Hydrophobic monomers and high-molecular polymers, and preparation method of hydrophobic monomers, preparation method of high-molecular polymers and application of high-molecular polymers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The synthesis of embodiment 1 hydrophobic monomer

[0048] The synthetic route is as follows:

[0049]

[0050] Add 350 mL of acetone and 45.42 g of 4-tridecafluorooctylbenzyl alcohol into a dry three-neck flask equipped with a stirrer, condenser and dropping funnel, and stir until the 4-tridecafluorooctylbenzyl alcohol is fully dissolved. The water bath was heated to a temperature of 50°C, and vacuum was applied for 2.5 hours to remove moisture. Under nitrogen protection, 0.0225 g of dibutyltin dilaurate was added. 22.54 g of 3-isopropyl-dimethylbenzyl isocyanate in the dropping funnel was dropped into a three-necked flask, reacted for 12 hours, and distilled under reduced pressure to remove acetone, and the crude product of the target molecule was obtained. The crude product was rinsed with chloroform three times, and placed in an oven at 65° C. until constant weight to obtain the target product with a yield of 79%.

Embodiment 2

[0052] With 42.64 acrylamide, 18.80g sodium acrylate, 11.11g N-vinylpyrrolidone, 45.85g 2-acrylamide-2-sodium methylpropanesulfonate, 3.61g hydrophobic monomer prepared in Example 1, 38.32g octadecane Sodium sulfonate and 1100 mL of distilled water were placed in a reactor, and stirred evenly until the water-soluble monomer was completely dissolved, and the hydrophobic monomer was solubilized in the micelles of sodium octadecylsulfonate to obtain a pre-reaction system. Nitrogen is continuously passed into the reaction system to eliminate oxygen in the reaction system and provide an oxygen-free reaction environment. Add 0.04g 2-hydroxy-4'-(2-hydroxyethoxy)-2-methylpropiophenone and 1.5g disodium edetate, control the temperature of the water bath to 20°C-30°C, and keep stirring Put it in a 100W high-pressure mercury lamp with the main wave of ultraviolet light at 365nm, polymerize for 3.0 hours, and let it stand for aging for 2 hours to obtain a crude colloidal product. The cru...

Embodiment 3

[0054] 59.47gN, N-dimethylacrylamide, 9.41g sodium acrylate, 5.56gN-vinylpyrrolidone, 51.55g p-styrene sodium sulfonate, 13.1g hydrophobic monomer prepared in Example 1, 52.15g dodecyl Sodium sulfonate and 678.06 mL of distilled water were placed in the reactor, and stirred evenly until the water-soluble monomer was completely dissolved, and the hydrophobic monomer was solubilized in the micelles of sodium dodecylsulfonate to obtain a pre-reaction system. Nitrogen is continuously passed into the reaction system to eliminate oxygen in the reaction system and provide an oxygen-free reaction environment. Add 0.0556g of 2-hydroxy-2-methyl-1-phenylacetone and 0.88g of disodium ethylenediaminetetraacetate, control the temperature of the water bath to 20°C-30°C, and place it at 200W under continuous stirring conditions, and the main wave of ultraviolet light Polymerize under a high-pressure mercury lamp of 365 nm for 2 hours, and leave to mature for 2 hours to obtain a crude colloida...

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Abstract

The invention provides hydrophobic monomers as a formula I and a preparation method thereof. The invention also provides high-molecular polymers, and a preparation method and application thereof. The high-molecular polymers provided by the invention have the advantages of short synthesis time, non-strict reaction temperature requirements, simple production technique and lower production cost, and are convenient for industrial production. The high-molecular polymers provided by the invention have higher heat stability and suspension stability when being used as a tackifier for drilling fluids.

Description

technical field [0001] The invention belongs to the field of oilfield additives, and in particular relates to a hydrophobic monomer, a high molecular polymer and a preparation method and application thereof. Background technique [0002] During the drilling process, the drilling fluid is the first working fluid that opens up the oil and gas layers. With the opening of the oil and gas layer, the original environmental state of the formation has changed, and the solid phase particles in the drilling fluid will enter the oil and gas layer together with the liquid phase, blocking the rock fractures or channels adjacent to the wellbore, and reducing the permeability of the rock , increasing the resistance of oil and gas migration to the wellbore, causing reservoir damage. Especially in the development of low-permeability oil and gas resources with high resistance to oil and gas migration, the protection of oil and gas layers is more important. Once the oil and gas formations ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C271/12C07C269/02C09K8/44C08F220/58C08F220/06C08F226/10C08F220/56C08F212/14
CPCC07C269/02C07C271/12C08F220/56C08F220/58C08F220/585C09K8/426C09K8/44C08F220/06C08F226/10C08F212/14
Inventor 褚奇
Owner CHINA PETROLEUM & CHEM CORP
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