Hydrophobic monomer, high molecular polymer, and preparation methods and application thereof

A technology of high molecular polymer and hydrophobic monomer, which is applied in the preparation of organic compounds, the preparation of carbamic acid derivatives, the composition of drilling holes, etc. Limiting the popularization and application of solid-free drilling fluids

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

The problem of poor temperature resistance of polymers greatly limits the popularization and application of solid-free drilling fluids
Although a kind of N-methyl-2-pyrrolidone has been studied abroad as the main solvent (accounting for 90%), adding a small amount of water (dissolving the s...

Method used

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  • Hydrophobic monomer, high molecular polymer, and preparation methods and application thereof
  • Hydrophobic monomer, high molecular polymer, and preparation methods and application thereof
  • Hydrophobic monomer, high molecular polymer, and preparation methods and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Add 500 mL of acetonitrile and 22.23 g of 9-(2-hydroxyethyl)anthracene into a dry three-neck flask equipped with a stirrer, condenser and dropping funnel, and stir until 9-(2-hydroxyethyl)anthracene is fully dissolved. The water bath was heated to a temperature of 65°C, and vacuum was applied for 2 hours to remove moisture. Under nitrogen protection, 0.0221 g of dibutyltin dilaurate was added. 22.14 g of 3-isopropyl-dimethylbenzyl isocyanate in the dropping funnel was dropped into a three-necked flask, reacted for 7.5 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 methanol three times, and placed in an oven at 65° C. until constant weight to obtain the target product.

Embodiment 2

[0055] Add 42.64g of acrylamide, 9.41g of sodium acrylate, 20.62g of sodium p-styrenesulfonate and 700mL of distilled water into the reactor in sequence, and stir until the monomers are dissolved. In reactor, add 24.0g sodium dodecylbenzene sulfonate, add the hydrophobic monomer that 3.88g embodiment 1 prepares after stirring, stir at high speed, make hydrophobic monomer solubilization in sodium dodecylbenzenesulfonate in micelles. Nitrogen was introduced for 30 minutes to eliminate dissolved oxygen in the reaction system and provide an oxygen-free reaction atmosphere. The water bath was warmed up to a predetermined temperature of 45°C, and 0.8g (NH 4 ) 2 S 2 o 8 , and reacted for 12 hours under continuous stirring conditions to obtain a colorless and transparent gum-like crude product. The crude product was purified by precipitation with absolute ethanol, and dried in a vacuum oven at 25° C. to a constant weight to obtain a high molecular weight polymer.

Embodiment 3

[0057] Add 90.53g of N-isopropylacrylamide, 21.62g of sodium methacrylate, 82.47g of sodium p-styrenesulfonate and 786.08mL of distilled water into the reactor in sequence, and stir until the monomers are dissolved. Add 30.5g sodium octadecylsulfonate to the reactor, add 2.97g hydrophobic monomer prepared in Example 1 after stirring evenly, stir at a high speed, so that the hydrophobic monomer is solubilized in the micelles of sodium octadecylsulfonate middle. Nitrogen was introduced for 30 minutes to eliminate dissolved oxygen in the reaction system and provide an oxygen-free reaction atmosphere. The water bath was warmed up to a predetermined temperature of 55°C, and 2.0 g (NH 4 ) 2 S 2 o 8 , and reacted for 8 hours under continuous stirring conditions to obtain a colorless and transparent gum-like crude product. The crude product was purified by precipitation with absolute ethanol, and dried in a vacuum oven at 35° C. to a constant weight to obtain a high molecular wei...

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Abstract

The invention provides a hydrophobic monomer shown in a formula 1 and a preparation method thereof. The invention further provides a high molecular polymer and a preparation method thereof. Besides, the invention also provides the application of the high molecular polymer to drilling fluid. The high molecular polymer provided by the invention is suitable for water-based solid-free drilling fluid, and as a tackifier, the high molecular polymer has the advantages of good heat-resisting property and suspension stability.

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] As an important pillar energy, petroleum plays a pivotal role in national security, economic development and social life. At present, my country's reserve oil reserves are quite tight. Among the proven undeveloped geological reserves, most of them are medium and low permeability oil reserves in high-temperature deep formations, which are difficult to exploit. Theoretical research and production practice have shown that for the development of oil resources in medium and low permeability reservoirs, in the drilling fluid system used in drilling construction, the artificially added submicron solid particles can easily block the pores of the reservoir, increasing the crude oil in the reservoir. Flow resistance in the reservoir, causing reservoi...

Claims

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Application Information

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IPC IPC(8): C07C271/12C07C269/02C08F220/56C08F220/06C08F212/14C08F212/32C08F220/54C09K8/035
CPCC07C269/02C07C271/12C08F220/54C08F220/56C09K8/035C08F220/06C08F212/14C08F212/32
Inventor 褚奇李胜赵素丽杨帆张凤英钱晓琳李雄李涛
Owner CHINA PETROLEUM & CHEM CORP
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