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A kind of hydrophobic association polymer with multiple ring structure side chains, its preparation method and its application

A hydrophobic association and polymer technology, which is applied in the preparation of hydrophobic association polymers in the field of oil displacement agents and hydrophobic association polymers, can solve the problems of pipeline corrosion damage, poor polymer performance, poor temperature resistance, etc. The effect of improving spatial structure and rigidity, increasing temperature and salt resistance, and increasing hydrodynamic volume

Active Publication Date: 2018-11-23
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 2001, Kujawa et al. (KujawaP., Rosiak J.K., Selb J., Candau F., Micellar synthesis and properties ofhydrophobically associating polyampholytes, Macromol.Chem.Phys.2001,202(8):1384-1397) respectively body and anion, cation into the acrylamide polymer, but the post-processing is complicated and causes environmental pollution
[0005] As the amount of oil is increasing year by year, how to increase the recovery rate of oil has become an increasingly serious problem. Polymer flooding has also become the mainstream way to increase oil production. Cost; the synthetic polymer has poor performance and cannot meet the application requirements in oilfield exploitation, such as poor temperature resistance and susceptibility to salt ions, which limit its scope of use
In fact, the most serious problem is that there are a large number of sulfate-reducing bacteria and saprophytic bacteria underground, which will reduce the oil production rate and cause pipeline corrosion and damage during underground transportation and extraction of oil.

Method used

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  • A kind of hydrophobic association polymer with multiple ring structure side chains, its preparation method and its application
  • A kind of hydrophobic association polymer with multiple ring structure side chains, its preparation method and its application
  • A kind of hydrophobic association polymer with multiple ring structure side chains, its preparation method and its application

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0105] Preparation Example 1: Preparation of Hydrophobic Association Polymer of the present invention

[0106] The implementation steps of this embodiment are as follows:

[0107] A. Preparation of monomer mixture solution

[0108] Acrylamide, N-acryloylmorpholine, 2-acrylamide-2-methylpropanesulfonic acid, isobornyl methacrylate, pinanyl acrylate and N-(2-hydroxy-3-acrylamidomethyl-4, 5-Dimethylbenzyl) acrylamide containing capsaicin functional structure acrylamide, according to the weight ratio 74:5:12:1.5:1.5, is dissolved in the ethanol aqueous solution that concentration is 15% by volume, then with concentration is 0.1mol The aqueous NaOH solution of / L adjusts the pH value of the resulting solution to 8, to obtain a monomer mixture solution with a total monomer content of 10% by weight;

[0109] B. Synthesis of Hydrophobically Associating Polymers

[0110] Accurately measure the monomer mixture solution obtained in the above step A of one-fifth by volume, add 10% stea...

preparation Embodiment 2

[0113] Preparation Example 2: Preparation of Hydrophobic Association Polymer of the present invention

[0114] The implementation steps of this embodiment are as follows:

[0115] A. Preparation of monomer mixture solution

[0116] Acrylamide, N-acryloylmorpholine, 2-acrylamide-2-methylpropanesulfonic acid, isobornyl methacrylate, pinanyl acrylate and N-(2-hydroxy-3-acrylamidomethyl-4, 6-dimethylbenzyl) acrylamide containing capsaicin functional structure acrylamide, according to weight ratio 60: 3: 14: 5.0: 0.3, be dissolved in the ethanol aqueous solution that concentration is 1% by volume, then use concentration as 5.0mol The aqueous NaOH solution of / L adjusts the pH value of the resulting solution to 6, to obtain a monomer mixture solution with a total monomer content of 5% by weight;

[0117] B. Synthesis of Hydrophobically Associating Polymers

[0118]Accurately measure one-fifth of the monomer mixture solution obtained in the above step A by volume, add 1% sodium la...

preparation Embodiment 3

[0121] Preparation Example 3: Preparation of Hydrophobic Association Polymer of the present invention

[0122] The implementation steps of this embodiment are as follows:

[0123] A. Preparation of monomer mixture solution

[0124] Acrylamide, N-acryloylmorpholine, 2-acrylamide-2-methylpropanesulfonic acid, isobornyl acrylate, pinanyl acrylate and N-(3,4-dihydroxy-6-acrylamidomethylbenzyl ) acrylamide containing capsaicin functional structure acrylamide, according to the weight ratio of 85:6:8:2.8:2.0 dissolved in the ethanol solution with a concentration of 20% by volume, and then the NaOH solution with a concentration of 1.8mol / L The pH value of the obtained solution was adjusted to 9 to obtain a monomer mixture solution with a total monomer content of 16% by weight;

[0125] B. Synthesis of Hydrophobically Associating Polymers

[0126] Accurately measure one-fifth of the monomer mixture solution obtained in the above step A by volume, add 4% sodium dodecylbenzenesulfonat...

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Abstract

The invention relates to a hydrophobic association polymer with various loop-structure side chains and a preparation method and application thereof. The method comprises the steps such as preparing a monomer mixture solution, and synthesizing and purifying a hydrophobic association polymer; the hydrophobic association polymer of the invention has microbial degradation preventive performance and corrosion inhibiting performance, is temperature-tolerant and salt-tolerant and is also environment-friendly. Therefore, the hydrophobic association polymer has a promising application prospect in intensive oil exploitation.

Description

【Technical field】 [0001] The invention belongs to the technical field of functional polymers. More specifically, the present invention relates to a kind of hydrophobic association polymer with multiple ring structure side chains, also relates to the preparation method of said hydrophobic association polymer, also relates to said hydrophobic association polymer in oil displacement agent the use of. 【Background technique】 [0002] The oil industry is the blood of economic development. With the development and progress of the times, the use of oil by humans is increasing year by year. As a non-renewable resource, few large oil fields and new reserves have been discovered in recent years. The inability to provide sufficient oil reserves to meet the increasing demand for crude oil consumption has led to increasingly prominent contradictions between oil supply and demand. Therefore, under the circumstances that the number of new oil fields is decreasing and crude oil production ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/56C08F220/58C08F222/38C08F220/18C09K8/588
CPCC08F220/56C09K8/588C09K8/882C08F220/58C08F220/585C08F222/385C08F220/18
Inventor 于良民吴刚闫雪峰李学玲李昌诚姜晓辉李霞董磊
Owner OCEAN UNIV OF CHINA
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