Preparation method and application of novel polymeric surfactant

A surfactant and polymer technology, applied in the field of preparation of new polymer surfactants, can solve problems such as poor migration speed, chromatographic separation, and weakened synergistic effect of oil displacement agents, and achieve good oil washing ability and wide application Prospect, effect of reversible aggregation capacity

Active Publication Date: 2013-11-27
华鼎鸿基采油技术服务(北京)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, laboratory studies have shown that during the compound flooding process, due to the difference in migration speed between different components, chromatographic separation will occur, resulting in weakened synergy between different oil displacement agents and poor oil displacement effect.
And the alkali will seriously damage the formation, causing equipment fouling, corrosion and other disadvantages

Method used

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  • Preparation method and application of novel polymeric surfactant
  • Preparation method and application of novel polymeric surfactant
  • Preparation method and application of novel polymeric surfactant

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preparation example Construction

[0041] The invention discloses a preparation method of an active monomer, comprising the following steps:

[0042] Maleic anhydride and C8~C20 fatty alcohol undergo esterification reaction to obtain the first intermediate product;

[0043] reacting the first intermediate product with an allyl haloalkene to obtain a second intermediate product;

[0044] The second intermediate product is reacted with sodium bisulfite to obtain the active monomer represented by formula (I).

[0045] In the present invention, the concrete synthetic route of preparing active monomer is as follows:

[0046]

[0047] Firstly, maleic anhydride and C8-C20 fatty alcohol undergo esterification reaction to obtain the first intermediate product. The C8-C20 fatty alcohol is preferably n-octanol, n-dodecyl alcohol, n-tetradecyl alcohol or n-hexadecanol. The mass ratio of the maleic anhydride to the fatty alcohol is preferably 1:1. The temperature of the reaction is preferably 80-100° C., and the time...

Embodiment 1

[0076] Add 20g of maleic anhydride, 20g of n-octanol, and 0.2g of anhydrous sodium acetate into a four-necked flask in sequence, stir and heat up to 90°C within 10 minutes, and react for 3 hours to obtain the first intermediate product;

[0077] Add the first intermediate product, anhydrous sodium carbonate, into a four-necked flask in turn, react at 75°C for 25min, then add triethylamine, cool down to 55°C, and dropwise add 50 parts of chloropropene and 50 parts of A mixed solution of acetone was prepared, and the temperature of the water bath was kept at 54°C, and the mixture was stirred and refluxed for 6 hours. The reaction mixture was filtered to remove solid impurities, and the filtrate was rotary evaporated to remove excess chloropropene and solvent acetone, then washed with water three times, separated, and the upper oily liquid was added to anhydrous CaCl 2 Dry, let stand overnight, filter to remove CaCl 2 , to obtain the second intermediate product;

[0078] Add th...

Embodiment 2

[0082] Add 20g of maleic anhydride, 20g of n-dodecyl alcohol, and 0.2g of anhydrous sodium acetate into a four-neck flask in sequence, stir and heat up to 90°C within 10 minutes, and react for 3 hours to obtain the first intermediate product;

[0083] Add the first intermediate product, anhydrous sodium carbonate, into the four-necked flask in turn, react at 78°C for 27min, then add triethylamine, cool down to 55°C, add 50 parts of chloropropene and 50 parts of A mixed solution of acetone was kept at a water bath temperature of 60°C, and the mixture was stirred and refluxed for 5.5 hours. The reaction mixture was filtered to remove solid impurities, and the filtrate was rotary evaporated to remove excess chloropropene and solvent acetone, then washed with water three times, separated, and the upper oily liquid was added to anhydrous CaCl 2 Dry, let stand overnight, filter to remove CaCl 2 , to obtain the second intermediate product;

[0084] Add the second intermediate produ...

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Abstract

The invention provides an active monomer shown in a formula (I). The invention further provides a polymeric surfactant shown in formula (II). The preparation method comprises the following step of: performing a chain transfer reaction on 1-40 parts by weight of acrylamide, 1-20 parts by weight of anion monomers with double bonds, 1-30 parts by weight of the active monomer according to the claim 1, 50-100 parts by weight of deionized water and 0.001-2 parts by weight of chain transfer agent under the effect of an initiator. The polymeric surfactant has the double performances of the polymer and the surfactant, has good oil scrubbing capacity, can be used for improving the recovery efficiency of petroleum, and has wide application prospect in thickened oil recovery. In addition, the polymeric surfactant further has solubilizing power, reversible gathering capacity, salt resistance, temperature resistance, and resistance to mechanical, biological and oxydative degradation.

Description

technical field [0001] The invention relates to the field of chemical oil displacement agents, in particular to a preparation method and application of a novel polymer surfactant. Background technique [0002] Petroleum is one of the most important energy materials in the contemporary world. Especially in China, where the automobile industry is developing rapidly, the demand for petroleum is growing rapidly, and the dependence on foreign countries for petroleum has exceeded half. Oil recovery from oil reservoirs is generally divided into three stages: primary oil recovery, relying on the natural energy of the bottom layer to produce oil, and the recovery rate is below 30%; secondary oil recovery, using water injection and gas injection technology to supplement oil energy to produce oil, recovery rate It can reach 40% to 50%; tertiary oil recovery, that is, enhanced oil recovery, can increase the recovery rate to 80% to 85%. [0003] At present, my country's Daqing, Shengli,...

Claims

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Application Information

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IPC IPC(8): C07C303/32C07C309/17C09K8/584C08F220/56C08F220/06C08F218/16C08F2/38
Inventor 付秀峰卢琼王江红李伦
Owner 华鼎鸿基采油技术服务(北京)有限公司
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