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Alkyl phenol sulfonic polyoxyethylene ether carboxylate and preparation thereof

A technology of alkylphenolsulfonic acid polyoxyethylene ether carboxylate and alkylphenol, which is applied in the preparation of sulfonic acid, chemical instruments and methods, preparation of organic compounds, etc., can solve the problems of poor oil displacement efficiency, high production cost, formation and oil well damage to achieve the effect of enhanced oil recovery

Active Publication Date: 2008-10-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] One of the technical problems to be solved by the present invention is that the oil displacement agent containing surfactant in the prior art has poor oil displacement efficiency under high temperature and high salinity conditions, and at the same time, because it contains alkali, it will cause damage to the formation and oil well, and corrode equipment and pipelines , the problem of high production cost, a new polyoxyethylene ether carboxylate of alkylphenol sulfonic acid is provided

Method used

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  • Alkyl phenol sulfonic polyoxyethylene ether carboxylate and preparation thereof
  • Alkyl phenol sulfonic polyoxyethylene ether carboxylate and preparation thereof
  • Alkyl phenol sulfonic polyoxyethylene ether carboxylate and preparation thereof

Examples

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Effect test

Embodiment 1

[0034] Synthesis of Sodium Nonylphenolsulfonic Acid Polyoxyethylene (7) Ether Carboxylate

[0035] (1) Add 110 grams (0.5 moles) of nonylphenol and 1% calcium oxide catalyst of phenol weight in the reactor equipped with condensing device, stirring device and gas disperser, when heating to 135 ℃ while flowing nitrogen, add 12 grams of water, stirred and reacted for 1 hour. Then first distill water at normal pressure, then decompress under 20 mm Hg vacuum, vacuumize at 140°C for 20 minutes to evaporate moisture, cool the solution to 80°C, slowly add 20% by weight of the theoretical acid amount of the neutralization catalyst of concentrated sulfuric acid. Heat the system temperature to 85-90°C, turn on the vacuum system, dehydrate under high vacuum for 1 hour, then use nitrogen to blow 3-4 times to remove the air in the system, then adjust the reaction temperature of the system to 150°C Add 156 grams of ethylene oxide, control the pressure ≤ 0.40MPa to carry out alkoxylation re...

Embodiment 2

[0040] Sodium nonylphenolsulfonic acid polyoxyethylene (7) ether carboxylate

[0041] (1) Add 110 grams (0.5 moles) of nonylphenol and 1% calcium oxide catalyst of phenol weight in the reactor equipped with condensing device, stirring device and gas disperser, when heating to 135 ℃ while flowing nitrogen, add 12 grams of water, stirred and reacted for 1 hour. Then first distilled water at normal pressure, then decompressed under 20 millimetres of mercury vacuum, vacuumed at 140°C for 20 minutes to evaporate moisture, cooled the solution to 80°C, and slowly added 20% by weight of the theoretical acid content of the neutralization catalyst of concentrated sulfuric acid. Heat the system temperature to 85-90°C, turn on the vacuum system, dehydrate under high vacuum for 1 hour, then use nitrogen to blow 3-4 times to remove the air in the system, then adjust the reaction temperature of the system to 150°C Add 156 grams of ethylene oxide, control the pressure ≤ 0.40MPa to carry out...

Embodiment 3

[0046] Synthesis of Sodium Dodecylphenol Sulfonate Polyoxyethylene (10) Ether Carboxylate

[0047] (1) Add 131 grams of dodecylphenol and 1.5 grams of calcium oxide catalyst to a reactor equipped with a condensing device, a stirring device and a gas disperser, and when heating to 135° C. while feeding nitrogen, add dodecyl 10% by weight of phenol in water, stirred for 1 hour. Then first normal pressure distilled water, then decompressed under 20 mm Hg vacuum, evaporated moisture at 140 DEG C for 20 minutes, cooled the solution to 80 DEG C, slowly added dropwise neutralizing catalyst theoretical acid amount 20 (weight )% concentrated sulfuric acid, heat the system temperature to 85-90°C, turn on the vacuum system, dehydrate under high vacuum for 1 hour, purge 3-4 times with nitrogen to remove the air in the system, and then adjust the reaction temperature of the system to Slowly feed 222 g of ethylene oxide at 150°C for alkoxylation reaction; after the reaction, purging the sy...

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Abstract

The invention relates to alkylphenol sulfonic polyoxyethylene ether carboxylate and the preparation method thereof, mainly aiming at solving the problems that current oil displacement agent containing surfactant is poor in oil displacement efficiency under high temperature with the existence of high salt and that the oil displacement agent contains alkali and causes damages to the stratum and the oil field and erodes the equipment and the pipes, which results in high production cost. The invention adopts alkylphenol sulfonic polyoxyethylene ether carboxylate with general molecular formula (I)to solve the problem; wherein M is alkali metal, ammonium group or amidocyanogen; R is alkyl from C1-C22; n is any integer from 1 to 20. The alkylphenol sulfonic polyoxyethylene ether carboxylate can be applied to the production of tertiary oil recovery in oil fields.

Description

technical field [0001] The invention relates to an alkylphenol sulfonic acid polyoxyethylene ether carboxylate and a preparation method thereof. Background technique [0002] The main oilfields in my country have entered a period of high water cut after primary and secondary extraction, and crude oil production has declined year by year. In order to improve crude oil recovery and maximize the development of remaining reserves, tertiary oil recovery technology has played a very important role in ensuring stable and high production of oil fields . Among them, the ASP flooding (alkali-polymer-surfactant) technology using surfactant can greatly improve the oil displacement efficiency in the case of low surfactant dosage, so it has become economically and technically important. A very successful new technology for enhanced oil recovery. The main mechanism is: after the oil field enters the high water cut period, the remaining oil is trapped in the pores of the reservoir rock in ...

Claims

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Application Information

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IPC IPC(8): C07C309/42C07C303/22C07C303/14C09K8/584
Inventor 陈荣福张卫东沙鸥
Owner CHINA PETROLEUM & CHEM CORP
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