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Alkylphenol polyoxyethylene ether hydroxysulfonate betaine and preparation method thereof

A technology of alkylphenol polyoxyethylene ether hydroxysulfonate and alkylphenol polyoxyethylene ether, which is applied in the directions of sulfonate preparation, chemical instruments and methods, drilling compositions, etc., and can solve the problem of corrosion equipment and transportation. Pipeline, poor oil displacement efficiency, formation and oil well damage, etc., to achieve the effect of reducing huge damage, superior salt resistance, and optimal temperature resistance

Active Publication Date: 2011-12-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] 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, due to alkali, it will cause damage to the formation and oil well, and cause Corrosion equipment and pipeline problems, providing a new type of alkylphenol polyoxyethylene ether hydroxysulfonate betaine surfactant

Method used

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  • Alkylphenol polyoxyethylene ether hydroxysulfonate betaine and preparation method thereof
  • Alkylphenol polyoxyethylene ether hydroxysulfonate betaine and preparation method thereof
  • Alkylphenol polyoxyethylene ether hydroxysulfonate betaine and preparation method thereof

Examples

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Effect test

Embodiment 1

[0033] Synthesis of Amyl (R=5) Phenol Polyoxyethylene Ether (n=2) Sodium Hydroxysulfonate Betaine

[0034] 1) Synthesis of chloropentyl (R=5) phenol polyoxyethylene ether (n=2)

[0035] Add 100g of pentyl (R=5) phenol polyoxyethylene ether (n=2) and 57g of pyridine into a four-neck round bottom flask equipped with a reflux condensing device, a thermometer, a stirrer and a gas absorption device, and heat to 70 under stirring. °C, slowly add 85 g of thionyl chloride dropwise with a dropping funnel, and react at 90 °C for 10 hours after the dropwise addition is completed. After the reaction, the reactants were left to stand, cooled and separated into layers. The upper organic phase was the target product, and the lower layer was solid pyridinium hydrochloride. Use 30% sodium hydroxide solution to neutralize the upper organic phase to neutral or weakly alkaline, separate the inorganic salt, then wash the upper organic phase with hot saturated saline for 5 to 6 times, and obtain t...

Embodiment 2

[0041] Synthesis of Nonyl (R=9) Phenol Polyoxyethylene Ether (n=10) Sodium Hydroxysulfonate Betaine

[0042] 1) Synthesis of chlorinated nonylphenol polyoxyethylene (n=10) ether

[0043] Add 100g of nonyl (R=9) phenol polyoxyethylene (n=10) ether and 22g of pyridine into a four-neck round bottom flask equipped with a reflux condensing device, a thermometer, a stirrer and a gas absorption device, and heat to 70 32.5 g of thionyl chloride was slowly added dropwise with a dropping funnel, and reacted at 70°C for 8 hours after the dropwise addition was completed. After the reaction, the reactants were left to stand, cooled and separated into layers. The upper organic phase was the target product, and the lower layer was solid pyridinium hydrochloride. Use 30% sodium hydroxide solution to neutralize the upper organic phase to neutral or weakly alkaline, separate the inorganic salt, then wash the upper organic phase with hot saturated saline for 5 to 6 times, and obtain the interme...

Embodiment 3

[0049] Synthesis of dodecylphenol polyoxyethylene ether (n=20) sodium hydroxysulfonate betaine

[0050] 1) Synthesis of chlorinated dodecylphenol polyoxyethylene (n=20) ether

[0051] Add 100g of dodecylphenol polyoxyethylene (n=20) ether and 13g of pyridine into a four-neck round bottom flask equipped with a reflux condensing device, a thermometer, a stirrer and a gas absorption device, heat to 60°C under stirring, and use 18.7 g of thionyl chloride was slowly added dropwise into the dropping funnel, and reacted at 80° C. for 10 hours after the dropwise addition was completed. After the reaction, the reactants were left to stand, cooled and separated into layers. The upper organic phase was the target product, and the lower layer was solid pyridinium hydrochloride. Use 30% sodium hydroxide solution to neutralize the upper organic phase to neutral or weakly alkaline, separate the inorganic salt, then wash the upper organic phase with hot saturated saline for 5 to 6 times, and...

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Abstract

The invention relates to an alkylphenol polyoxyethylene ether hydroxyl sulfonate type betaine surfactant and a preparation method thereof. The invention mainly solves the problem of poor oil displacement effect of the surfactant serving as an oil displacement agent in the conventional production technology under the conditions of high temperature and high mineralization degree and the problems that great damage is brought to stratum and oil wells, equipment and conveying pipelines are corroded, environment is polluted and the like because alkali is contained. The invention adopts the technical scheme that: the molecular general formula of the alkylphenol polyoxyethylene ether hydroxyl sulfonate type betaine is shown as the specification, wherein M is any one of alkali metal and alkaline earth metal; R is C1 to C20 hydrocarbyl; and n is any integer of 1 to 30, so that the invention solves the problems better and can be applied to intensified oil production of the oil wells.

Description

technical field [0001] The invention relates to an alkylphenol polyoxyethylene ether hydroxysulfonate type betaine and a preparation method thereof. Background technique [0002] Most of my country's oil fields are now in the stage of high water-cut production, and more than 60% of the oil is still "left behind". Moreover, most of the oilfields developed by water flooding have entered the "double high" stage of high water cut and high recovery, and the problem of "multiple wells and low production" is unavoidable. According to the survey of 82 water injection development zones in 13 major oilfields in my country, the water content of the output fluid reaches 90% at present, and the output decreases by 15 million tons every year. Faced with these problems, it is imperative to rely on technological progress to improve oil recovery and increase recoverable reserves in an all-round way. If the remaining underground oil is extracted, it is equivalent to more than doubling the r...

Claims

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Application Information

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IPC IPC(8): C08G65/00C07C309/14C07C303/32C09K8/584
Inventor 孙文彬李应成沙鸥袁明
Owner CHINA PETROLEUM & CHEM CORP
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