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Aralkyl alcohol polyoxyethylene ether compound and preparation method and application thereof

A technology of polyoxyethylene ethers and aryl alkyl alcohols, which is applied in the field of aryl alkyl alcohol polyoxyethylene ether compounds and their preparation, can solve the problems of low oil-water interfacial activity, increased difficulty in producing fluid treatment, and oil displacement. The emulsification of the agent should not be too strong, etc., to achieve the effect of good interface activity and emulsification performance, high emulsification performance and interface activity, and low price

Active Publication Date: 2012-12-05
PETROCHINA CO LTD
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the emulsification of the oil displacement agent should not be too strong, otherwise it will greatly increase the difficulty of processing the produced fluid
[0003] At present, the commonly used water-soluble emulsifiers in oil fields are alkyl alcohol polyoxyethylene ethers or their derivatives, which have good emulsifying ability and stability, but the oil-water interfacial activity is relatively low, usually 10 0 About mN / m

Method used

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  • Aralkyl alcohol polyoxyethylene ether compound and preparation method and application thereof
  • Aralkyl alcohol polyoxyethylene ether compound and preparation method and application thereof
  • Aralkyl alcohol polyoxyethylene ether compound and preparation method and application thereof

Examples

Experimental program
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Embodiment 1

[0044] This example provides a nonionic surfactant with an aromatic group in its side chain, which has the following structure

[0045]

[0046] Wherein, n is 5, 7, 10, 15 or 20 (respectively denoted as EB5EO, EB7EO, EB10EO, EB15EO, EB20EO), x+y=15.

[0047] The upper nonionic surfactant provided in this embodiment is prepared according to the following steps:

[0048](1) Fu's alkylation reaction: In a sealed reaction kettle, add 3.5mol m-xylene and 0.75mol methanesulfonic acid, after the temperature rises to about 120°C, start to add 1mol methyl oleate dropwise, and the dropping time is controlled At 6h, after the dropwise addition, continue to react for 3h, cool to room temperature, stand to separate layers, slowly add dropwise with ice water (equal volume with the catalyst), rinse three times, separate the aqueous solution of the catalyst in the lower layer, store it together, and store it in the upper layer Continue to wash the liquid three times with ice water, and dr...

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Abstract

The invention provides an aralkyl alcohol polyoxyethylene ether compound and a preparation method and application thereof. The structural formula of the aralkyl alcohol polyoxyethylene ether compound is shown in the specifications, wherein R is phenyl, tolyl or ditolyl; x and y are an integer of 0 to 15; the sum of x and y is 15; and n is an integer of 3 to 25. The invention also provides a surfactant composition containing the aralkyl alcohol polyoxyethylene ether compound, and application of the composition to tertiary oil recovery.

Description

technical field [0001] The present invention relates to an aryl alkyl alcohol polyoxyethylene ether compound and its preparation method and application, specifically to a branched fatty alcohol polyoxyethylene ether compound containing an aromatic group and its preparation method and application. Especially its application in oil fields as a non-ionic surfactant is especially suitable for oil displacement and heavy oil viscosity reduction. Background technique [0002] In oilfield production technology, chemical composite flooding refers to adding polymer, surfactant and alkali to water to exert the synergistic effect between the components, and to utilize the mobility control ability and viscoelastic effect of the polymer and the large-scale effect of the surfactant. It is a tertiary oil recovery technology that reduces the oil-water interfacial tension, improves the sweep coefficient and improves the oil displacement efficiency, and then improves the recovery factor. With...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C43/178C07C41/03C08G65/28C09K8/584C09K8/588
Inventor 张群周朝辉刘春德张帆蔡红岩
Owner PETROCHINA CO LTD
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