Aromatic group-containing amine oxide type ampholytic surfactant, and preparation method and application thereof

A surfactant and amine oxide technology, applied in chemical instruments and methods, drilling compositions, chemical/physical processes, etc., can solve the problems of high production cost, low high temperature resistance, etc., and improve compatibility. , improve viscoelasticity, improve the effect of interface activity

Active Publication Date: 2013-09-04
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of clean fracturing fluid has the disadvantages of expensive production cost and lower high temperature resistance than modified guar gum, which limits its application in tertiary oil recovery.

Method used

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  • Aromatic group-containing amine oxide type ampholytic surfactant, and preparation method and application thereof
  • Aromatic group-containing amine oxide type ampholytic surfactant, and preparation method and application thereof
  • Aromatic group-containing amine oxide type ampholytic surfactant, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] This embodiment provides an amine oxide amphoteric surfactant containing an aromatic group, the structure of which is shown in formula 4,

[0048]

[0049] The synthetic route of this amine oxide amphoteric surfactant containing aromatic group is as follows:

[0050]

[0051] The preparation method of the amine oxide amphoteric surfactant containing aromatic groups comprises the following steps:

[0052] (1) Fowler's Alkylation: In a sealed reactor, add 2.5mol m-xylene and 1.5mol protonic acid catalyst, then raise the temperature to 120°C, add 1mol methyl oleate dropwise for 6 hours, drop After the addition was completed, react for 3 hours to obtain a crude product mixture of m-xylene oleate; at room temperature, allow the crude product mixture of m-xylene oleate to stand for stratification, and add ice water dropwise thereto Rinse three times (the amount of each ice water rinse is the same as the volume of the protonic acid catalyst), separate the aqueous soluti...

Embodiment 2

[0064] This example provides the evaluation of the interfacial properties and rheological properties of the amine oxide amphoteric surfactant containing aromatic groups in Example 1, and the composite surface activity of the amine oxide amphoteric surfactant and low tension surfactant. Evaluation of the interface properties and rheological properties of the agent.

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Abstract

The invention provides an aromatic group-containing amine oxide type ampholytic surfactant, and a preparation method and application thereof. The structural formula of the aromatic group-containing amine oxide type ampholytic surfactant is shown as a formula 1, wherein m is 0 or 1, and n is 0 or 1. The invention further provides a surfactant composition which contains more than two types of the aromatic group-containing amine oxide type ampholytic surfactants shown as the formula 1. The preparation method of the aromatic group-containing amine oxide type ampholytic surfactant comprises the following step of: enabling aryl alkyl tertiary amine and hydrogen peroxide to react for 4-5 hours at 70-80 DEG C to obtain the aromatic group-containing amine oxide type ampholytic surfactant. The invention further provides the application of the aromatic group-containing amine oxide type ampholytic surfactant or the surfactant composition in tertiary oil recovery. The surfactant provided by the invention has better interfacial activity and tackifying performance, and can be used for increasing the petroleum recovery rate when being used in the tertiary oil recovery.

Description

technical field [0001] The invention relates to an amine oxide amphoteric surfactant containing an aromatic group, a preparation method and an application thereof, and belongs to the technical field of surfactants in the field of petroleum exploitation. Background technique [0002] Internationally, oil reservoirs with permeability between 0.1 mD and 50 mD are defined as low-permeability reservoirs. With the continuous improvement of exploration and development, it is becoming more and more difficult to stabilize production in mature areas. The development and production of low-permeability and ultra-low-permeability reservoirs has become the only way for my country's onshore petroleum industry to increase reserves and production. However, most of the low-permeability oil fields currently have an average calibrated recovery rate of only about 20%; and the degree of recovery is low, and it is difficult to achieve the target of calibrated recovery rate in some blocks; and afte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/16B01F17/22C09K8/74C09K8/584C09K23/16C09K23/22
Inventor 张群周朝辉蔡红岩张帆武劼
Owner PETROCHINA CO LTD
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