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Preparation method of high-efficiency high-temperature acidizing slow-released agent

A slow-release and high-temperature technology, which is applied in the field of preparation of high-efficiency high-temperature acidified slow-release agents, can solve the problem that the product does not have hydrophilic properties, and achieve the effect of good interfacial activity and small dosage.

Inactive Publication Date: 2015-12-09
DONGYING SPRING PETROLEUM ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem is: without adding hydrophilic groups, the prepared products do not have good hydrophilic properties

Method used

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  • Preparation method of high-efficiency high-temperature acidizing slow-released agent
  • Preparation method of high-efficiency high-temperature acidizing slow-released agent

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Embodiment 1: the preparation method of a kind of high-efficiency high-temperature acidification slow-release agent mentioned in the present invention, comprises the following steps:

[0021] (1) Add 524kg of methylaniline and 435kg of formaldehyde into the reaction kettle, add 18kg of concentrated sulfuric acid dropwise, control the temperature at 80-90°C, and continue the reaction for 2 hours.

[0022] (2) Put 520kg of acetophenone into the reaction kettle, heat up and vacuum dehydrate after adding, until the temperature reaches 130-140°C, and there is no more water.

[0023] (3) Continue to heat up to 180°C, keep the temperature for 8 hours, and cool down to 70-80°C.

[0024] (4) Slowly add 770 kg of benzyl chloride dropwise to the reaction kettle to continue the reaction. After the dropwise addition of benzyl chloride is completed, keep the temperature at 80°C and continue the reaction for 2 hours.

[0025] (5) After the reaction is completed, pump 500kg of organic...

Embodiment 2

[0032] Embodiment 2: the preparation method of a kind of high-efficiency high-temperature acidification slow-release agent mentioned in the present invention, comprises the following steps:

[0033] (1) Add 524kg of methylaniline and 435kg of formaldehyde into the reaction kettle, add 25kg of concentrated sulfuric acid dropwise, control the temperature at 80-90°C, and continue the reaction for 2 hours.

[0034] (2) Put 550kg of acetophenone into the reaction kettle, heat up and vacuum dehydrate after adding, until the temperature reaches 130-140°C, and there is no more water.

[0035] (3) Continue to heat up to 180°C, keep the temperature for 8 hours, and cool down to 70-80°C.

[0036] (4) Slowly add 600 kg of benzyl chloride dropwise to the reaction kettle to continue the reaction, and after the addition of benzyl chloride is completed, keep the temperature at 80°C and continue the reaction for 2 hours.

[0037] (5) After the reaction is completed, pump 500kg of organic solv...

Embodiment 3

[0038] Embodiment 3: the preparation method of a kind of high-efficiency high-temperature acidification sustained-release agent mentioned in the present invention, comprises the following steps:

[0039] (1) Add 500kg of methylaniline and 450kg of formaldehyde into the reaction kettle, add 30kg of concentrated sulfuric acid dropwise, control the temperature at 80-90°C, and continue the reaction for 2 hours.

[0040] (2) Put 550kg of acetophenone into the reaction kettle, heat up and vacuum dehydrate after adding, until the temperature reaches 130-140°C, and there is no more water.

[0041] (3) Continue to heat up to 180°C, keep the temperature for 8 hours, and cool down to 70-80°C.

[0042] (4) Slowly add 550 kg of benzyl chloride dropwise to the reaction kettle to continue the reaction. After the dropwise addition of benzyl chloride is completed, keep the temperature at 80°C and continue the reaction for 2 hours.

[0043] (5) After the reaction is completed, pump 500kg of or...

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Abstract

The invention relates to a preparation method of a high-efficiency high-temperature acidizing slow-released agent. According to the technical scheme, the preparation method comprises the steps that amidation is conducted on the raw materials which mainly comprise ketone, aldehyde, amine, benzyl chloride and the like, Mannich alkali is synthesized through a reaction, and the Mannich alkali and the benzyl chloride are utilized to synthesize an excellent acidizing slow-released agent, namely, a Mannich alkali quaternary ammonium salt slow-released agent. By means of the acidizing slow-released agent, the defects that the dosage of a traditional aldehyde, ketone and amine condensation compound is large, and the effect is poor are overcome, and the acidizing slow-released agent has the advantages of being good in interfacial activity, small is dosage and capable of being dissolved in water; at present, the acidizing slow-released agent is ready to be put into industrial production, the on-site trial stage is started, and a good effect is achieved.

Description

technical field [0001] The invention relates to the field of metal surface corrosion protection and auxiliary agents for acidizing and fracturing in oil and gas exploitation, in particular to a preparation method of a high-efficiency high-temperature acidizing slow-release agent. Background technique [0002] Metal corrosion is a kind of public hazard, which is one of the main reasons for shortening the life of equipment, causing production shutdown and environmental pollution. Practice has proved that among various metal corrosion protection methods, adding a slow-release agent is a method with simple process, low cost and strong usability. Generally speaking, adding a small amount or a small amount of slow-release agent can significantly reduce the corrosion rate of metal materials in this medium, while maintaining the original physical and mechanical properties of metal materials. The use of slow-release agents does not require special equipment, nor does it need to chan...

Claims

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Application Information

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IPC IPC(8): C07C221/00C07C225/16C09K8/54
Inventor 孙永强孙志强韩庆建孙方园蒋后兴任钦彬高小秀任平平
Owner DONGYING SPRING PETROLEUM ENG TECH
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