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Preparation method of novel organic amine adsorbed film type corrosion inhibitor for oil field

An adsorption membrane type, organic amine technology, applied in earth-moving drilling, wellbore/well components, etc., can solve the problems of single target product, narrow application range, affecting the reaction process, etc., to reduce the conditions required for the reaction and the scope of application The effect of improving and improving the reaction yield

Active Publication Date: 2014-04-30
GUANGZHOU ZHENKE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The solvent method requires a low reaction temperature so that the product will not deteriorate, but the temperature is low, and the water generated in the reaction should not be separated, which will affect the reaction process. If the temperature is too high, the reaction product will be oxidized again, and the water output and product acid value It takes a long time to judge the end point of the reaction and the yield is low; although the vacuum method does not need to consider the recovery of the solvent, the reaction time is short, but the raw materials are easy to be taken away, and it is difficult to adjust the relationship between temperature and pressure
In addition, the target product obtained in all preparation methods at home and abroad is single, and the actual use range is narrow

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Connect the reaction kettle set in the microwave vacuum drying box with the vacuum pump and the solvent recovery device with pipes, and add the mixed fatty acid of lauric acid and myristic acid and triethylenetetramine to the reaction kettle, the molar ratio of the two is 2:1, Add a small amount of catalyst Zn to the reactor, evacuate the reactor to a vacuum of 0.1Mpa, keep the vacuum, start the microwave drying device and the solvent recovery device, set the reaction temperature to 140-160°C for condensation reaction, After the reaction is completed, the vacuum is cancelled, the ethylene glycol butyl ether iodide product is added to the reaction kettle, and 20% water is added to react at 90-100° C. to obtain a corrosion inhibitor product with a yield of 95%.

Embodiment 2

[0027] Connect the reaction kettle set in the microwave vacuum drying box with the vacuum pump and the solvent recovery device with pipelines, and add the mixed fatty acid of palmitic acid and octadecanoic acid and diethylene triamine to the reaction kettle, the molar ratio of the two is 2:1 Add a small amount of catalyst Zn into the reaction kettle, vacuum the reaction kettle to 0.1Mpa, keep the vacuum, start the microwave drying device and the solvent recovery device switch, set the reaction temperature 140-160 ℃ for condensation reaction After the reaction is completed, the vacuum is cancelled, the diethylene glycol butyl ether iodide product is added to the reaction kettle, and 20% water is added to react at 80-90°C to obtain a corrosion inhibitor product with a yield of 94%.

Embodiment

[0028] Example: Test the corrosion inhibition rate of the product:

[0029] (1) The determination is carried out according to SY / T5273-2000;

[0030] (2) Test temperature: 65℃;

[0031] (3) Test time: 72H;

[0032] (4) Water quality The simulated water is prepared according to the water quality data provided by an oil field.

[0033] The results are as follows:

[0034] Adding amount (ppm)

Average corrosion rate (mm / a)

Corrosion inhibition rate (%)

0 (blank)

0.278

---

4

0.05591

79.9

6

0.04733

82.9

8

0.03985

85.6

10

0.03543

87.2

[0035] It can be seen from the above data that when the addition amount of the corrosion inhibitor product provided by the present invention is 10 ppm, the average corrosion inhibition speed can be reduced to 0.03543 mm / a, and the corrosion inhibition rate is as high as 87.2%.

[0036] Compared with the existing technology, the effects and benefits of this product are:

[0037] (1) The use of microwave heating shortens the ...

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PUM

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Abstract

The invention discloses a preparation method of a novel organic amine adsorbed film type corrosion inhibitor for an oil field. The preparation method comprises the following steps of: carrying out condensation reaction on mixed fatty acid and polyethylene polyamine reagents in the presence of a catalyst under microwave refluxing, and then reacting the reaction product with an iodinated product of ethylene glycol monobutyl ether (or diethylene glycol butyl ether) to obtain a novel organic amine mixture. According to the invention, the obtained novel organic amine compound has the characteristics of excellent water solubility, low use amount and high corrosion inhibition efficiency; a microwave heating device is used for heating and the catalyst is added, thus the condensation reaction time is shortened, required reaction conditions are reduced, and the reaction yield is increased; and a recovering device is arranged, thus excessive reaction reagents can be recycled and the cost is saved.

Description

Technical field [0001] The invention relates to the field of oil field development, in particular to a preparation method of a novel organic amine adsorption film type corrosion inhibitor for oil fields. Background technique [0002] At present, the development of my country's oil fields mainly uses water injection to extract oil. By injecting large amounts of water into the ground, and then pumping out crude oil along with water from the ground. Whether the injected water comes from oilfield effluent or supplemented fresh water, it needs to be strictly treated to meet the requirements of oilfield water injection standards. Because the oil field water contains dissolved oxygen, carbon dioxide, salts, sulfides, grease stains, fungi and other substances, and the water temperature is relatively high, it is very corrosive to the transported metal pipelines and related equipment. Therefore, taking anti-corrosion measures for pipelines and equipment has always been a subject of great...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/54
Inventor 陈德源
Owner GUANGZHOU ZHENKE TECH