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Preparation method of oil field demulsifier with high dehydration efficiency

A demulsifier and high-efficiency technology, which is applied in the field of oil field demulsifier preparation, can solve problems such as unreachable, lower pass rate of demulsifier finished products, incomplete mixing of main materials and auxiliary agents, etc., to facilitate production, ensure use effect, improve The effect of pass rate

Pending Publication Date: 2021-09-14
武汉市华鼎成新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a method for preparing an oilfield demulsifier with high dehydration efficiency, which solves the problem of incomplete mixing of main materials and auxiliary agents in the production process of the existing oilfield demulsifier, which causes the demulsifier to be demulsified. The pass rate of the finished product is reduced, which seriously affects the use effect of the demulsifier. It cannot be achieved by improving the production process of the demulsifier and fully mixing the auxiliary materials with the main material to ensure the pass rate of the demulsifier. It cannot be achieved by using ultrasonic homogenization. way, after the auxiliary agent is added to the main material, the purpose of rapid and thorough mixing

Method used

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  • Preparation method of oil field demulsifier with high dehydration efficiency
  • Preparation method of oil field demulsifier with high dehydration efficiency

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Effect test

Embodiment 1

[0028] A method for preparing an oil field demulsifier with high dehydration efficiency, specifically comprising the following steps:

[0029] S1. Preparation of raw materials: First, measure 15 parts of polyoxyethylene polyoxypropylene stearyl ether, 15 parts of alkyl phenolic resin, 13 parts of polyoxyethylene, and 13 parts of polyoxyethylene Propylene, 4 parts of lauric acid, 4 parts of ethylenediamine, 4 parts of potassium hydroxide, 4 parts of ethylene oxide, 4 parts of polyethylene oxide and 4 parts of carbon tetrafluoride;

[0030] S2. Mixing of main ingredients: put the polyoxyethylene polyoxypropylene stearyl ether and alkylphenol-formaldehyde resin weighed in step S1 respectively in the reaction equipment, add potassium hydroxide and zinc oxide respectively, vacuumize, inject nitrogen, Vacuumize again, heat to 155°C, keep warm for 1.5h, control the temperature of the reaction equipment to 155°C, and the pressure to 0.25MPa;

[0031] S3. Reaction of the main material...

Embodiment 2

[0036] A method for preparing an oil field demulsifier with high dehydration efficiency, specifically comprising the following steps:

[0037] S1. Preparation of raw materials: First, measure 10 parts of polyoxyethylene polyoxypropylene stearyl ether, 10 parts of alkylphenolic resin, 10 parts of polyoxyethylene, and 10 parts of polyoxyethylene Propylene, 3 parts of lauric acid, 3 parts of ethylenediamine, 3 parts of potassium hydroxide, 3 parts of ethylene oxide, 3 parts of polyethylene oxide and 3 parts of carbon tetrafluoride;

[0038] S2. Mixing of main ingredients: put the polyoxyethylene polyoxypropylene stearyl ether and alkylphenol-formaldehyde resin weighed in step S1 respectively in the reaction equipment, add potassium hydroxide and zinc oxide respectively, vacuumize, inject nitrogen, Vacuumize again, heat to 150°C, keep warm for 1h, control the temperature of the reaction equipment to 150°C, and the pressure to 0.2MPa;

[0039] S3. Reaction of main ingredients: Add t...

Embodiment 3

[0044] A method for preparing an oil field demulsifier with high dehydration efficiency, specifically comprising the following steps:

[0045] S1. Preparation of raw materials: First, measure 20 parts of polyoxyethylene polyoxypropylene stearyl ether, 20 parts of alkylphenolic resin, 15 parts of polyoxyethylene, and 15 parts of polyoxyethylene Propylene, 5 parts of lauric acid, 5 parts of ethylenediamine, 5 parts of potassium hydroxide, 5 parts of ethylene oxide, 5 parts of polyethylene oxide and 5 parts of carbon tetrafluoride;

[0046] S2. Mixing of main ingredients: put the polyoxyethylene polyoxypropylene stearyl ether and alkylphenol-formaldehyde resin weighed in step S1 respectively in the reaction equipment, add potassium hydroxide and zinc oxide respectively, vacuumize, inject nitrogen, Vacuumize again, heat to 160°C, keep warm for 2h, control the temperature of the reaction equipment to 160°C, and the pressure to 0.3MPa;

[0047] S3. Reaction of main ingredients: Add...

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Abstract

The invention discloses a preparation method of an oil field demulsifier with high dehydration efficiency. The preparation method comprises the following specific steps: S1, preparation of raw materials; S2, mixing of main materials; S3, reaction of the main materials; S4, primary mixing; S5, secondary mixing; and S6, post-treatment: conducting filling on the demulsifier obtained in the step S5 through filling equipment. The invention relates to the technical field of petroleum production. According to the preparation method of the oil field demulsifier with high dehydration efficiency, the yield of the demulsifier can be ensured by improving the production process of the demulsifier and fully mixing auxiliary materials and the main materials, the purpose of quick and thorough mixing after the auxiliary materials are added into the main materials in an ultrasonic homogenizing manner is well achieved, the main materials and the auxiliary agents are thoroughly mixed, the qualified rate of a finished demulsifier product is greatly improved, the using effect of the demulsifier is ensured, and production of the demulsifier by production personnel is greatly facilitated.

Description

technical field [0001] The invention relates to the technical field of petroleum production, in particular to a method for preparing an oilfield demulsifier with high dehydration efficiency. Background technique [0002] Because some solids are difficult to dissolve in water, when one or more of these solids exist in an aqueous solution in large quantities, under the agitation of hydraulic or external power, these solids can exist in water in an emulsified state to form an emulsion. Theoretically speaking, this system is unstable, but if there are some surfactants, the emulsification state is very serious, and even the two phases are difficult to separate, the most typical is the oil-water mixture in oil-water separation and in sewage treatment The water-oil mixture forms a relatively stable water-in-oil or oil-in-water structure in this two-phase. The theoretical basis is the "electric double layer structure". In this case, put some chemicals to destroy the stable electric ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G33/04
CPCC10G33/04
Inventor 张济超
Owner 武汉市华鼎成新材料有限公司