Synthesis method of broad-spectrum and high-efficiency crude oil demulsifier

A crude oil demulsifier and a synthesis method technology are applied in the field of chemical treatment agent for oilfield development and production fluid, which can solve the problems of large amount of demulsifier, difficulty in taking into account oil and water, poor adaptability, etc., and achieves good demulsification effect and strong wetting and penetrating ability. , the effect of strong adaptability

Inactive Publication Date: 2017-05-31
东营明德石油科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a synthetic method of a broad-spectrum high-efficiency crude oil demulsifier aimed at the above-mentioned defects in the prior art, which solves the problem of large amount of demulsifier used in production fluid treatment, poor adaptability, slow action, oil-water Disadvantages such as difficulty in balancing

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  • Synthesis method of broad-spectrum and high-efficiency crude oil demulsifier
  • Synthesis method of broad-spectrum and high-efficiency crude oil demulsifier

Examples

Experimental program
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Effect test

Embodiment 1

[0021] ⑴. Put 100kg of lauric acid and 160kg of monoethanolamine into the reaction equipment. After vacuuming for 15 minutes, replace it with nitrogen twice, raise the temperature to 50°C, and start stirring; continue to raise the temperature to 110-120°C, keep the temperature for 2 hours, and gradually raise the temperature (15-20°C in one stage), until the temperature reaches 170°C.

[0022] (2) Heating up and vacuum dehydration until the temperature reaches 165-170°C and no more moisture is produced to produce alkanolamides.

[0023] (3) When the temperature is lowered to 100°C, vacuum for 15 minutes until the pressure in the reactor reaches the minimum, add 15kg of potassium hydroxide (it can be a 30-50% aqueous solution of potassium hydroxide), and stir evenly; steadily raise the temperature to 110-140°C, and vacuum dehydrate until After the water is removed, the temperature is raised to 140°C; nitrogen is filled to normal pressure, and 6500kg of propylene oxide is added ...

Embodiment 2

[0029] ⑴. Throw 100kg of stearic acid and 80kg of diethanolamine into the reaction equipment, vacuum for 15 minutes, replace with nitrogen twice, raise the temperature to 50°C, start stirring; continue to heat up to 110-120°C, keep the temperature for 2h, stage Raise the temperature (15-20°C in one stage) until the temperature reaches 170°C.

[0030] (2) Heating up and vacuum dehydration until the temperature reaches 165-170°C and no more moisture is produced to produce alkanolamides.

[0031] (3) When the temperature is lowered to 100°C, vacuum for 15 minutes until the pressure in the reactor reaches the minimum, add 20kg of potassium hydroxide (it can be a 30-50% aqueous solution of potassium hydroxide), and stir evenly; steadily raise the temperature to 110-140°C, and vacuum dehydrate until After the water is removed, the temperature is raised to 140°C; nitrogen is filled to normal pressure, 8500kg of propylene oxide is added dropwise in sequence and proportion, and the rea...

Embodiment 3

[0037] (1) Throw 110kg of behenic acid and 120kg of diethanolamine into the reaction equipment, vacuum for 15 minutes, replace with nitrogen twice, raise the temperature to 50°C, start stirring; continue to raise the temperature to 110-120°C, keep the temperature for 2 hours, stage by stage Raise the temperature (15-20°C in one stage) until the temperature reaches 170°C.

[0038] (2) Heating up and vacuum dehydration until the temperature reaches 165-170°C and no more moisture is produced to produce alkanolamides.

[0039] (3) When the temperature is lowered to 100°C, vacuum for 15 minutes until the pressure in the reactor reaches the minimum, add 15kg of potassium hydroxide (it can be a 30-50% aqueous solution of potassium hydroxide), and stir evenly; steadily raise the temperature to 110-140°C, and vacuum dehydrate until After the water is removed, the temperature is raised to 140°C; nitrogen is filled to normal pressure, and 7600kg of propylene oxide is added dropwise in se...

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Abstract

The invention relates to the field of chemical treatment agents of oil field development produced liquid and particularly relates to a synthesis method of a broad-spectrum and high-efficiency crude oil demulsifier. According to the technical scheme, the method comprises the following steps: reacting higher aliphatic acid with alcohol amine to prepare alkanolamide, then carrying out ring-opening polymerization via alkanolamide, epoxypropane and oxirane according to a certain sequence and ratio, carrying out terminal group modification on the polymerized product by using quantitative polybasic organic acid, TDI or unsaturated low molecular acid, then compounding to prepare the product. The demulsifier prepared by the method has the beneficial effects that the defects of high consumption, poor effect and high content of oil in dehydrated water of the conventional water-soluble demulsifier can be overcome, the demulsifier has high interfacial activity, high wettability and infiltrability and high flocculation performance and coalescence performance, and the demulsifier has the advantages of low consumption, high adaptability, low content of oil in produced water and excellent demulsification effect.

Description

technical field [0001] The invention relates to the field of chemical treatment agents for oilfield development and production fluids, in particular to a synthesis method of a broad-spectrum high-efficiency crude oil demulsifier. Background technique [0002] With the continuous deepening, maturity and development of oilfield development and production methods, the water content of oilfield production fluid is continuously increasing; the application of various enhanced oil recovery technologies and means makes the composition and structure of oilfield production fluid more complex and diverse The oil-water separation of the produced fluid has been difficult to meet the expected requirements. After the demulsification and separation, the oil content in the water is high, which increases the difficulty of sewage treatment. In severe cases, it will directly affect or destroy the ecological environment around the oil field. At present, the water content of the produced fluid in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G33/04
CPCC10G33/04C10G2300/1033
Inventor 孙永强刘明新
Owner 东营明德石油科技有限公司
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