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Preparation method of oil field demulsifying agent with high dehydration rate

A technology of dehydration rate and demulsifier, which is applied in the field of preparation of high dehydration rate oil field demulsifier, can solve the problems of low dehydration rate, turbid water quality, large usage, etc., and achieve large specific surface area, high demulsification performance and strong affinity Effect

Active Publication Date: 2018-09-28
大庆奥斯贝森化工科技有限公司
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0006] The technical problem mainly solved by the present invention is to provide a high dehydration rate demulsifier in view of the problems that the current traditional demulsifiers have low dehydration rate, turbid water quality, poor dehydration effect, large amount of use, and still cannot achieve the ideal demulsification effect. Preparation method of oilfield demulsifier

Method used

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Embodiment Construction

[0021] Weigh fresh tofu and chop it with a knife to get crushed tofu pieces. Take a bamboo sieve, put a layer of kraft paper on the bottom of the bamboo sieve, spread the crushed tofu pieces on the kraft paper, and control the laying thickness to 1-2cm. Put the bamboo sieve into a moldy room with a temperature of 25-28°C and a relative air humidity of 60-70%, and let it stand for 7-9 days to grow mold to obtain moldy tofu; Add castor oil with 10% moldy tofu mass in the tank, stir and mix with a sterile rod for 5-10 minutes, seal the mouth of the fermentation tank, and seal and ferment for 9-12 days at a temperature of 30-35°C, and take out the fermentation product after the fermentation is completed , transferred to a high-speed disperser, and dispersed at a speed of 1000 to 1500r / min for 1 to 2 hours to obtain fermented bean curd; mix fermented bean curd with water and acetone at a mass ratio of 1:10:3, and then put it into a In the three-necked flask of the agitator and the ...

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Abstract

The invention relates to a preparation method of an oil field demulsifying agent with high dehydration rate, and belongs to the technical field of crude oil dehydration. Bean curd is used as raw materials; the bean curd is minced and is then flatly paved; the minced bean curd is put into high-temperature and high-humidity environment for mildewing; the mildewed bean curd and castor oil are mixed and fermented to obtain fermented bean curd; then, the fermented bean curd pulp and acyl chloride react to prepare major ingredients of the demulsifying agent; next, the major ingredients of the demulsifying agent are mixed with sodium silicate; hydrochloric acid and sodium silicate react to generate orthosilicic acid precipitates; the precipitates are adsorbed on the surface of the major ingredients of the demulsifying agent; under the high-temperature condition, orthosilicic acid is hydrolyzed to form nanosilicon dioxide, so that a composite structure of the nanosilicon dioxide and the majoringredients of the demulsifying agent is obtained; finally, the oil field demulsifying agent with high dehydration rate is obtained. The prepared oil field demulsifying agent has high dehydration rateand clear water quality; the dehydration effect is good; the use quantity is small; an excellent use effect is achieved.

Description

technical field [0001] The invention relates to a preparation method of a high dehydration rate oilfield demulsifier, belonging to the technical field of crude oil dehydration. Background technique [0002] From the beginning of the 20th century to the present, the world oil industry has a history of more than 100 years of development. Crude oil extraction has gone through the stages of primary oil recovery, secondary oil recovery and tertiary oil recovery. During the three stages of oil extraction, the water content of crude oil varies from none or low to high. According to statistics, the primary water content of crude oil currently produced around the world is a stable water-in-oil emulsion. With the increase of injection water in the secondary production and tertiary production, the water content of crude oil is also increasing day by day. [0003] The demulsification effect of demulsifier is closely related to the oil-water interfacial tension of crude oil emulsion. U...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G33/04C12P1/00
CPCC10G33/04C12P1/00
Inventor 万玉梅张晶
Owner 大庆奥斯贝森化工科技有限公司
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