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A kind of super heavy oil demulsifier and preparation method thereof

A crude oil demulsifier and demulsifier technology, applied in the field of super heavy oil demulsifiers, can solve the problems of unsatisfactory demulsification, achieve clear and smooth oil-water interface, facilitate coalescence and flocculation, and have good synergy

Active Publication Date: 2020-04-03
盘锦富隆化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN102373077A discloses a functional demulsifier for extra-heavy oil, which effectively improves the dehydration effect of extra-heavy oil, and is only suitable for oil-water separation of Saudi heavy oil with a viscosity of 10000mPa.s; patent CN 102746470A discloses cycloalkyl extra-thick Oil demulsifier, suitable for demulsification of naphthenic heavy oil in Karamay area, "Fine and Specialty Chemicals" No. 12, 2005 disclosed a clear water type special (ultra) thick demulsifier, which is suitable for Liaohe Lengjia and special Oil company's oil has a good demulsification effect, but it is not ideal for demulsification of super heavy oil in Shuguang Oil Production Plant

Method used

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  • A kind of super heavy oil demulsifier and preparation method thereof
  • A kind of super heavy oil demulsifier and preparation method thereof
  • A kind of super heavy oil demulsifier and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The preparation of demulsifier DMPRA comprises the following steps

[0057] 1. Preparation of reverse oil head DP type crude oil demulsifier:

[0058] 1.1 Accurately weigh 1 part of bisphenol fluorene and 0.25% potassium hydroxide in total and transfer them into the reaction kettle, heat up and stir, keep warm for 30-45 minutes when the temperature reaches 225-230°C, and then turn on the vacuum (vacuum pressure≤- 0.09MPa) dehydration, the temperature is controlled at 225-230°C, the dehydration time is 35-40 minutes, after the dehydration is completed, 16 parts of ethylene oxide is continuously introduced, the reaction temperature is 225-230°C, and the reaction pressure is 0.15MPa-0.4 MPa; after passing through the ethylene oxide, continue to maintain the reaction temperature, when the pressure drops below 0.02MPa, mature for 30-45 minutes, cool down to 90-100°C and discharge to obtain the demulsifier intermediate DP01.

[0059] 1.2 Accurately weigh 1 portion of DP-1 an...

Embodiment 2

[0082] The preparation of demulsifier DMPRB comprises the following steps

[0083] 1. Preparation of reverse oil head DP type crude oil demulsifier:

[0084] 1.1 Accurately weigh 1 part of bisphenol fluorene and 0.2% potassium hydroxide in total and transfer them into the reaction kettle, heat up and stir, keep warm for 30-45 minutes when the temperature reaches 225-230°C, and then turn on the vacuum (vacuum pressure≤- 0.09MPa) dehydration, the temperature is controlled at 225-230°C, the dehydration time is 35-40 minutes, after the dehydration is completed, 18 parts of ethylene oxide is continuously introduced, the reaction temperature is 225-230°C, and the reaction pressure is 0.15MPa-0.4 MPa; after passing through the ethylene oxide, continue to maintain the reaction temperature, when the pressure drops below 0.02MPa, mature for 30-45 minutes, cool down to 90-100°C and discharge to obtain the demulsifier intermediate DP03.

[0085] 1.2 Accurately weigh 1 portion of DP03 and...

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Abstract

The invention discloses an ultra-thick oil demulsifier and a preparation method. The ultra-thick oil demulsifier is prepared from the following components in percentage by weight: 40 to 65% of reverse head oil DP type crude oil demulsifier, 10 to 40% of mixed oil head MU type crude oil demulsifier, 20 to 45% of positive oil head PFA type rosin modified phenol-amine crude oil demulsifier, and 1 to 5% of functional negative ion biological surface activating agent (rhamnose ester); the three types of demulsifier and the biological surfactant are uniformly mixed according to a certain ratio, so as to obtain the demulsifier provided by the invention. The ultra-thick oil demulsifier has the characteristics that the structure is diversified, the mutual compounding property and synergistic property are very strong, and the ultra-thick oil demulsifier is applied into ultra-thick oil of Shuguang oil production plant in Liaohe oil field; the demulsifying efficiency is high, the stability is good, the water and oil are clear after demulsifying, the oil and water interface is clear and smooth, and the like.

Description

technical field [0001] The invention relates to the technical field of oil field chemical preparations, in particular to a super heavy oil demulsifier and a preparation method thereof. Background technique [0002] Crude oil (CRUDE OIL) is the main energy source in the world today, and it occupies a very important position in the national economy, so it is also called "black gold". According to different standards, the classification of crude oil is also different. Among them, there is a kind of heavy oil with high viscosity and high density. According to the Chinese heavy oil classification standard proposed by Chief Engineer Liu Wenwen, there is a kind of super heavy oil (natural asphalt) whose dynamic viscosity (50 ℃)≥50000mPa.s, density (20℃)>0.98g / cm 3 . [0003] Studies by Strausz et al. have shown that asphaltene molecules contain 4-10 fused aromatic systems, and the aromatic rings are linked with rich aliphatic structural units. The three-dimensional spatial st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G33/04C08G65/28C08G65/328C08G65/332
CPCC08G65/2612C08G65/2624C08G65/328C08G65/3324C10G33/04
Inventor 胡新生胡毓桓王方郑百清
Owner 盘锦富隆化工有限公司
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