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Water-dispersible polymer crude oil viscosity reducer as well as preparation method and application thereof

A crude oil viscosity reducer and polymer technology, applied in the field of materials, can solve the problems of large application limitations, poor high temperature resistance, etc., and achieve good viscosity reduction effect, good emulsification and solubilization effect

Active Publication Date: 2019-11-22
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing polymer viscosity reducer has poor high temperature resistance, and its application is very limited

Method used

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  • Water-dispersible polymer crude oil viscosity reducer as well as preparation method and application thereof
  • Water-dispersible polymer crude oil viscosity reducer as well as preparation method and application thereof
  • Water-dispersible polymer crude oil viscosity reducer as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: the preparation of polymer viscosity reducer P1

[0029] In a beaker, weigh 12g acrylic acid, 1.8g styrene, 1.8g vinyl silicone oil (both ends are terminated with vinyl, 5wt% vinyl, viscosity is 1000cP, purchased from Jinan Xingfeilong Chemical Co., Ltd.), 14.4g Octadecyl methacrylate, 0.27g of 2,2'-azobisisobutyronitrile, and 15g of n-butanol as a solvent were stirred until completely dissolved and then transferred to the dropping funnel. Add 15g of n-butanol and 0.03g of 2,2'-azobisisobutyronitrile into the three-necked flask. At 90°C, add the mixed liquid dropwise into the flask, and control the dropwise addition of the liquid in the funnel within 1 hour. After the dropwise addition is completed, continue the constant temperature reaction for 2 hours. Raise the temperature to 100°C, add 0.15 g of initiator 2,2'-azobisisobutyronitrile, and continue the reaction at constant temperature for 1 h. Cool down to 60°C, add 14.83g of N,N-dimethylethanolamine, ...

Embodiment 2

[0030] Embodiment 2: the preparation of polymer viscosity reducer P2

[0031] In a beaker, weigh 12g acrylic acid, 1.8g styrene, 1.8g vinyl silicone oil (5% vinyl, viscosity is 1000cP, purchased from Jinan Xingfeilong Chemical Co., Ltd.), 28.8g octadecyl methacrylate, 0.27g 2,2'-azobisisobutyronitrile, 15g solvent n-butanol, stirred until completely dissolved, then transferred to the dropping funnel. Add 15g of n-butanol and 0.03g of 2,2'-azobisisobutyronitrile into the three-necked flask. At 90°C, add the mixed liquid dropwise into the flask, and control the liquid in the funnel to add dropwise for about 1 hour. After the dropwise addition is completed, continue heating at constant temperature for 2 hours. Raise the temperature to 100°C, add 0.15 g of initiator 2,2'-azobisisobutyronitrile, and continue the reaction at constant temperature for 1 hour. Cool down to 60°C, add 14.83g of N,N-dimethylethanolamine, and react for 1h. Cool to room temperature after the completion o...

Embodiment 3

[0032] Embodiment 3: the preparation of polymer viscosity reducer P3

[0033] In the three-necked flask, add 12g acrylic acid, 2.0g styrene, 1.8g vinyl silicone oil (5% vinyl, viscosity is 1000cP, purchased from Jinan Xingfeilong Chemical Co., Ltd.), 14.4g octadecyl methacrylate, 0.27g initiator azobisisobutyronitrile, 15g solvent n-butanol, stirred until completely dissolved and then transferred to the dropping funnel. Add 15 g of n-butanol and 0.03 g of initiator azobisisobutyronitrile into the three-necked flask. At 90°C, add the mixed liquid dropwise into the flask, and control the liquid in the funnel to add dropwise for about 1 hour. After the dropwise addition is completed, continue heating at constant temperature for 2 hours. Raise the temperature to 120°C, add 0.15 g of the initiator azobisisobutyronitrile again, and continue the reaction at constant temperature for 7 hours. Cool down to 60°C, add 14.83g of N,N-dimethylethanolamine, and react for 1h. Cool to room t...

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Abstract

The invention belongs to the field of materials, and discloses a water dispersible polymer crude oil viscosity reducer as well as a preparation method and application thereof. The preparation method of the water dispersible polymer crude oil viscosity reducer comprises the following steps: carrying out solution polymerization reaction on acrylic acid, styrene, a methacrylate monomer, vinyl silicone oil and an initiator in a solvent, and then adding an amine neutralizer to carry out neutralization reaction, thus obtaining the water dispersible polymer viscosity reducer, wherein the vinyl silicone oil is terminated by vinyl at two ends; the vinyl silicone oil with vinyl groups at two ends is added so that the viscosity reducer polymer can form a net structure, the water dispersible polymer crude oil viscosity reducer disclosed by the invention has resistance to high temperature, still has good emulsifying and solubilizing capacities on crude oil in a high-temperature environment, has a good viscosity reduction effect, and can be widely applied to the field of petrochemical engineering, in particular to high-temperature oil reservoir exploitation.

Description

technical field [0001] The invention belongs to the field of materials, in particular to a water-dispersed polymer crude oil viscosity reducer and its preparation method and application. Background technique [0002] Due to the large molecular weight and complex composition of heavy oil, the high temperature of heavy oil reservoirs leads to high viscosity and difficulty in production and transportation. The key to its production is to reduce viscosity and improve fluidity. As the largest and most economical chemical viscosity reduction technology, emulsification viscosity reduction technology has been widely used in heavy oil fields all over the world. The polymer viscosity reducer used in it is different from the traditional mixed emulsification viscosity reducer, which has the characteristics of difficult demulsification and dehydration of the produced heavy oil and large processing capacity. It has the advantages of small dosage, low cost and no impact on the processing o...

Claims

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Application Information

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IPC IPC(8): C08F283/12C08F212/08C08F220/06C08F220/18C09K8/588
CPCC08F283/124C09K8/588C09K8/882C08F212/08C08F220/06
Inventor 于丹凤黄建嘉许书瀚吴旭徐秀彬毛桃嫣张振强牛子晗
Owner GUANGZHOU UNIVERSITY
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