Emulsion breaker for thick oil and preparation method and application of emulsion breaker

A demulsifier and heavy oil technology, which is applied in the field of demulsifier for heavy oil and its preparation, can solve the problems of slow crude oil dehydration process, poor demulsifier effect, and large product dosage, and achieves good demulsification effect, easy control, and production. low cost effect

Inactive Publication Date: 2017-01-04
合肥智慧殿机械设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing demulsifiers have the disadvantages of complex raw materials, high preparation costs, large product consumption, slow dehydration process of crude oil, poor demulsifier effect, etc.

Method used

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  • Emulsion breaker for thick oil and preparation method and application of emulsion breaker
  • Emulsion breaker for thick oil and preparation method and application of emulsion breaker
  • Emulsion breaker for thick oil and preparation method and application of emulsion breaker

Examples

Experimental program
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Effect test

Embodiment 1

[0022] In the embodiment of the present invention, a demulsifier for heavy oil is composed of the following raw materials in parts by weight: 1 part of cocoyl diethanolamine, 7 parts of maleic acid, 25 parts of zeolite, and 5 parts of polyglycerol fatty acid ester .

[0023] Maleic acid is mixed with deionized water with 4 times of its quality to make maleic acid solution; Cocoyl diethanolamine is mixed with 40% ethanol at a volume concentration of 5 times its quality to make cocoyl diethanolamine Diethanolamine solution. Grind the zeolite, pass through a 120-mesh sieve, add maleic acid solution, and stir at 80°C for 20 minutes, then raise the temperature to 125°C and heat and stir for 10 minutes to prepare mixture A. Mix polyglycerol fatty acid ester and cocoamide diethanolamine solution, heat and stir at 55° C. for 30 minutes, and prepare mixture B. Mix mixture A and mixture B, heat and stir at 165°C for 50 minutes, and then calcinate at 450°C for 4 hours to obtain a demul...

Embodiment 2

[0025] In the embodiment of the present invention, a demulsifier for heavy oil is composed of the following raw materials in parts by weight: 5 parts of cocoyl diethanolamine, 15 parts of maleic acid, 35 parts of zeolite, and 12 parts of polyglycerol fatty acid ester .

[0026] Maleic acid is mixed with deionized water with 4 times its mass to prepare a maleic acid solution; cocoamide diethanolamine is mixed with 40% ethanol with 5 times its mass to obtain a cocoamide diethanolamine solution. Grind the zeolite, pass through a 120-mesh sieve, add maleic acid solution, and stir at 80°C for 20 minutes, then raise the temperature to 125°C and heat and stir for 10 minutes to prepare mixture A. Mix polyglycerol fatty acid ester and cocoamide diethanolamine solution, and heat and stir at 55°C for 40 minutes to prepare mixture B. Mix mixture A and mixture B, heat and stir at 165°C for 60 minutes, and then calcinate at 450°C for 4 hours to obtain a demulsifier.

Embodiment 3

[0028] In the embodiment of the present invention, a demulsifier for heavy oil is composed of the following raw materials in parts by weight: 2 parts of cocoyl diethanolamine, 9 parts of maleic acid, 28 parts of zeolite, and 7 parts of polyglycerol fatty acid ester .

[0029] Maleic acid is mixed with deionized water with 4 times its mass to prepare a maleic acid solution; cocoamide diethanolamine is mixed with 40% ethanol with 5 times its mass to obtain a cocoamide diethanolamine solution. Grind the zeolite, pass through a 120-mesh sieve, add maleic acid solution, and stir at 80°C for 20 minutes, then raise the temperature to 125°C and heat and stir for 10 minutes to prepare mixture A. Mix polyglycerol fatty acid ester and cocoamide diethanolamine solution, and heat and stir at 55°C for 35 minutes to prepare mixture B. Mix mixture A and mixture B, heat and stir at 165°C for 55 minutes, and then calcinate at 450°C for 4 hours to obtain a demulsifier.

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Abstract

The invention discloses an emulsion breaker for thick oil and a preparation method and application of the emulsion breaker. The emulsion breaker is prepared from, by weight, 1-5 parts of coconut diethanolamide, 7-15 parts of cis-butenedioic acid, 25-35 parts of zeolite and 5-12 parts of polyglycerol fatty acid ester. The zeolite and a prepared cis-butenedioic acid solution are heated and stirred to prepare a mixture A; polyglycerol fatty acid ester and a prepared coconut diethanolamide solution are heated and stirred to prepare a mixture B; the mixture A and the mixture B are mixed, heated, stirred and calcined at high temperature. The prepared emulsion breaker has the remarkable effects of being good in emulsion breaking effect, small in use amount, resistant to high temperature and low temperature, large in dehydration amount, high in dehydration speed and the like. The adopted raw materials are easy to obtain, the preparation method is simple, operation is convenient and rapid, the production cost is low, and the emulsion breaker is suitable for large-scale production.

Description

technical field [0001] The invention relates to the field of oil field technology, in particular to a demulsifier for heavy oil and its preparation method and application. Background technique [0002] As the recoverable reserves of ordinary crude oil decrease year by year, heavy oil will become the main energy source in the 21st century, but it is difficult to exploit heavy oil, so it also increases the difficulty of heavy oil utilization. In the late 1990s, the output of oilfields gradually decreased. In order to maintain crude oil production, all oilfields adopted the method of increasing crude oil production by increasing water injection, resulting in a rapid increase in the water content of the oil well production fluid. stage of development. At the same time, the application of a large number of oil recovery additives in various processes also makes the production fluid composition of crude oil, especially heavy oil, more complex, so that the efficient and rapid demul...

Claims

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Application Information

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IPC IPC(8): C10G33/04
CPCC10G33/04
Inventor 许婷
Owner 合肥智慧殿机械设计有限公司
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