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Extra-heavy oil functional demulsifier as well as preparation and application thereof

A technology of extra-heavy oil and demulsifier, which is applied in the field of extra-heavy oil functional demulsifier and its preparation and application. It can solve the problems of inability to obtain a stable electric field and high investment in equipment, and achieve improved demulsification effect, low demulsification temperature, Effects that change surface properties

Active Publication Date: 2014-01-15
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the advantage of high demulsification efficiency, but the equipment investment is high, and the water must be reduced to a certain extent before the raw oil enters the equipment (generally, thermochemical demulsification is performed first), otherwise a stable electric field cannot be obtained

Method used

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  • Extra-heavy oil functional demulsifier as well as preparation and application thereof
  • Extra-heavy oil functional demulsifier as well as preparation and application thereof
  • Extra-heavy oil functional demulsifier as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The components and mass fraction of the functional demulsifier are:

[0039] A. Polyethylene polyamine polyoxypropylene polyoxyethylene ether (industrial product): 10%;

[0040] B, phenolic resin polyoxypropylene polyoxyethylene ether (industrial product): 40%;

[0041] C. Clear water type demulsifier (industrial product): 10%;

[0042] D, diethylene glycol butyl ether (industrial product): 5%;

[0043] E. Solid particle surface modifier: 5%;

[0044] F: Benzene (industrial product): 30%.

[0045] The demulsification effect of this functional demulsifier on different heavy oils is shown in the table below:

[0046]

Embodiment 2

[0048] The components and mass fraction of the functional demulsifier are:

[0049] A. Polyethylene polyamine polyoxypropylene polyoxyethylene ether (industrial product): 10%;

[0050] B, phenolic resin polyoxypropylene polyoxyethylene ether (industrial product): 35%;

[0051] C. Water-type demulsifier (industrial product): 5%;

[0052] D, ethanol (industrial product): 5%;

[0053] E, solid particle surface modifier (self-made): 10%;

[0054] F: methanol (industrial product): 35%.

[0055] The demulsification effect of this functional demulsifier on different heavy oils is shown in the table below:

[0056]

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Abstract

The invention relates to an extra-heavy oil functional demulsifier as well as preparation and application thereof. The extra-heavy oil functional demulsifier comprises the following components in percentages by weight: 10-15% of polyethylene polyamine polyoxyethylene polyoxypropylene, 30-40% of phenolic resin polyoxyethylene polyoxypropylene ether, 10-15% of water demulsifier, 5-10% of organic small molecular auxiliary agent, 5-10% of solid particle surface modifier and the balance of solvent. In the invention, the synergistic action between demulsifiers is utilized, a plurality of demulsifiers are cross-linked and compounded, and the functional auxiliary agent is added, therefore, the dehydration effect of an extra-heavy oil is effectively improved, the oil content of dehydrated sewage is reduced, and the external discharging standard is achieved.

Description

technical field [0001] The invention relates to an oil-water separation demulsifier formula suitable for Saudi Arabian heavy oil with a viscosity above 10000 mPa.s and its preparation and application. Background technique [0002] Demulsifier is a chemical used in a large amount in the petroleum industry, mainly used in oil field surface production and gathering and transportation. Extra heavy oil has the characteristics of high density, high viscosity, high asphaltene and colloid content, etc. Asphaltene and colloid are natural emulsifiers of crude oil and an important reason for the stability of crude oil emulsion; at the same time, in the process of heavy oil production, Various oil recovery additives and chemicals for oil-water treatment circulate in the whole system, the oil-water emulsification characteristics of the produced fluid are becoming more and more complex, and the chemical properties have also undergone great changes. From the appearance of the produced flu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G33/04
Inventor 樊玉新胡新玉欧阳建利刘金河杨普江
Owner PETROCHINA CO LTD
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