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Heavy oil viscosity reducer as well as preparation method and application thereof

A heavy oil viscosity reducer and heavy oil technology, applied in chemical instruments and methods, earth drilling, production fluids, etc., can solve the problem of low viscosity reduction rate, achieve low oil-water interfacial tension, good solubility, and wide application range wide effect

Active Publication Date: 2019-03-22
KARAMAY SANDA NEW TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the main disadvantage of non-ionic viscosity reducer is: it is mainly used in the viscosity reduction measures of heavy oil below 100 ℃, and the viscosity reduction rate is not high

Method used

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  • Heavy oil viscosity reducer as well as preparation method and application thereof
  • Heavy oil viscosity reducer as well as preparation method and application thereof
  • Heavy oil viscosity reducer as well as preparation method and application thereof

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preparation example Construction

[0029] The present invention also provides a preparation method for the heavy oil viscosity reducer described in the above technical solution, comprising the following steps:

[0030] Lauryl dimethyl benzyl ammonium chloride, isopropanol, nonylphenol polyoxyethylene ether, ethylene glycol monobutyl ether, disodium edetate, polyoxyethylene octylphenol ether and Mix with water to get thick oil viscosity reducer.

[0031] In the present invention, the order of mixing is preferably: dissolving disodium edetate and polyoxyethylene octylphenol ether in water first, then adding isopropanol, nonylphenol polyoxyethylene ether, ethyl alcohol Glycol Monobutyl Ether, Lauryl Dimethyl Benzyl Ammonium Chloride.

[0032] The present invention has no special limitation on the mixing method, and conventional mixing methods in the field can be used, such as stirring specifically. The present invention has no special limitation on the time and rate of the stirring, as long as the complete disso...

Embodiment 1

[0045] A thick oil viscosity reducer is composed by weight percentage: 2.5% of dodecyl dimethyl benzyl ammonium chloride, 3.4% of isopropanol, 6.7% of nonylphenol polyoxyethylene ether, ethylene glycol monobutyl ether 2.32%, disodium edetate 3%, polyoxyethylene octyl phenol ether 4%, and the balance of water.

[0046] Dissolve disodium edetate and polyoxyethylene octyl phenol ether in water first, then add isopropanol, nonylphenol polyoxyethylene ether, ethylene glycol monobutyl ether, dodecyl dimethyl Benzyl benzyl ammonium chloride, and stir evenly to obtain thick oil viscosity reducer.

[0047] See Table 1 for the evaluation results of the viscosity reduction test of the prepared heavy oil viscosity reducer under the condition of heavy oil viscosity of 1200mPa·S; see Table 2-Table 5 for the evaluation results of viscosity reduction test of the heavy oil viscosity of 50000mPa·S.

Embodiment 2

[0049]A thick oil viscosity reducer is composed by weight percentage: 6.5% of dodecyl dimethyl benzyl ammonium chloride, 2.4% of isopropanol, 0.315% of nonylphenol polyoxyethylene ether, ethylene glycol monobutyl ether 5.81%, disodium edetate 1%, polyoxyethylene octylphenol ether 7%, and the balance of water.

[0050] Dissolve disodium edetate and polyoxyethylene octyl phenol ether in water first, then add isopropanol, nonylphenol polyoxyethylene ether, ethylene glycol monobutyl ether, dodecyl dimethyl Benzyl benzyl ammonium chloride, and stir evenly to obtain thick oil viscosity reducer.

[0051] See Table 1 for the evaluation results of the viscosity reduction test of the prepared heavy oil viscosity reducer under the condition of heavy oil viscosity of 1200mPa·S; see Table 2-Table 5 for the evaluation results of viscosity reduction test of the heavy oil viscosity of 50000mPa·S.

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Abstract

The invention provides a heavy oil viscosity reducer as well as a preparation method and an application thereof, and belongs to the technical field of heavy oil recovery. The heavy oil viscosity reducer is prepared from components in percentage by weight as follows: 2.5%-6.5% of dodecyl dimethyl benzyl ammonium chloride, 2.4%-3.4% of isopropanol, 0.31%-6.7% of nonylphenoxypoly(ethyleneoxy)ethanol,2%-5.81% of 2-butoxyethanol, 1%-3% of EDTA-2Na, 4%-7% of 2-(2-[4-(1,1,3,3-tetramethylbutyl)phenoxy]ethoxy)ethanol and the balance of water. The heavy oil viscosity reducer has good solubility in water, a formed viscosity reducing solution is transparent, good in resistance to high temperature and high in viscosity reduction rate at low and high temperature, and the application range is wide.

Description

technical field [0001] The invention relates to the technical field of heavy oil exploitation, in particular to a heavy oil viscosity reducer and its preparation method and application. Background technique [0002] In recent years, with the continuous rise of international crude oil prices and the continuous reduction of thin oil resources, countries have begun to pay attention to the exploitation of heavy oil. However, due to the high viscosity, large flow resistance and even immobility of heavy oil in the oil layer, it is difficult to economically and effectively exploit it with conventional technology. [0003] The existing methods of viscosity reduction for heavy oil mainly include thinning method, thermal viscosity reduction method and chemical agent viscosity reduction method. Thinning and viscosity reduction method is to add a certain amount of thin oil to heavy oil to reduce the viscosity of heavy oil. Although this method is effective, it needs to consume a large ...

Claims

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Application Information

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IPC IPC(8): C09K8/584E21B43/22
CPCC09K8/584E21B43/16
Inventor 李荣聂俊博黄连华邓焱伟卢迎波文阳辛俊武高则彬贾剑平王彦斌马超何世全
Owner KARAMAY SANDA NEW TECH
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