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Ageing oil low-temperature demulsification viscosity reducer, preparation method thereof and application of viscosity reducer

A technology of aging oil and viscosity reducer, which is applied in the direction of chemical instruments and methods, mechanical equipment, drilling compositions, etc. It can solve the problem that the treatment effect is affected by the type and dosage of the agent, the aging oil treatment time is long, and the production capacity is improved. To solve problems such as operating costs, achieve the effect of reducing the dosage of chemicals, improving the efficiency of demulsification, and reducing the interfacial tension of oil and water

Active Publication Date: 2019-02-01
西安长庆化工集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to overcome above-mentioned deficiencies in prior art, provide a kind of chemical processing method of low-temperature aging oil, have overcome in prior art 1: the processing time of aging oil is long, processing effect is poor; 2: processing cost is high, processing The dehydration of the aging oil is not complete, the dehydration temperature is high, and the production and operation costs are increased; 3: The treatment dosage is large, the energy consumption is high, and the treatment effect is seriously affected by the type and dosage of the medicament, etc.

Method used

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  • Ageing oil low-temperature demulsification viscosity reducer, preparation method thereof and application of viscosity reducer

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specific Embodiment approach

[0023] It should be noted that the structures, proportions, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for the understanding and reading of those familiar with this technology, and are not used to limit the conditions for the implementation of the present invention , any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope covered by the technical content disclosed in the present invention without affecting the effect and purpose of the present invention. .

[0024] At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit this specification. The practicable scope of the invention and the change or adjustment of its relative relationship shall also be regarded as the practicable scope of the present invention without...

Embodiment 1

[0026] The invention discloses a low-temperature demulsification and viscosity-reducing agent for aging oil. The active ingredients include triethanolamine dodecylbenzenesulfonate, fatty alcohol polyoxyethylene ether, castor oil polyoxyethylene ether, ethylene glycol butyl ether, Hexaalkyltrimethylammonium bromide, sodium iron diethylenetriaminepentaacetate, oil-soluble comb polymer and methanol, wherein the weight percentage of each active ingredient is: triethanolamine dodecylbenzenesulfonate 5% ~15%, fatty alcohol polyoxyethylene ether 5%~10%, castor oil polyoxyethylene ether 15%~30%, ethylene glycol butyl ether 2%~8%, cetyltrimethylammonium bromide 5 %~15%, sodium iron diethylenetriaminepentaacetate 5%~15%, oil-soluble comb polymer 2%~8%, methanol 15%, water to make up the balance.

Embodiment 2

[0028] The invention discloses a low-temperature demulsification and viscosity-reducing agent for aging oil. The active ingredients include triethanolamine dodecylbenzenesulfonate, fatty alcohol polyoxyethylene ether, castor oil polyoxyethylene ether, ethylene glycol butyl ether, Hexaalkyltrimethylammonium bromide, sodium iron diethylenetriaminepentaacetate, oil-soluble comb polymer and methanol, wherein the weight percentage of each active ingredient is: triethanolamine dodecylbenzenesulfonate 5% ~15%, fatty alcohol polyoxyethylene ether 5%~10%, castor oil polyoxyethylene ether 15%~30%, ethylene glycol butyl ether 2%~8%, cetyltrimethylammonium bromide 5 %~15%, sodium iron diethylenetriaminepentaacetate 5%~15%, oil-soluble comb polymer 2%~8%, methanol 15%, water to make up the balance.

[0029] Preferably, the weight percent of each active ingredient is: triethanolamine dodecylbenzenesulfonate 5%~10%, fatty alcohol polyoxyethylene ether 8%~10%, castor oil polyoxyethylene ether...

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Abstract

The invention discloses an ageing oil low-temperature demulsification viscosity reducer, a preparation method thereof and an application of the viscosity reducer. The viscosity reducer comprises, in weight percent, 5%-15% of triethanolamine dodecyl benzene sulfonate, 5%-10% of fatty alcohol-polyoxyethylene ether, 15%-30% of castor oil polyoxyethylene ether, 2%-8% butyl cellosolve, 5%-15% of cetyltrimethyl ammonium bromide, 5%-15% of sodium hydrogen ferric diethylenetriaminepentaacetate, 2%-8% of oil-soluble comb polymers, 15% of methanol and the balance water.

Description

technical field [0001] The invention belongs to the technical field of chemical agents for oilfield exploitation, and in particular relates to a low-temperature demulsification and viscosity-reducing agent for aging oil, a preparation method and application thereof. Background technique [0002] In recent years, as most domestic oil fields have entered a high water cut period and the promotion and application of tertiary oil recovery technologies such as profile control and flooding agents and polymer injection flooding, each oil production plant has accumulatively produced about 10× 10 4 m 3 , in addition to conventional substances such as petroleum hydrocarbons, colloids, asphaltenes, waxes, solid grains, inorganic salts, and bacteria, it also contains polymers, surfactants for oil displacement, etc., which makes the treatment of aging oil difficult and costly. Even if the temperature is increased and the concentration of demulsifier is increased, the dehydration rate of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/584F17D1/17
CPCC09K8/584F17D1/17
Inventor 王伟波苗林张庆祝章文荣刘贵宾沈燕鸿李雅俐赵静潘谦宏杨赟程瑜华王俊松郑伟
Owner 西安长庆化工集团有限公司
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