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Composite crude oil demulsifying agent

A technology of crude oil demulsifier and parts by weight, which is applied in the direction of chemical dehydration/demulsification, etc., to achieve the effects of saving time, good demulsification performance, good surface performance and penetration ability

Active Publication Date: 2011-10-26
石家庄卫科生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult for a single demulsifier to fully meet these requirements

Method used

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Examples

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Effect test

Embodiment 1

[0015] A kind of composite crude oil demulsifier of the present invention, it is made up of following material:

[0016] Polyoxypropylene polyoxyethylene stearyl ether 30kg, propylene glycol polyoxypropylene polyoxyethylene ether 20kg, sodium lauryl sulfate 10kg, ammonium chloride 15kg, polyether modified trisiloxane 10kg, methanol 8kg

Embodiment 2

[0018] A kind of composite crude oil demulsifier of the present invention, it is made up of following material:

[0019] Polyoxypropylene polyoxyethylene stearyl ether 25kg, propylene glycol polyoxypropylene polyoxyethylene ether 15kg, sodium lauryl sulfate 7kg, ammonium chloride 8kg, polyether modified trisiloxane 8kg, methanol 5kg

Embodiment 3

[0021] A kind of composite crude oil demulsifier of the present invention, it is made up of following material:

[0022] Polyoxypropylene polyoxyethylene stearyl ether 35kg, propylene glycol polyoxypropylene polyoxyethylene ether 25kg, sodium lauryl sulfate 15kg, ammonium chloride 20kg, polyether modified trisiloxane 16kg, methanol 10kg

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PUM

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Abstract

The invention relates to a composite crude oil demulsifying agent, which comprises the following materials in parts by weight: 24-35 parts of polyoxypropylene polyoxyethylene octadecyl alcohol, 15-25 parts of propanediol polyoxypropylene polyoxyethylene ether, 7-15 parts of sodium lauryl sulfate, 8-20 parts of ammonium chloride, 8-16 parts of polyether-modified trisiloxane, and 5-10 parts of methanol. The composite crude oil demulsifying agent provided by the invention has good surface activity, wetting property and enough flocculation and agglutination capacity, can rapidly reach the oil-water interface to replace natural interfacial active substances to form a new unstable oil-water interfacial film, and has good performance of demulsifying crude oil emulsion. Also, the composite crude oil demulsifying agent saves time, manpower and material resources, and can be widely applied in crude oil extraction, crude oil refining and other fields.

Description

technical field [0001] The invention relates to a composite crude oil demulsifier, which belongs to the technical field of oilfield chemical additives. Background technique [0002] With the development of the world's petroleum industry, the amount of oil production is increasing day by day, which makes the amount of crude oil emulsion increase day by day. Especially after water injection is used to enhance oil recovery, the water content of crude oil increases significantly, and most of the crude oil is extracted in the form of oil-water emulsion. . Crude oil production fluid contains a large amount of water and inorganic salts, which brings great difficulties to oil and gas gathering and transportation and crude oil refining, so dehydration and desalination must be carried out. [0003] Demulsifier is a kind of surface active substance, which can destroy the structure of emulsified liquid, so as to achieve the purpose of separating the phases in the emulsion. Crude oil d...

Claims

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Application Information

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IPC IPC(8): C10G33/04
Inventor 吴海霞王奎涛高金龙鲁楠邢士辉夏立雷罗洋
Owner 石家庄卫科生物科技有限公司
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