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Crude oil demulsifier

A technology of demulsifier and crude oil, which is applied in the direction of chemical dehydration/demulsification, etc. It can solve the problems of poor adaptability, corrosion, and low demulsification efficiency of crude oil, and achieve time-saving, excellent wettability, and good demulsification performance. Effect

Inactive Publication Date: 2015-04-01
TIANJIN DAGANG OILFIELD BINGANG GRP BOHONG PETROLEUM CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing demulsifiers on the market have problems such as poor adaptability to crude oil, low demulsification efficiency, and easy corrosion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] A kind of crude oil demulsifier, it is characterized in that, comprises following component, and its percentage by weight is polyoxyethylene ether type drying agent 40%, wetting agent 15%, sodium lauryl sulfate 5%, ammonium chloride 8%, Polyether modified trisiloxane 12%, methanol 20%. The polyoxyethylene ether dry agent is polyoxysilane-polyoxyethylene polyoxypropylene lauryl ether and propylene glycol polyoxypropylene polyoxyethylene ether, and its weight percentage is 45%:55%.

Embodiment 2

[0013] A kind of crude oil demulsifier, it is characterized in that, comprises following component, and its percentage by weight is polyoxyethylene ether type drying agent 35%, wetting agent 15%, sodium lauryl sulfate 10%, ammonium chloride 7%, Polyether modified trisiloxane 8%, methanol 25%. The polyoxyethylene ether dry agent is polyoxysilane-polyoxyethylene polyoxypropylene lauryl ether and propylene glycol polyoxypropylene polyoxyethylene ether, and its weight percentage is 55%:45%.

Embodiment 3

[0015] A kind of crude oil demulsifier, it is characterized in that, comprises following component, and its percentage by weight is polyoxyethylene ether type drying agent 35%, wetting agent 15%, sodium lauryl sulfate 10%, ammonium chloride 7%, Polyether modified trisiloxane 8%, methanol 25%. The polyoxyethylene ether dry agent is polyoxysilane-polyoxyethylene polyoxypropylene lauryl ether and propylene glycol polyoxypropylene polyoxyethylene ether, and its weight percentage is 60%:40%.

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Abstract

The invention provides a crude oil demulsifier which is characterized by comprising the following components by weight, 30-40% of a polyoxyethylene ether dry agent, 5-15% of a wetting agent, 5-10% of lauryl sodium sulfate, 4-10% of ammonium chloride, 6-12% of polyether modified trisiloxane and 20-30% of methanol. The polyoxyethylene ether dry agent is polysiloxane-polyoxyethylene polyoxypropylene dodecanol ether and propanediol poly-oxypropylene polyoxyethylene ether. The polyoxyethylene ether crude oil demulsifier has good surface properties, permeability and excellent wettability, can be quickly dispersed in crude oil to replace and neutralize an emulsifier originally on oil-water interface to form an unstable adsorption film for change of wettability of particles, so that water molecules connected by a surface active agent can rapidly agglomerate, the polyoxyethylene ether crude oil demulsifier has has good demulsification performance on crude oil emulsion, and can save time, manpower and material resources.

Description

technical field [0001] The invention relates to a crude oil demulsifier and 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. In order to solve the problems in the process of oil and gas gathering and transportation, a large amount of chemical agents must be used. The chemicals used in the process of oil and gas gathering and transpor...

Claims

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Application Information

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IPC IPC(8): C10G33/04
CPCC10G33/04
Inventor 胡玉国梁海臣李靖张冠洲张有强张凤跃肖劲松孙红桃李东
Owner TIANJIN DAGANG OILFIELD BINGANG GRP BOHONG PETROLEUM CHEM
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