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Treatment method of ageing oil

A technology for aging oil and oxidation treatment, which is applied in chemical dehydration/demulsification, treatment of hydrocarbon oil, petroleum industry, etc. It can solve problems such as the influence of aging oil, achieve enhanced fluidity, enhance oil-water separation effect, and reduce processing difficulty Effect

Inactive Publication Date: 2017-12-15
PETROCHINA CO LTD +1
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Problems solved by technology

[0003] The present invention aims to overcome the problem that the existing process in the background technology cannot fundamentally change the form of aged oil and still cause serious impact on subsequent production, and provides a method for treating aged oil

Method used

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with specific embodiments:

[0023] A field test of the aged oil treatment was carried out at the La 400 sewage station of the sixth oil production plant in Daqing. The main body of the aged oil is water and oil, which account for more than 98% of the total composition. The content of solid impurities is very small, less than 2% of the total composition; chlorine dioxide is preferred. It is an oxidant. It is determined that when the concentration of the agent is 3.5‰, the reaction temperature is 45~55℃, and the reaction time is 3~5h, the treatment effect of aged oil is the best, and its dehydration rate reaches 99.45%; for the treated aged oil The composition is qualitatively analyzed: the physical viscosity of the treated aging oil is reduced from 48.9cp to 40.8cp, the iron content is reduced from 0.0062% to 0.0023%, and the sulfide is reduced from 3.88% to 0.024%. At the same time, the indoor analog ele...

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Abstract

The invention relates to a treatment method of ageing oil, and mainly solves the problem that the existing process cannot fundamentally change the condition of serious influence caused by the ageing oil form on the subsequent production. The treatment method is characterized by comprising the following steps of (1) determining the ingredients of the ageing oil: performing qualitative analysis on the ageing oil; (2) selecting an oxidizing agent for treating the ageing oil, and performing oxidation treatment on the ageing oil; (3) detecting the performance indexes of the ageing oil treated in the step (2): performing qualitative analysis on the treated ageing oil ingredients and performing qualitative analysis on the influence of the treated ageing oil on an electric dehydrator. The treatment method of the ageing oil has the advantages that the physical property of the ageing oil can be fundamentally changed; the oil and water separation effect of the ageing oil is enhanced.

Description

Technical field [0001] The invention relates to the technical field of oilfield surface engineering treatment, in particular to a treatment method for aging oil. Background technique [0002] At present, the main method used in oilfields to treat aging oil is thermochemical precipitation. Heat the aging oil to a higher temperature and add a demulsifier to achieve the purpose of oil-water separation. The disadvantages of this process are long processing time, large operating energy consumption, high dosage of medicaments, and the treatment effect depends on the screening of medicaments. The form of aging oil is fundamentally changed, and the internal polymers, metal organic salts, organic acids, iron-containing impurities (FeS) and natural emulsifiers cannot be effectively removed, which still has a serious impact on subsequent production. Summary of the invention [0003] The present invention overcomes the problem that the existing technology in the background art cannot fundame...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G33/04C10G27/02
CPCC10G33/04C10G27/02C10G2300/1003C10G2300/202
Inventor 孟令尊李兴国张建军潘旭印重金胜男
Owner PETROCHINA CO LTD
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