CN102295950A - Chemical treatment method for aging oil - Google Patents
Chemical treatment method for aging oil Download PDFInfo
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- CN102295950A CN102295950A CN2011101614223A CN201110161422A CN102295950A CN 102295950 A CN102295950 A CN 102295950A CN 2011101614223 A CN2011101614223 A CN 2011101614223A CN 201110161422 A CN201110161422 A CN 201110161422A CN 102295950 A CN102295950 A CN 102295950A
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- oil
- aging oil
- ageing oil
- oxalic acid
- treatment method
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Abstract
The invention discloses a chemical treatment method for aging oil. The method specifically comprises the following steps: heating the aging oil to a temperature of 65 DEG C; adding the heated aging oil to a settling tank, and synchronously adding an emulsion breaker, sodium carbonate and oxalic acid to the settling tank, wherein the total weight of the sodium carbonate and the oxalic acid is 3 per mill of the weight of the aging oil, the odium carbonate reacts with the oxalic acid in the settling tank, the chemical equation of the reaction is as the following: Na2CO3+H2C2O4=Na2C2O2+CO2(gas)+H2O. According to the reaction, the stable emulsifying system is destroyed, such that the oil, the water and the impurities in the aging oil can be effectively separated, the mobility of the aging oil can be increased through the generated carbon dioxide. With the present invention, the aging oil having the water content of 40-50% can be dewatered into the aging oil having the water content less than 1.5%, such that the aging oil meets the transportation standard.
Description
Technical field
The present invention relates to a kind of ageing oil chemical treatment method.
Background technology
The oil field is in process of production because the needs of oil production technology, can add dissimilar chemical agents in the different stages, and the different chemical agent that adds can form the highly stable emulsification system of materialization structure under mechanical effect, and this oil with the highly stable emulsification system of materialization structure is called ageing oil.For many years, the disposal and utilization of ageing oil is the difficult problem in the field produces always.
Ageing oil mainly carries out preliminary treatment by means such as sedimentation filtrations in the oil field at present, is recycled to then oil system, and with a large amount of fresh crude oil blendings, just usually said ageing oil returns and mixes flow process.But the harm that the existence of ageing oil brings the oil field is: profit transition layer electroconductibility is strong, and electrical dehydrator is prone to tripping operation or directly causes industrial accident such as electrical dehydrator pole plate puncture, shortens service life of equipment; A large amount of profit transition layers have occupied the space of extraction liquid treatment facility, have reduced treatment capacity; Ageing oil return admixture big extraction liquid intractability, increased the pressure of sewage disposal and gathering system, problem such as can cause sewage quality to worsen to exceed standard, cause dehydration temperaturre to raise and the increase of treatment agent consumption, improved processing cost.
Summary of the invention
The object of the present invention is to provide a kind of ageing oil chemical treatment method, utilize the oil after this method is handled to reach outer defeated standard, reduce the pressure of disposing polluted water in oil and gathering system, solve problems such as the sewage quality deterioration exceeds standard, reduce potential safety hazard and environment hidden danger, have important environment and social benefit.
Chemical treatment method for aging oil among the present invention is that ageing oil is heated to 65 ℃, pass into again settling tank, when passing into settling tank, ageing oil adds demulsifier, also add simultaneously sodium carbonate and oxalic acid that gross weight is ageing oil 3/1000ths, chemical reaction takes place in described sodium carbonate and oxalic acid in described settling tank, Na
2CO
3+ H
2C
2O
4=Na
2C
2O
2+ CO
2↑+H
2O.
The temperature of described ageing oil in described slurry tank remains between 60～65 ℃.
The time that described ageing oil stops in described slurry tank is 15～20 hours.
The mass ratio of described yellow soda ash and oxalic acid is 53 to 45.
Ageing oil chemical treatment method among the present invention has fundamentally solved the problem of ageing oil dehydration difficulty, alleviates the pressure of disposing polluted water in oil and gathering system.
Embodiment
Chemical treatment method for aging oil among the present invention be ageing oil that multi-purpose station tank in the oil field is deposited and every day output the ageing oil of comprehensive water cut 40～50% mix, and with mixed ageing oil temperature raising to 65 ℃, deliver in the settling tank, before entering settling tank, ageing oil adds sodium carbonate and oxalic acid, wherein the total amount of sodium carbonate and oxalic acid dosing is 3/1000ths (weight) that enter settling tank ageing oil total amount, add simultaneously demulsifier, ratio between sodium carbonate and the oxalic acid is weight ratio 53 to 45, and chemical reaction: Na takes place in settling tank for sodium carbonate and oxalic acid
2CO
3+ H
2C
2O
4=Na
2C
2O
2+ CO
2↑+H
2O, the carbon dioxide that produces can reduce aging oil viscosity, this chemical reaction has destroyed emulsification system stable in the ageing oil, namely destroyed the state that ageing oil and water are consolidated and are difficult to separate, so that the water in the ageing oil, impurity can be separated fast, the time of ageing oil sedimentation in settling tank so can be with impurity, moisture from coming out between 15～20 hours, and reach the standard of crude oil exporting, namely moisture below 1.5%.To dewater at last ageing oil output slurry tank after up to standard, reheat is defeated outward.
In sum, the chemical treatment method for aging oil among the present invention and original method relatively have the following advantages:
From technology itself, fundamentally solved ageing oil and handled difficulty, the problem that the amount of stockpiling is big, fundamentally alleviate the pressure of sewage disposal and gathering system, solve problems such as the sewage quality deterioration exceeds standard, reduce potential safety hazard and environment hidden danger, have important environment and social benefit.
On economic benefit, processing cost is lower than the centrifugal additive method of Denging, also has very big economic competitiveness and magnetism.This reaction can destroy emulsification system stable in the ageing oil, makes oil, water, impurity effective separation in the ageing oil, and the carbon dioxide of generation can increase the ageing oil flowability.The upper strata oil reservoir is moisture after processing is lower than 1.5%, can reach outer defeated standard.
Claims (4)
1. chemical treatment method for aging oil, it is characterized in that, ageing oil is heated to 65 ℃, pass into again settling tank, when passing into settling tank, ageing oil adds demulsifier, also add simultaneously sodium carbonate and oxalic acid that gross weight is ageing oil 3/1000ths, chemical reaction takes place in described sodium carbonate and oxalic acid in described settling tank, Na
2CO
3+ H
2C
2O
4=Na
2C
2O
2+ CO
2↑+H
2O.
2. the described and ageing oil chemical treatment method according to claim 1 is characterized in that the temperature of described ageing oil in described slurry tank remains between 60～65 ℃.
3. the described and ageing oil chemical treatment method according to claim 1 is characterized in that the time that described ageing oil stops is 15～20 hours in described slurry tank.
4. the described and ageing oil chemical treatment method according to claim 1 is characterized in that the mass ratio of described yellow soda ash and oxalic acid is 53 to 45.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110161422.3A CN102295950B (en) | 2011-06-14 | 2011-06-14 | Chemical treatment method for aging oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110161422.3A CN102295950B (en) | 2011-06-14 | 2011-06-14 | Chemical treatment method for aging oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102295950A true CN102295950A (en) | 2011-12-28 |
| CN102295950B CN102295950B (en) | 2015-05-06 |
Family
ID=45356628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110161422.3A Active CN102295950B (en) | 2011-06-14 | 2011-06-14 | Chemical treatment method for aging oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102295950B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102925205A (en) * | 2012-11-22 | 2013-02-13 | 中国石油大学(华东) | Method for demulsifying thickened oil emulsion subjected to alkaline flooding |
| CN107474874A (en) * | 2017-09-04 | 2017-12-15 | 中国石油天然气股份有限公司 | A kind of aging oil treatment process |
| CN108048255A (en) * | 2017-12-28 | 2018-05-18 | 长沙善道新材料科技有限公司 | A kind of ageing oil cleaning agent and preparation method thereof |
| CN112226247A (en) * | 2020-10-22 | 2021-01-15 | 东北石油大学 | Ageing oil dehydration processing system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1687321A (en) * | 2005-04-26 | 2005-10-26 | 辽河石油勘探局 | Technological process of thermochemistry dehydrating for ultra thick oil |
| CN101993716A (en) * | 2009-08-11 | 2011-03-30 | 朱晓芳 | New process and equipment for dehydrating viscous oil |
-
2011
- 2011-06-14 CN CN201110161422.3A patent/CN102295950B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1687321A (en) * | 2005-04-26 | 2005-10-26 | 辽河石油勘探局 | Technological process of thermochemistry dehydrating for ultra thick oil |
| CN101993716A (en) * | 2009-08-11 | 2011-03-30 | 朱晓芳 | New process and equipment for dehydrating viscous oil |
Non-Patent Citations (3)
| Title |
|---|
| NAEL N.ZAKI等: "A Novel Process for Demulsification of Water-in-Crude Oil Emulsions byDense Carbon Dioxide", 《INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH》 * |
| 刘玉芹等: "利用热化学脱水技术处理老化油", 《油气田地面工程》 * |
| 王卓飞等: "新疆油田老化油处理工艺技术研究", 《内蒙古石油化工》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102925205A (en) * | 2012-11-22 | 2013-02-13 | 中国石油大学(华东) | Method for demulsifying thickened oil emulsion subjected to alkaline flooding |
| CN107474874A (en) * | 2017-09-04 | 2017-12-15 | 中国石油天然气股份有限公司 | A kind of aging oil treatment process |
| CN108048255A (en) * | 2017-12-28 | 2018-05-18 | 长沙善道新材料科技有限公司 | A kind of ageing oil cleaning agent and preparation method thereof |
| CN112226247A (en) * | 2020-10-22 | 2021-01-15 | 东北石油大学 | Ageing oil dehydration processing system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102295950B (en) | 2015-05-06 |
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Address after: 124013 Industrial Development Zone, Xinglongtai District, Liaoning, Panjin Applicant after: LIAONING HUAFU ENVIRONMENTAL ENGINEERING CO., LTD. Address before: 124013 Liaoning province Panjin City Beihuan Industrial Development Zone Xinglongtai District No. 18 North Street Applicant before: Liaoning Huafu Environment Engineering Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: LIAONING HUAFU ENVIRONMENT ENGINEERING CO., LTD. TO: LIAONING HUAFU ENVIRONMENTAL ENGINEERING CO., LTD. |
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