CN102295950B - Chemical treatment method for aging oil - Google Patents
Chemical treatment method for aging oil Download PDFInfo
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- CN102295950B CN102295950B CN201110161422.3A CN201110161422A CN102295950B CN 102295950 B CN102295950 B CN 102295950B CN 201110161422 A CN201110161422 A CN 201110161422A CN 102295950 B CN102295950 B CN 102295950B
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- oil
- aging oil
- aging
- oxalic acid
- sodium carbonate
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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 chemical treatment method for aging oil.
Background technology
Oil field is in process of production due to the needs of oil production technology, dissimilar chemical agent can be added in the different stages, and the different chemical agent added can form the highly stable emulsification system of physico-chemical structure under mechanical action, this oil with the highly stable emulsification system of physico-chemical structure is called ageing oil.For many years, the disposal and utilization of ageing oil is the difficult problem in field produces always.
In current oil field, ageing oil carries out pre-treatment mainly through means such as sedimentation filtration, is then recycled to oil system, and with a large amount of fresh crude oil blending, namely usually said ageing oil returns mixes flow process.But the existence of ageing oil to the harm that oil field is brought is: profit transition layer electroconductibility is strong, easily there is tripping operation or directly cause the industrial accidents such as electrical dehydrator pole plate punctures in electrical dehydrator, shortens service life of equipment; A large amount of profit transition layers occupy the space of Produced Liquid treatment facility, reduce treatment capacity; Ageing oil returns to mix and increases Produced Liquid intractability, increases the pressure of sewage disposal and gathering system, and sewage quality can be caused to worsen problems such as exceeding standard, causes dehydration temperaturre to raise and the increase for the treatment of agent consumption, improves processing cost.
Summary of the invention
The object of the present invention is to provide a kind of chemical treatment method for aging oil, utilize the oil after the method process can reach outer defeated standard, reduce the pressure of disposing polluted water in oil and gathering system, solve sewage quality and worsen problems such as exceeding standard, reduce potential safety hazard and environment hidden danger, there is important environmental and social benefits.
Chemical treatment method for aging oil in the present invention is that ageing oil is heated to 65 DEG C, pass into slurry tank again, emulsion splitter is added while ageing oil passes into slurry tank, also add sodium carbonate and oxalic acid that gross weight is ageing oil 3/1000ths simultaneously, chemical reaction is there is, Na in described sodium carbonate and oxalic acid in described slurry tank
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 DEG C.
The time that described ageing oil stops in described slurry tank is 15 ~ 20 hours.
The mass ratio of described sodium carbonate and oxalic acid is 53 to 45.
Chemical treatment method for aging oil in the present invention fundamentally solves the problem of dehydrating aging difficulty, alleviates the pressure of disposing polluted water in oil and gathering system.
Embodiment
Chemical treatment method for aging oil in the present invention be ageing oil that joint station tank in oil field is deposited and every day output the ageing oil mixing of comprehensive water cut 40 ~ 50%, and mixed ageing oil is lifted temperature to 65 DEG C, deliver in slurry tank, sodium carbonate and oxalic acid is added before ageing oil enters slurry tank, wherein the total amount of sodium carbonate and oxalic acid dosing is 3/1000ths (weight) entering slurry tank ageing oil total amount, add emulsion splitter simultaneously, ratio between sodium carbonate and oxalic acid is weight ratio 53 to 45, and sodium carbonate and oxalic acid, in slurry tank, chemical reaction occurs: Na
2cO
3+ H
2c
2o
4=Na
2c
2o
2+ CO
2↑+H
2o, the carbon dioxide produced can reduce aging oil viscosity, this chemical reaction destroys emulsification system stable in ageing oil, namely destroy ageing oil and water to be consolidated the state being difficult to be separated, make the water in ageing oil, impurity energy sharp separation out, impurity, water, between 15 ~ 20 hours, so can be separated by the time of ageing oil sedimentation in slurry tank, and reach the standard of crude oil exporting, namely moisture below 1.5%.Finally by dehydration up to standard after ageing oil export slurry tank, reheat outer defeated.
In sum, the chemical treatment method for aging oil in the present invention and original Measures compare have the following advantages:
From technology itself, fundamentally solve ageing oil process difficult, the problem that the amount of stockpiling is large, fundamentally alleviate the pressure of sewage disposal and gathering system, solve sewage quality and worsen problems such as exceeding standard, reduce potential safety hazard and environment hidden danger, there is important environmental and social benefits.
From economic benefit, processing cost waits additive method lower than centrifugal, also has very large economic competitiveness and magnetism.This reaction can destroy emulsification system stable in ageing oil, and the oil in ageing oil, water, impurity are effectively separated, and the carbonic acid gas of generation can increase ageing oil mobility.After process, upper strata oil reservoir is moisture lower than 1.5%, can reach outer defeated standard.
Claims (2)
1. a chemical treatment method for aging oil, it is characterized in that, ageing oil is heated to 65 DEG C, pass into slurry tank again, temperature in described slurry tank remains between 60 ~ 65 DEG C, while ageing oil passes into slurry tank, add emulsion splitter, also adds the sodium carbonate that gross weight is ageing oil 3/1000ths and oxalic acid simultaneously, chemical reaction is there is, Na in described sodium carbonate and oxalic acid in described slurry tank
2cO
3+ H
2c
2o
4=Na
2c
2o
2+ CO
2↑+H
2o, the time that described ageing oil stops in described slurry tank is 15 ~ 20 hours.
2. chemical treatment method for aging oil according to claim 1, is characterized in that, the mass ratio of described sodium carbonate 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 CN102295950A (en) | 2011-12-28 |
| CN102295950B true 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 |
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| CN (1) | CN102295950B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102925205B (en) * | 2012-11-22 | 2015-09-09 | 中国石油大学(华东) | The method of rear viscous crude emulsion breaking is driven for alkali |
| 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 (4)
| Title |
|---|
| Engineering Chemistry Research》.2003, * |
| Nael N.Zaki等.A Novel Process for Demulsification of Water-in-Crude Oil Emulsions byDense Carbon Dioxide.《Industrial & * |
| 利用热化学脱水技术处理老化油;刘玉芹等;《油气田地面工程》;20031231;第7页 * |
| 新疆油田老化油处理工艺技术研究;王卓飞等;《内蒙古石油化工》;20101031(第19期);第149-150页 * |
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| Publication number | Publication date |
|---|---|
| CN102295950A (en) | 2011-12-28 |
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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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