CN105295987B - The method that oil recovery polymer is removed from crude oil - Google Patents
The method that oil recovery polymer is removed from crude oil Download PDFInfo
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- CN105295987B CN105295987B CN201510678798.XA CN201510678798A CN105295987B CN 105295987 B CN105295987 B CN 105295987B CN 201510678798 A CN201510678798 A CN 201510678798A CN 105295987 B CN105295987 B CN 105295987B
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- crude oil
- oil
- barium sulfate
- polymer
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Abstract
The present invention relates to former oil treatment process, specifically a kind of method that oil recovery polymer is removed from crude oil, the method is that barium sulfate microballoon is added in crude oil under conditions of stirring, then blends of crudes is placed as radiated in micro-wave oven, refilter, so that it may the de- poly- crude oil of the oil recovery polymer that is removed.It is an object of the invention to be directed to the crude oil obtained when polymer flooding when ground is demulsified and conveys, cause the problem that heat exchanger efficiency is remarkably decreased, there is provided a kind of method that oil recovery polymer is removed from crude oil.The present invention not only can remove the oil recovery polymer in crude oil, and step is simple, it is easy to accomplish, and barium sulfate microballoon used is reusable, reduces cost of the invention.
Description
Technical field
The present invention relates to former oil treatment process, specifically a kind of method that oil recovery polymer is removed from crude oil.
Background technology
Water-soluble polymer forms slug because of it in oil reservoir, and Reservoir Crude Oil can be driven away under pressure difference promotion, makes tar productivity
It is improved.As high water-cut reservoir is on the increase, hydrophobic associated water-soluble polymer obtains extensively should as oil recovery polymer
With.But, because the hydrophobic property of oil recovery polymer makes it remained in crude oil, when crude oil is demulsified and conveys on ground
When, cause to be separated out in heater surfaces and crust, cause heat exchanger efficiency to be remarkably decreased.
In the prior art, the temperature that traditional breaking method needs is higher, and step is complicated, and it is relatively costly to be demulsified.
The content of the invention
The present invention is made improvements for the problem that above-mentioned prior art is present, and polymer is worked as it is an object of the invention to be directed to
The crude oil that drive is obtained causes the problem that heat exchanger efficiency is remarkably decreased when ground is demulsified and conveys, there is provided one kind is from crude oil
The method for removing oil recovery polymer.
To achieve the above object, the method that oil recovery polymer is removed from crude oil designed by the present invention, its special character
It is to comprise the following steps：
Step one：The crude oil that stirring polymer flooding is obtained；
Step 2：Under conditions of stirring to the crude oil in add the barium sulfate microballoon that particle diameter is 2~5mm, per quality
It is barium sulfate microballoon described in 10~20g for 100g crude oil adds quality, obtains the blends of crudes containing barium sulfate microballoon；
Step 3：Blends of crudes described in step 2 is stirred 2~5 minutes；
Step 4：The blends of crudes that will be obtained in step 3 is placed in the micro-wave oven that frequency is 2450MHz, in power
To be radiated 1 minute under conditions of 40w, blends of crudes after being radiated；
Step 5：Blends of crudes carries out vacuum filter, isolated filtrate and filter after the radiation that will be obtained in step 4
Cake, the filtrate is to take off poly- crude oil, and the filter cake is contained within the barium sulfate microballoon that oil recovery polymer is mainly adhered on surface；
Step 6：To water is added in the filter cake obtained in step 5, it is stirred, filters, the sulfuric acid of isolated regeneration
Barium microballoon and the filtrate containing oil recovery polymer.
The method that oil recovery polymer is removed from crude oil of the present invention, step is simple, it is easy to accomplish, will can be polymerized
Oil recovery polymer removal in crude oil obtained by thing drive.The present invention solve the crude oil containing oil recovery polymer ground demulsification and
Cause heat exchanger surface to separate out crust during conveying, make the problem that heat exchanger efficiency is remarkably decreased.And it is used in the present invention
Barium sulfate is micro- by after the filtering of step 6, filtering eliminates the oil recovery polymer that adhering on surface, thus, the regeneration for obtaining
Barium sulfate microballoon can be reused so that cost reduction of the invention.
Brief description of the drawings
Fig. 1 is schematic flow sheet of the invention.
Specific embodiment
The performance that the invention will now be described in detail with reference to the accompanying drawings, but it does not constitute limitation of the invention, only does
Citing.Simultaneously by explanation, advantages of the present invention will become clearer and be readily appreciated that.
In laboratory conditions, the crude oil to Dagang Oilfield is removed the experiment of oil recovery polymer, comprises the following steps：
Step one：At ambient temperature, Dagang Oilfield crude oil containing hydrophobic associated water-soluble polymer 100g is taken, by the matter
Measure in adding volume for the beaker of 500ml for 100g crude oil, crude oil is stirred.
Step 2：It is the barium sulfate microballoon of 4mm that particle diameter is added under conditions of stirring, adds the quality of barium sulfate microballoon
It is 15g, obtains the blends of crudes containing barium sulfate microballoon.
Step 3：The blends of crudes that will be obtained in step 2 is stirred 2 minutes.
Step 4：The blends of crudes that will be obtained in step 3 is placed on the micro-wave oven that frequency is 2450MHz together with beaker
In, the blends of crudes after radiation under conditions of power is 40w is radiated for 1 minute.
Step 5：Blends of crudes is filtered under conditions of vacuum after the radiation that will be obtained in step 4, is separated
It is the filter cake of 18g to poly- crude oil and quality is taken off.The barium sulfate microballoon that surface attachment has hydrophobic associated water-soluble polymer is trapped in
In filter cake.
Step 6：It is the water of 200ml that volume is added in the filter cake that step 5 is obtained, and is stirred, then filtered point
From obtaining black sulfuric acid barium microballoon and filtrate containing hydrophobic associated water-soluble polymer.The quality of the black sulfuric acid barium microballoon
It is 15g, it is 176mPa.s that the filtrate uses rotational viscometer measurement to obtain viscosity.
Step 7：The de- poly- crude oil that will be obtained in step 5 replaces the Dagang Oilfield in step one to contain hydrophobic associated water-soluble
Polymer crude oil, the quality that step 6 is obtained replaces the barium sulfate microballoon in step 2 for the black sulfuric acid barium microballoon of 15g.Weight
To step 6, it is the filtrate of 1.6mPa.s to obtain secondary recycling barium sulfate microballoon 15g and viscosity to multiple step one.
From step 7, the quality of secondary recycling barium sulfate microballoon is still 15g, illustrates that barium sulfate microballoon is removing original
It is not lost in the experiment of oily oil recovery polymer, so the barium sulfate microballoon for obtaining is reusable.Obtained in step 7
Filtrate viscosity well below the filtrate viscosity in step 6, thus can be explained, Dagang Oilfield containing hydrophobic associated water-soluble be polymerized
Thing crude oil is by step once the effect that the removal oil recovery polymer from crude oil is can reach to step 5.
In a laboratory environment, the examination of oil recovery polymer is removed to the crude oil of Dagang Oilfield with traditional breaking method
Test, step is as follows：
Step one：At ambient temperature, Dagang Oilfield crude oil containing hydrophobic associated water-soluble polymer 100g is taken, and is heated to
80℃。
Step 2：After by the crude oil constant temperature 24 hours in step one, crude oil does not occur with hydrophobic associated water-soluble polymer
Segregation phenomenon.
Step 3：Crude oil in step one is added into demulsifier under conditions of 80 DEG C, now, crude oil and hydrophobic association water
Soluble polymer has lamination to occur.
Step 4：Crude oil after the layering that will be obtained in step 3 carries out centrifugation behaviour with hydrophobic associated water-soluble polymer
Make, crude oil is separated with hydrophobic associated water-soluble polymer.
Experiment of the invention is understood with contrast test contrast, the present invention relative to prior art have it is quick, effectively, into
This low advantage.The present invention can be not only solved in the prior art when the crude oil that polymer flooding is obtained is demulsified and conveys on ground
When, cause the problem that heat exchanger efficiency is remarkably decreased, and have simple to operate, low cost, it is easy to accomplish.Barium sulfate used is micro-
The characteristics of ball has regeneration and reuses, reduces cost of the invention.
Not detailed part is prior art.
Claims (1)
1. it is a kind of from crude oil remove oil recovery polymer method, it is characterised in that comprise the following steps：
Step one：The crude oil that stirring polymer flooding is obtained；
Step 2：Under conditions of stirring to the crude oil in add the barium sulfate microballoon that particle diameter is 2~5mm, be per quality
It is barium sulfate microballoon described in 10~20g that 100g crude oil adds quality, obtains the blends of crudes containing barium sulfate microballoon；
Step 3：Blends of crudes described in step 2 is stirred 2~5 minutes；
Step 4：The blends of crudes that will be obtained in step 3 is placed in the micro-wave oven that frequency is 2450MHz, is in power
Radiated 1 minute under conditions of 40w, blends of crudes after being radiated；
Step 5：Blends of crudes is filtered under conditions of vacuum after the radiation that will be obtained in step 4, isolated filter
Liquid and filter cake, the filtrate are to take off poly- crude oil, and the filter cake is contained within the barium sulfate microballoon that oil recovery polymer is mainly adhered on surface；
Step 6：To water is added in the filter cake obtained in step 5, it is stirred, filters, the barium sulfate of isolated regeneration is micro-
Ball and the filtrate containing oil recovery polymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510678798.XA CN105295987B (en) | 2015-10-19 | 2015-10-19 | The method that oil recovery polymer is removed from crude oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510678798.XA CN105295987B (en) | 2015-10-19 | 2015-10-19 | The method that oil recovery polymer is removed from crude oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105295987A CN105295987A (en) | 2016-02-03 |
| CN105295987B true CN105295987B (en) | 2017-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510678798.XA Expired - Fee Related CN105295987B (en) | 2015-10-19 | 2015-10-19 | The method that oil recovery polymer is removed from crude oil |
Country Status (1)
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5449463A (en) * | 1994-03-11 | 1995-09-12 | Nalco Chemical Company | Desalter wash water additive |
| CN1295007C (en) * | 2005-01-07 | 2007-01-17 | 辽宁大学 | Demulsifying process for emulsified crude oil |
| CN101434858A (en) * | 2007-11-13 | 2009-05-20 | 凯发有限公司 | Method for removing pollutant in oil |
| CN104211264A (en) * | 2014-09-23 | 2014-12-17 | 陕西华陆化工环保有限公司 | Treatment method of oil extraction wastewater of oil fields |
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2015
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Granted publication date: 20170623 Termination date: 20191019 |