CN109762101A - A kind of preparation method of superelevation salt-resistant polymer - Google Patents
A kind of preparation method of superelevation salt-resistant polymer Download PDFInfo
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- CN109762101A CN109762101A CN201811473498.8A CN201811473498A CN109762101A CN 109762101 A CN109762101 A CN 109762101A CN 201811473498 A CN201811473498 A CN 201811473498A CN 109762101 A CN109762101 A CN 109762101A
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Abstract
The present invention provides a kind of preparation methods of superelevation salt-resistant polymer, include the following steps: (1) by acrylamide, 2- acrylamide-2-methyl propane sulfonic, function monomer, cosolvent, sodium carbonate, defoaming agent sequentially adds in deionized water, it is configured to uniform solution, (2) step (1) prepared solution is cooled to 14-16 DEG C, logical nitrogen deoxygenation, sequentially add chain-transferring agent, chelating agent and azodiisobutyronitrile, Oxidizing and Reducing Agents is added after 10-20 minutes, it becomes sticky to solution, and after system temperature increases 3 DEG C, stop nitrogen, sealing, adiabatic polymerisation, after system temperature is increased to maximum temperature, temperature no longer increases i.e. polymerization reaction and completes；Successively superelevation salt-resistant polymer is made through hydrolysis, granulation, drying, crushing, screening in material after polymerization；Superelevation salt-resistant polymer of the invention is by introducing function monomer, improving the anti-salt temperature-resistant of polymer using homopolymerization technique, there is excellent dissolubility and suitable viscosity in the calcium chloride solution of 150,000 mineralisings, the organic components that can be used as Water in Water Shutoff in Oil Field profile control, the profile control and water plugging suitable for high temperature and high salt deep-well.
Description
Technical field
The invention belongs to water soluble polymers to synthesize field, and in particular to a kind of preparation method of superelevation salt-resistant polymer.
Background technique
Waterflooding extraction is the development scheme that China oil field generallys use, but the water flows such as a large amount of crack, high infiltration strips in oil reservoir
The presence of predominant pathway leads to inject the case where water carries out inefficient or inefficient cycle along hypertonic predominant pathway than more serious.Pass through
The technologies improving ecology development effectiveness such as water blockoff, deep rock tunneling has become one of the major tasks of current old filed exploitation.For
The effectively water breakthrough of the water flows predominant pathway such as control reservoir fractures, high infiltration strip, implements to block frequently with gel-like blocking agent to it, from
And make flow direction-changing, injection water swept volume is improved, the whole water flooding effectiveness of oil reservoir is improved.After entering with high temperature oil reservoir
Phase exploitation, the temperature and salt content on stratum also constantly rise, and the tune that existing blocking agent has been unable to meet high temperature and high salt oil reservoir blocks up demand.
Therefore, it is very urgent with organic synthesis jelly that a kind of heatproof, the profile control and water plugging of high salt tolerance are developed.
Summary of the invention
In order to solve defect and deficiency of the existing technology, the purpose of the present invention is to provide a kind of superelevation salt resistance polymerizations
The preparation method of object, to solve the problems, such as that existing blocking agent has been unable to meet the stifled demand of tune of high temperature and high salt oil reservoir.
The present invention through the following technical solutions to achieve the above objectives:
(1) acrylamide, 2- acrylamide-2-methyl propane sulfonic, function monomer, cosolvent, sodium carbonate, defoaming agent are successively added
Enter in deionized water, be configured to uniform solution, the parts by weight of each component are as follows:
200-250 parts of acrylamide,
10-20 parts of 2- acrylamide-2-methyl propane sulfonic,
2-3 parts of function monomer,
2-5 parts of cosolvent,
20-30 parts of sodium carbonate,
1-2 parts of defoaming agent,
690-765 parts of deionized water；
The function monomer is N, N- dimethyl cyclohexyl amine, N, one in N- dimethylethanolamine, N,N-DMAA
Kind or several combinations；
(2) step (1) prepared solution is cooled to 14-16 DEG C, leads to nitrogen deoxygenation, sequentially adds chain-transferring agent, chelating agent
And azodiisobutyronitrile, Oxidizing and Reducing Agents is added after 10-20 minutes, after system temperature 2-4 DEG C of solution of raising becomes sticky, stops
Nitrogen, sealing, adiabatic polymerisation, when system temperature no longer increases, that is, polymerization reaction completion；The parts by weight of each component are as follows:
0.01-0.03 parts of chain-transferring agent,
0.01-0.03 parts of chelating agent,
0.2-0.5 parts of azodiisobutyronitrile,
0.002-0.003 parts of oxidant,
0.001-0.002 parts of reducing agent；
(3) successively superelevation salt-resistant polymer is made through hydrolysis, granulation, drying, crushing, screening in the material after polymerization.
Further, the cosolvent is the combination of one or both of urea, polyoxyethylene ether.
Further, the defoaming agent is GPE type defoaming agent.
Further, the chain-transferring agent is sodium formate.
Further, the chelating agent is disodium ethylene diamine tetraacetate.
Further, the oxidant is one or two kinds of combinations of potassium peroxydisulfate, ammonium persulfate.
Further, the reducing agent is the combination of one or both of sodium hydrogensulfite, iron ammonium sulfate.
Further, 90 DEG C are hydrolyzed in the step (3) to hydrolyze 4 hours.
Further, stop nitrogen after system temperature increases 3 DEG C in the step (2).
The preparation method of superelevation salt-resistant polymer provided by the invention include function monomer introducing and polymerization it is excellent
Change, the introducing of 2- acrylamide-2-methyl propane sulfonic and function monomer improves the salt-resistance and temperature resistance of polymer, cosolvent
Addition improve the hydrophilic instant capacity of polymer.Polymer produced by the present invention has in the calcium chloride solution of 150,000 mineralisings
Excellent dissolubility and suitable viscosity, the organic components that can be used as Water in Water Shutoff in Oil Field profile control agent are applied to the tune of high temperature and high salt deep-well
Cut open water blockoff.
Specific embodiment
Below by embodiment the present invention is described in detail, it should be understood that these embodiments are only used for the purpose of illustration,
It is in no way intended to limit protection scope of the present invention.It will be understood by those skilled in the art that without departing from spirit of the invention and outside
Can be with the details and forms of the technical scheme of the invention are modified or replaced under enclosing, but these modifications or substitutions each fall within this hair
In bright protection scope.
Embodiment 1
By the acrylamide of 230g, the 2- acrylamide-2-methyl propane sulfonic of 10g, 2g N, the urine of N- dimethylethanolamine, 2g
Element, the polyoxyethylene ether of 2g, the sodium carbonate of 25g, 1.5gGPE(defoaming agent) it sequentially adds into the deionized water of 727.5g, match
Uniform solution is made.Solution will be prepared and be cooled to 14-16 DEG C, go to polymerization bottle, lead to nitrogen deoxygenation, sequentially add 0.015g
Sodium formate, the disodium ethylene diamine tetraacetate of 0.01g, 0.2g azodiisobutyronitrile, the over cure of 0.002g is added after 15 minutes
After the sodium hydrogensulfite of sour potassium, 0.001g, becomes sticky to solution, and system temperature increases 3 DEG C, stop nitrogen, seal, adiabatic polymerisation,
After system temperature is increased to maximum temperature, temperature no longer increases i.e. polymerization reaction and completes；After the completion of polymerization, it is put into water-bath, 90
DEG C hydrolysis 4 hours.After the completion of hydrolysis, taking-up micelle is granulated, drying, crushes, sieves obtained molecular weight 8,200,000,
150000mg·L-1Dissolution time 50min in high salinity calcium chloride solution；At a high temperature of 90 DEG C, viscosity retention after 30 days
72.3%.
Embodiment 2
By the acrylamide of 210g, the 2- acrylamide-2-methyl propane sulfonic of 15g, 2.5g N, N- dimethylethanolamine, 1g
Urea, the polyoxyethylene ether of 3g, the sodium carbonate of 30g, 2gGPE(defoaming agent) it sequentially adds into the deionized water of 736.5g, match
Uniform solution is made.Solution will be prepared and be cooled to 14-16 DEG C, go to polymerization bottle, lead to nitrogen deoxygenation, sequentially add 0.012g
Sodium formate, the disodium ethylene diamine tetraacetate of 0.01g, 0.2g azodiisobutyronitrile, the over cure of 0.0022g is added after 15 minutes
After the sodium hydrogensulfite of sour potassium, 0.0012g, becomes sticky to solution, and system temperature increases 3 DEG C, stop nitrogen, seal, adiabatic polymerisation,
After system temperature is increased to maximum temperature, temperature no longer increases i.e. polymerization reaction and completes；After the completion of polymerization, it is put into water-bath, 90
DEG C hydrolysis 4 hours.After the completion of hydrolysis, taking-up micelle is granulated, drying, crushes, sieves obtained molecular weight 9,800,000,
150000mg·L-1Dissolution time 45min in high salinity calcium chloride solution；At a high temperature of 90 DEG C, viscosity retention after 30 days
75.3%.The present embodiment is most preferred embodiment, and the technical effect of final products is best.
Embodiment 3
By the acrylamide of 240g, the 2- acrylamide-2-methyl propane sulfonic of 18g, 2g N, the urine of N- dimethylethanolamine, 1g
Element, the polyoxyethylene ether of 4g, the sodium carbonate of 20g, 2gGPE(defoaming agent) it sequentially adds into the deionized water of 736.5g, it prepares
At uniform solution.Solution will be prepared and be cooled to 14-16 DEG C, go to polymerization bottle, lead to nitrogen deoxygenation, sequentially add 0.015g's
Sodium formate, the disodium ethylene diamine tetraacetate of 0.01g, 0.2g azodiisobutyronitrile, after 15 minutes be added 0.003g persulfuric acid
After the sodium hydrogensulfite of potassium, 0.002g, becomes sticky to solution, and system temperature increases 3 DEG C, stop nitrogen, seals, adiabatic polymerisation, body
It is after temperature is increased to maximum temperature, temperature no longer increases i.e. polymerization reaction and completes；After the completion of polymerization, it is put into water-bath, 90 DEG C
Hydrolysis 4 hours.After the completion of hydrolysis, taking-up micelle is granulated, drying, crushes, sieves obtained molecular weight 7,600,000, in 150000mg
L-1Dissolution time 48min in high salinity calcium chloride solution；At a high temperature of 90 DEG C, viscosity retention is 71.6% after 30 days.
Above-described embodiment is only used for the purpose of illustration, is in no way intended to limit protection scope of the present invention.Those skilled in the art answer
It should be appreciated that under without departing from spirit of the invention and periphery can details to technical solution of the present invention and form repair
Change or replace, but these modifications or substitutions are fallen within the protection scope of the present invention.
Claims (9)
1. a kind of preparation method of superelevation salt-resistant polymer, which comprises the steps of:
(1) acrylamide, 2- acrylamide-2-methyl propane sulfonic, function monomer, cosolvent, sodium carbonate, defoaming agent are successively added
Enter in deionized water, be configured to uniform solution, the parts by weight of each component are as follows:
200-250 parts of acrylamide,
10-20 parts of 2- acrylamide-2-methyl propane sulfonic,
2-3 parts of function monomer,
2-5 parts of cosolvent,
20-30 parts of sodium carbonate,
1-2 parts of defoaming agent,
690-765 parts of deionized water；
The function monomer is N, N- dimethyl cyclohexyl amine, N, one in N- dimethylethanolamine, N,N-DMAA
Kind or several combinations；
(2) step (1) prepared solution is cooled to 14-16 DEG C, leads to nitrogen deoxygenation, sequentially adds chain-transferring agent, chelating agent
And azodiisobutyronitrile, Oxidizing and Reducing Agents is added after 10-20 minutes, after system temperature 2-4 DEG C of solution of raising becomes sticky, stops
Nitrogen, sealing, adiabatic polymerisation, when system temperature no longer increases, that is, polymerization reaction completion, the parts by weight of each component are as follows:
0.01-0.03 parts of chain-transferring agent,
0.01-0.03 parts of chelating agent,
0.2-0.5 parts of azodiisobutyronitrile,
0.002-0.003 parts of oxidant,
0.001-0.002 parts of reducing agent；
Successively superelevation salt-resistant polymer is made through hydrolysis, granulation, drying, crushing, screening in material after polymerization.
2. a kind of preparation method of superelevation salt-resistant polymer according to claim 1, which is characterized in that the cosolvent is
The combination of one or both of urea, polyoxyethylene ether.
3. a kind of preparation method of superelevation salt-resistant polymer according to claim 1, which is characterized in that the defoaming agent is
GPE type defoaming agent.
4. a kind of preparation method of superelevation salt-resistant polymer according to claim 1, which is characterized in that the chain-transferring agent
For sodium formate.
5. a kind of preparation method of superelevation salt-resistant polymer according to claim 1, which is characterized in that the chelating agent is
Disodium ethylene diamine tetraacetate.
6. a kind of preparation method of superelevation salt-resistant polymer according to claim 1, which is characterized in that the oxidant is
The combination of one or both of potassium peroxydisulfate, ammonium persulfate.
7. a kind of preparation method of superelevation salt-resistant polymer according to claim 1, which is characterized in that the reducing agent is
The combination of one or both of sodium hydrogensulfite, iron ammonium sulfate.
8. a kind of preparation method of superelevation salt-resistant polymer according to claim 1, which is characterized in that the step (3)
In be hydrolyzed to 90 DEG C hydrolyze 4 hours.
9. a kind of preparation method of superelevation salt-resistant polymer according to claim 1, which is characterized in that the step (2)
In after system temperature increase 3 DEG C after, stop nitrogen.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101914182A (en) * | 2010-08-24 | 2010-12-15 | 北京红芬兴业技术开发有限公司 | Method for synthesizing base underground crosslinked thickening agent |
| CN104387527A (en) * | 2014-11-07 | 2015-03-04 | 安徽天润化学工业股份有限公司 | Preparation method of heat-resistance and salt-tolerance polyacrylamide |
| CN104448135A (en) * | 2014-12-31 | 2015-03-25 | 安徽巨成精细化工有限公司 | Preparing method for heat resistance and salt tolerance polyacrylamide used in oil field |
| CN106008803A (en) * | 2016-05-26 | 2016-10-12 | 中国石油集团渤海钻探工程有限公司 | High temperature resistant cross-linked acid thickening agent and preparation method thereof |
| CN106675540A (en) * | 2016-11-21 | 2017-05-17 | 山东诺尔生物科技有限公司 | Temperature-resistant salt-resistant profile control plugging agent and preparation method thereof |
-
2018
- 2018-12-04 CN CN201811473498.8A patent/CN109762101A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101914182A (en) * | 2010-08-24 | 2010-12-15 | 北京红芬兴业技术开发有限公司 | Method for synthesizing base underground crosslinked thickening agent |
| CN104387527A (en) * | 2014-11-07 | 2015-03-04 | 安徽天润化学工业股份有限公司 | Preparation method of heat-resistance and salt-tolerance polyacrylamide |
| CN104448135A (en) * | 2014-12-31 | 2015-03-25 | 安徽巨成精细化工有限公司 | Preparing method for heat resistance and salt tolerance polyacrylamide used in oil field |
| CN106008803A (en) * | 2016-05-26 | 2016-10-12 | 中国石油集团渤海钻探工程有限公司 | High temperature resistant cross-linked acid thickening agent and preparation method thereof |
| CN106675540A (en) * | 2016-11-21 | 2017-05-17 | 山东诺尔生物科技有限公司 | Temperature-resistant salt-resistant profile control plugging agent and preparation method thereof |
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