CN100354341C - Hydrophobic association polymer dissolving method - Google Patents
Hydrophobic association polymer dissolving method Download PDFInfo
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- CN100354341C CN100354341C CNB2005101177298A CN200510117729A CN100354341C CN 100354341 C CN100354341 C CN 100354341C CN B2005101177298 A CNB2005101177298 A CN B2005101177298A CN 200510117729 A CN200510117729 A CN 200510117729A CN 100354341 C CN100354341 C CN 100354341C
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- Prior art keywords
- acrylamide
- hydrophobic associated
- associated polymer
- temperature
- multipolymer
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- 229920000642 polymer Polymers 0.000 title claims abstract description 57
- 230000002209 hydrophobic effect Effects 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000000243 solution Substances 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 230000033558 biomineral tissue development Effects 0.000 claims abstract description 5
- 239000012266 salt solution Substances 0.000 claims description 19
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 14
- 229920006322 acrylamide copolymer Polymers 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 6
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims description 4
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims description 4
- 229910001424 calcium ion Inorganic materials 0.000 claims description 4
- 229910001425 magnesium ion Inorganic materials 0.000 claims description 4
- 102100021792 Gamma-sarcoglycan Human genes 0.000 claims description 3
- 101000616435 Homo sapiens Gamma-sarcoglycan Proteins 0.000 claims description 3
- ZLSJVVLETDAEQY-UHFFFAOYSA-N n,n-dihexylprop-2-enamide Chemical compound CCCCCCN(C(=O)C=C)CCCCCC ZLSJVVLETDAEQY-UHFFFAOYSA-N 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000011978 dissolution method Methods 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 239000012267 brine Substances 0.000 abstract 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 abstract 2
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 6
- 238000013019 agitation Methods 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 239000012456 homogeneous solution Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 229920002401 polyacrylamide Polymers 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000012452 mother liquor Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 125000005037 alkyl phenyl group Chemical group 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 229920005601 base polymer Polymers 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 229920006158 high molecular weight polymer Polymers 0.000 description 1
- 229920001600 hydrophobic polymer Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003381 solubilizing effect Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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Abstract
The present invention discloses a dissolution method for a hydrophobic association polymer. One method comprises that hydrophobic association polymer powder having the quality percentage content of 0.4 to 1.0 % is slowly added into brine under the condition of stir at 35 to 60 DEG C, and the mixture is continuously stirred for 60 to 180 minutes at the temperature of 35 to 60 DEG C to obtain uniform hydrophobic association polymer solution. Another method comprises that hydrophobic association polymer powder having the quality percentage content of 0.1 to 1.0 % is slowly added into brine at the temperature of 35 to 60 DEG C, and the mixture is continuously stirred for 5 to 10 minutes at the temperature of 35 to 60 DEG C, cyclically flows in a pipeline and orderly passes through 10-mesh, 20-mesh and 40-mesh screen meshes to obtain uniform hydrophobic association polymer solution. The hydrophobic association polymer solution obtained by the method of the present invention can be used for polymer driving technology and profile modification technology under the condition of complicated oil reservoirs having high mineralization degree, and thereby, the recovery ratio of petroleum is increased. The present invention has high practical application value in oil exploitation.
Description
Technical field
The present invention relates to the dissolving method in salt solution of acrylamide copolymer, particularly the dissolving method of hydrophobic associated polymer.
Background technology
Acrylamide copolymer is widely used in the polymer flooding of field of petroleum exploitation and adjusts in the profile-log of water injection technology.Over past ten years, people are towards synthetic when more the high molecular weight polymers direction develops, just be devoted to develop new polymers (the Evani S and Rose G D.Polymer MaterialScience and Engineering that has a small amount of functional group, 1987,57:81-477 and Feng Yujun, Zheng Yan, Asia, Luoping. chemical research and application, 2000,12 (1): 70-73), wherein, the exploitation of hydrophobic associated polymer extremely attracts people's attention.
Hydrophobic associated polymer is a class has a small amount of hydrophobic grouping on the wetting ability macromolecular chain a polymkeric substance.The introducing of hydrophobic grouping makes the character of its SOLUTION PROPERTIES and conventional polyacrylamide, the partially hydrolyzed polyacrylamide aqueous solution have very big difference.When the polymer concentration in the aqueous solution acquired a certain degree, the effect of surging of hydrophobic grouping was associated macromolecular chain, has increased the ydrodynamics volume, thereby has produced tangible viscosifying action.In salt solution, the hydrophobic association effect strengthens, and shows certain salt resistance.Such material can be applicable in the technique of polymer flooding under the abominable reservoir condition of high salinity.
The character that this base polymer is different from partially hydrolyzed polyacrylamide is: because the adding of hydrophobic grouping makes its dissolving power in water reduce.Therefore, under normal temperature (20-25 ℃), adopt ordinary method that the solid hydrophobic polymer powder is dissolved in the water fully.
Summary of the invention
The dissolving method that the purpose of this invention is to provide a kind of hydrophobic associated polymer.
The dissolving method of hydrophobic associated polymer provided by the present invention, be under agitation condition, slowly adding the quality percentage composition in 35-60 ℃ of salt solution is the hydrophobic associated polymer powder of 0.4-1.0%, keeps the temperature continuously stirring then 60-180 minute, obtains hydrophobic associated polymer solution; Described salt solution total mineralization is 5000-40000mg/L, and wherein calcium ions and magnesium ions content is 500-1000mg/L.
Described brinish formula optimization is: every L water contains NaCl 7.341g, KCl 0.066g, CaCl
20.7647g, MgCl
2.6H
2O 1.327g, Na
2SO
40.1261g, Na
2CO
30.0251g, NaHCO
30.4289g.
The quality percentage composition of described hydrophobic associated polymer in salt solution is preferably 0.5%, and solvent temperature is preferably 40 ℃, and churning time is preferably 120 minutes.
The accelerate dissolution method of hydrophobic associated polymer provided by the present invention, be under 35-60 ℃ of temperature, slowly adding the quality percentage composition in salt solution is the hydrophobic associated polymer powder of 0.1-1.0%, keeps the temperature continuously stirring after 5-10 minute, and making it is 10-50m with the discharge capacity in pipeline
3/ h flow velocity circulates, and by 10 orders, 20 orders and 40 order stainless steel meshs, obtains hydrophobic associated polymer solution successively; Described salt solution total mineralization is 5000-40000mg/L, and wherein calcium ions and magnesium ions content is 500-1000mg/L.Described churning time is preferably 5 minutes, and cycle index is preferably 5 times.
Above-mentioned hydrophobic associated polymer can be any one third rare acylamide polymer that contains the hydrophobic association functional group, as third rare acid amides/2 one the third rare amido alkyl sulfonic acid copolymers, acrylamide/vinylformic acid 18 resin copolymers, acrylamide/C10AM/AMPSP multipolymer, AMNVP/DMDA multipolymer, acrylamide/N one alkyl phenyl third rare amide copolymer, acrylamide/vinylformic acid/N, N dihexyl acrylamide copolymer.
Obtaining uniform solution with aforesaid method is the hydrophobic associated polymer mother liquor.In actual applications, can as required this mother liquor be diluted to required working concentration with described salt solution.Can learn that by principle of work of the present invention method of the present invention all is suitable for for the dissolving of all hydrophobic associated polymers.
The invention provides a kind of method of solubilizing hydrophobic association polymer, can obtain the hydrophobic associated polymer solution of homogeneous, can be used in the technique of polymer flooding under the abominable reservoir condition of high salinity the recovery ratio of oil being improved with this method.The present invention will have higher actual application value in oil production.
The present invention will be further described below in conjunction with specific embodiment.
Description of drawings
Fig. 1 is a filter screen forced filtration dissolver synoptic diagram
Embodiment
Method therefor is ordinary method if no special instructions among the following embodiment.
The salt solution prescription: NaCl 7.341, and KCl 0.066, CaCl
20.7647, MgCl
2.6H
2O 1.327, Na
2SO
40.1261, Na
2CO
30.0251, NaHCO
30.4289 (unit: g/L).
The dissolving of embodiment 1, hydrophobic associated polymer AP-P4
Salt solution is heated to 40 ℃, under agitation condition, slowly adds the quality percentage composition and be 0.5% hydrophobic associated polymer AP-P4 (Sichuan light subfamily skill limited-liability company) powder, kept the temperature continuously stirring 2 hours, adopt the Brookfield viscometer, at 40 ℃ of temperature, shearing rate 7.34s
-1Tested viscosity under the condition, the result is 9018mPa.s, has obtained the hydrophobic associated polymer AP-P4 solution of homogeneous.
At normal temperatures, the hydrophobic associated polymer AP-P4 solution of above-mentioned acquisition is diluted to 1750mg/L with salt solution, restir 10 minutes, the homogeneous solution that obtains can be used as the working fluid of polymer flooding or water injection well profile control, and this working fluid passes through the not molten thing content of 100 order stainless steel meshs less than 0.2%.
The dissolving of embodiment 2, hydrophobic associated polymer AP-P4
Salt solution is heated to 55 ℃, under agitation condition, slowly adds the quality percentage composition and be 0.9% hydrophobic associated polymer AP-P4 (Sichuan light subfamily skill limited-liability company) powder, kept the temperature continuously stirring 1 hour, adopt the Brookfield viscometer, at 40 ℃ of temperature, shearing rate 7.34s
-1Tested viscosity under the condition, the result is 8098mPa.s, has obtained the hydrophobic associated polymer AP-P4 solution of homogeneous.
At normal temperatures, the hydrophobic associated polymer AP-P4 solution of above-mentioned acquisition is diluted to 1750mg/L with salt solution, restir 10 minutes, the homogeneous solution that obtains can be used as the working fluid of polymer flooding or water injection well profile control, and this working fluid passes through the not molten thing content of 100 order stainless steel meshs less than 0.2%.
The dissolving of embodiment 3, hydrophobic associated polymer AP-P4
Salt solution is heated to 35,45,55 ℃ respectively, under agitation condition, slowly add the quality percentage composition respectively and be 0.1,0.5,1.0% hydrophobic associated polymer AP-P4 (Sichuan light subfamily skill limited-liability company) powder, keep temperature difference continuously stirring 5,8,10 minutes, and obtained not consoluet solution; This liquid is reinstalled filtration dissolver shown in Figure 1, and (volume is 1m
3) in, under the driving of spiral pump, liquid is 12m with the discharge capacity in pipeline
3The flow velocity of/h circulates, and through 10 orders, 20 orders, 40 purpose stainless steel meshs, cycle index is shown in Table 1 successively, and the sampling of circulation back is adopted the Brookfield viscometer, at 40 ℃ of temperature, shearing rate 7.34s
-1Tested viscosity under the condition, the result is as shown in table 1, shows the hydrophobic associated polymer AP-P4 solution that has obtained homogeneous with above-mentioned dissolving method.
The measurement result of table 1 soltion viscosity
| Solvent temperature (℃) | 35 | 45 | 55 | ||||||
| AP-P4 content (%) | 0.1 | 0.5 | 1.0 | ||||||
| Churning time (min) | 5 | 8 | 10 | ||||||
| Cycle index | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| Soltion viscosity (mPa.s) | 319 | 2219 | 5179 | 7418 | 9018 | 8538 | 10478 | 11678 | 10258 |
At normal temperatures, use the salt solution agitation and dilution to 1750mg/L the hydrophobic associated polymer AP-P4 solution of above-mentioned acquisition, the homogeneous solution that obtains can be used as the working fluid of polymer flooding.This working fluid passes through the not molten thing content of 100 order stainless steel meshs less than 0.2% after testing.
Claims (5)
1, a kind of dissolving method of hydrophobic associated polymer, be under 35-60 ℃ of temperature, slowly adding the quality percentage composition in salt solution is the hydrophobic associated polymer powder of 0.4-1.0%, keeps the temperature continuously stirring 60-180 minute, obtains the hydrophobic associated polymer solution of homogeneous; Described hydrophobic associated polymer is hydrophobic associated polymer AP-P4, acrylamide/2-acrylamide alkyl sulfonic acids multipolymer, acrylamide/vinylformic acid 18 resin copolymers, acrylamide/C
10AM/AMPSP multipolymer, AMNVP/DMDA multipolymer, acrylamide/N-alkyl phenyl acrylamide copolymer or acrylamide/vinylformic acid/N, N dihexyl acrylamide copolymer; Described salt solution total mineralization is 5000-40000mg/L, and wherein calcium ions and magnesium ions content is 500-1000mg/L.
2, method according to claim 1 is characterized in that: described brinish prescription is: every L water contains NaCl7.341g, KCl 0.066g, CaCl
20.7647g, MgCl
26H
2O 1.327g, Na
2SO
40.1261g, Na
2CO
30.0251g, NaHCO
30.4289g.
3, a kind of dissolving method of hydrophobic associated polymer, be under 35-60 ℃ of temperature, slowly adding the quality percentage composition in salt solution is the hydrophobic associated polymer powder of 0.1-1.0%, keeps the temperature continuously stirring 5-10 minute, and making it is 10-50m with the discharge capacity in pipeline
3/ h flow velocity circulates, and successively by 10 orders, 20 orders and 40 purpose screen clothes, obtains the hydrophobic associated polymer solution of homogeneous; Described hydrophobic associated polymer is hydrophobic associated polymer AP-P4, acrylamide/2-acrylamide alkyl sulfonic acids multipolymer, acrylamide/vinylformic acid 18 resin copolymers, acrylamide/C
10AM/AMPSP multipolymer, AMNVP/DMDA multipolymer, acrylamide/N-alkyl phenyl acrylamide copolymer or acrylamide/vinylformic acid/N, N dihexyl acrylamide copolymer; Described salt solution total mineralization is 5000-40000mg/L, and wherein calcium ions and magnesium ions content is 500-1000mg/L.
4, method according to claim 3 is characterized in that: described brinish prescription is: every premium on currency contains NaCl7.341g, KCl 0.066g, CaCl
20.7647g, MgCl
26H
2O 1.327g, Na
2SO
40.1261g, Na
2CO
30.0251g, NaHCO
30.4289g.
5, according to claim 3 or 4 described methods, it is characterized in that: described churning time is 5 minutes, and cycle index is 5 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101177298A CN100354341C (en) | 2005-11-08 | 2005-11-08 | Hydrophobic association polymer dissolving method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101177298A CN100354341C (en) | 2005-11-08 | 2005-11-08 | Hydrophobic association polymer dissolving method |
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| CN1772795A CN1772795A (en) | 2006-05-17 |
| CN100354341C true CN100354341C (en) | 2007-12-12 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102059060B (en) * | 2010-10-25 | 2013-02-20 | 中国海洋石油总公司 | Dissolving method of hydrophobically associating polymer and special stretching device thereof |
| FR3025520A1 (en) * | 2014-09-05 | 2016-03-11 | Rhodia Operations | IMPROVED MOISTURIZATION OF ASSOCIATIVE POLYMERS |
| WO2019118675A1 (en) * | 2017-12-13 | 2019-06-20 | Ecolab Usa Inc. | Solution comprising an associative polymer and a cyclodextrin polymer |
| CN109536145B (en) * | 2018-12-03 | 2021-11-19 | 中国石油天然气集团有限公司 | Water-soluble temporary plugging agent for fracturing and synthesis method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1156497C (en) * | 2001-04-19 | 2004-07-07 | 石油勘探开发科学研究院油田化学研究所 | High-molecular hydrophobic associated polymer, its preparing process and its application in petroleum recovery |
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2005
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1156497C (en) * | 2001-04-19 | 2004-07-07 | 石油勘探开发科学研究院油田化学研究所 | High-molecular hydrophobic associated polymer, its preparing process and its application in petroleum recovery |
Non-Patent Citations (1)
| Title |
|---|
| RTS系列耐温耐盐聚合物的合成与性能 罗键辉，陈桂英.油田化学，第4期 1993 * |
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