CN104844765B - A kind of dissaving polymer oil displacement agent and preparation method thereof - Google Patents
A kind of dissaving polymer oil displacement agent and preparation method thereof Download PDFInfo
- Publication number
- CN104844765B CN104844765B CN201510252951.2A CN201510252951A CN104844765B CN 104844765 B CN104844765 B CN 104844765B CN 201510252951 A CN201510252951 A CN 201510252951A CN 104844765 B CN104844765 B CN 104844765B
- Authority
- CN
- China
- Prior art keywords
- monomer
- dissaving polymer
- oil displacement
- displacement agent
- sexes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention provides a kind of dissaving polymer oil displacement agent and preparation method thereof.It is made up of spherical parent nucleus and the polyacrylamide segment being sequentially connected, Sodium Polyacrylate segment and many claw type hydrophobic function segments of poly- both sexes, wherein, one end of polyacrylamide segment is connected on the spherical parent nucleus, and the other end is connected with Sodium Polyacrylate segment.The poly- many claw type hydrophobic function segments of both sexes are polymerized by acrylic acid glycine betaine monomer or acrylic acid bromo quaternary ammonium salt monomer.The viscosity average molecular weigh of dissaving polymer oil displacement agent is 3,500,000~10,000,000.The mass ratio of spherical parent nucleus and polyacrylamide segment, Sodium Polyacrylate segment and many claw type hydrophobic function segments of poly- both sexes is followed successively by 1：250‑350：60‑85：6‑14.The present invention obtains dissaving polymer oil displacement agent by aqueous phase free radical solution polymerization, and preparation process mild condition, step are simple, green non-pollution, can obtain Series Molecules volume production product.Gained dissaving polymer oil displacement agent has higher anti-shear ability, stronger tackifying ability, good dissolubility and saline-alkaline tolerance, with oil gas field application prospect.
Description
Technical field
The invention belongs to polymeric material field, and in particular to a kind of dissaving polymer oil displacement agent and preparation method thereof.
Background technology
Because water-soluble polyacrylamide can increase considerably aqueous viscosity and reduction water phase permeability, so as to improve water oil
Mobility ratio, raising sweep efficiency, reach the purpose of decreasing water cut and increasing oil, are widely used to include polymer flooding, poly- table binary at present
In various raising recovery ratio methods including compound, poly- table alkali ternary composite driving and profile control and water plugging.
However, the application with polyacrylamide in practice of recovering the oil, it is on injection allocation, pit shaft, near wellbore zone and stratum
The problem of degrading serious in migration process is gradually exposed, and causes the main cause of depolymerization and includes mechanical degradation, heat
Degraded, microbial degradation and chemical degradation etc., and wherein topmost is mechanical degradation.Polymer solution is cut at a high speed through mechanical pump
After cutting, its viscosity declines up to more than 70%.It is the important channel for overcoming this defect that molecular modification is carried out to polymer.Feng
(petroleum journal (PETROLEUM PROCESSING), 2001,17 (6) such as beautiful army：39-43) report and hydrophobic monomer introduced in polymer architecture,
Form the weak cross-linked network of dynamic 3 D in the solution by heat resistance and salt tolerance, after shearing force disappearance, this weak cross-linked structure
It can recover rapidly, shear viscosity retention rate is up to more than 50%.Studied by polyacrylamide molecular modification, enrich comonomer
Species, improve the performance of product, but because most modified product is still linear molecule, the improvement of its anti-shear ability is simultaneously
It is unobvious.
The concept of hyperbranched macromolecular is suggested in 1950s, and be increasingly becoming in polymer chemistry one it is important
Branch, be referred to as forth generation macromolecular material.Hyperbranched macromolecular has highly branched three-dimensional globular structure and numerous ends
Base so as to showing the property completely different with linear molecule, such as without chain entanglement, dissolving be rapid, synthetic method simply and cost
It is low, and a large amount of active end groups of its surface enrichment, required performance can be obtained by terminal groups modification.Dissaving polymer has tens
Functional group, can introduce the arm of tens polyacrylamides, therefore its molecular weight can be the several of normal linear polyacrylamide
Ten times.And the molecular weight of polyacrylamide is bigger, reach that required viscosity concentration is lower, displacement of reservoir oil cost will be greatly reduced.
In view of above analyze, prepare hyperbranched polyacrylamide be future polymer oil displacement agent important development direction it
One.Patent CN103130967 is disclosed using the amine dissaving polymer of end modified ethylene linkage as parent nucleus and acrylamide, propylene
The copolymerization such as sour sodium, hydrophobic monomer dimethyl-allyl-N- alkyl ammomium chlorides prepare dissaving polymer, make in its right preparation process
Dimethyl sulfoxide organic solvent is used, process is complex.Patent CN102492092, which is disclosed, utilizes reversible addion-fragmentation chain transfer
(RAFT) inverse emulsion polymerization is prepared for hyperbranched ionic acylamide polymer, and reaction condition control is harsh, and cost is higher,
And be that the polymer of cationic is not suitable for use in displacement of reservoir oil medicament, it is used as the medicament that flocculates.
The content of the invention
It is an object of the invention to provide a kind of dissaving polymer oil displacement agent and preparation method thereof.
Dissaving polymer oil displacement agent provided by the present invention is by spherical parent nucleus and the polyacrylamide chain being sequentially connected
Section, Sodium Polyacrylate segment and many claw type hydrophobic function segment compositions of poly- both sexes, wherein, one end of the polyacrylamide segment
It is connected on the spherical parent nucleus, the other end is connected with the Sodium Polyacrylate segment.
The structural representation of the dissaving polymer oil displacement agent is as shown in Figure 1.
The spherical parent nucleus is polyglycidyl ether (HPG), and its molecular formula is (C3H8O3)m, wherein m be 7~12 between
Integer.
The polyglycidyl ether HPG is prepared by the method comprising the following steps：Utilize 1,1,1- tri- hydroxyl
Methylpropane (TMP) triggers glycidol to carry out ring-opening polymerisation with the common initiation system that potassium methoxide is constituted, and obtains different molecular weight
Hyperbranched polyglycidyl ether (HPG).
Wherein, 1,1,1- trimethylolpropane is followed successively by 1 with potassium methoxide, the mass ratio of glycidol：0.11-0.13：
130-160；
The temperature of the ring-opening polymerisation is 90-100 DEG C, and the time is -15 hours 10 hours.
The polyacrylamide segment is polymerized by acrylamide monomer.
The Sodium Polyacrylate segment is polymerized by sodium acrylate monomers.
The many claw type hydrophobic function segments of poly- both sexes are polymerized by many claw type hydrophobic function monomers of both sexes.
The many claw type hydrophobic function monomers of both sexes be acrylic acid glycine betaine monomer or acrylic acid bromo quaternary ammonium salt monomer, its
In, the acrylic acid glycine betaine monomer structure formula is：
The structural formula of the acrylic acid bromo quaternary ammonium salt monomer is：
The viscosity average molecular weigh of the dissaving polymer oil displacement agent is 3,500,000~10,000,000.
In the dissaving polymer oil displacement agent, the spherical parent nucleus and polyacrylamide segment, Sodium Polyacrylate segment
And the mass ratio of the poly- many claw type hydrophobic function segments of both sexes is followed successively by 1：250-350：60-85：6-14.
Dissaving polymer oil displacement agent provided by the present invention is prepared by the method comprising the following steps：
(1) under an inert atmosphere, spherical parent nucleus HPG is reacted with redox initiator, obtains reaction solution 1；
(2) acrylamide monomer, sodium acrylate monomers, many claw type of both sexes are slowly added to successively into the reaction solution 1 to dredge
Water function monomer carries out graft reaction to spherical parent nucleus HPG, obtains the reaction solution 2 of the oil displacement agent containing dissaving polymer.
In above method step (1), the inert atmosphere can be nitrogen atmosphere.
The HPG participates in reaction in the form of the HPG aqueous solution.
The redox initiator is selected from following at least one：Ammonium ceric nitrate, potassium peroxydisulfate, ammonium persulfate, persulfuric acid
Sodium and hydrogen peroxide, concretely ammonium ceric nitrate.
The redox initiator participates in reaction in the form of the redox initiator aqueous solution.
In the redox initiator aqueous solution, the mass concentration of the redox initiator is 0.5%~3%,
Concretely 0.5%.
The mass ratio of the redox initiator and HPG is 1.5-3:1, concretely 2:1.
The temperature of the reaction is 30~50 DEG C, and concretely 40 DEG C, the time is 30~60min, concretely 30min.
In above method step (2), the acrylamide monomer is added in the form of the acrylamide monomer aqueous solution, described
The mass concentration of the acrylamide monomer aqueous solution can be 20~30%, concretely 26.7%.
The sodium acrylate monomers are added in the form of the sodium acrylate monomers aqueous solution, the sodium acrylate monomers aqueous solution
Mass concentration can be 10~20%, concretely 16.7%.
The many claw type hydrophobic function monomers of both sexes are added in the form of many claw type hydrophobic function monomer solutions of both sexes, institute
The mass concentration for stating many claw type hydrophobic function monomer solutions of both sexes can be 5~15%, concretely 6.2% or 11.8%.
The temperature of the graft reaction is 45~75 DEG C, and concretely 55 DEG C, the time is 5~10h, concretely 6h.
HPG and the acrylamide monomer in step (2), sodium acrylate monomers and many claw type of both sexes in step (1) is hydrophobic
The mass ratio of function monomer is respectively 1：250-400：60-90：6-20, concretely 1：320：80：8 or 1：266.7：66.7：
13.3。
The above method, which may also include, to be dried processing to the reaction solution 2 of the oil displacement agent containing dissaving polymer and is surpassed
The step of branched polymer oil displacement agent.
The drying is carried out in the baking oven of 60-80 DEG C (such as 70 DEG C).
The advantage of the invention is that：The dissaving polymer oil displacement agent preparation process of the present invention is poly- for aqueous phase free-atom aqueous solution
Close, mild condition, step are simple, green non-pollution, Series Molecules volume production product can be obtained, the product prepared has higher shearing resistance
Ability, stronger tackifying ability, good dissolubility and saline-alkaline tolerance are cut, with oil gas field application prospect.
Brief description of the drawings
Fig. 1 is the structural representation of dissaving polymer oil displacement agent of the present invention.
Fig. 2 is the thickening property figure of dissaving polymer oil displacement agent of the present invention.
Fig. 3 is the anti-salt property figure of dissaving polymer oil displacement agent of the present invention.
Fig. 4 is the anti-shear performance figure of dissaving polymer oil displacement agent of the present invention.
Embodiment
Below by specific embodiment, the present invention will be described, but the invention is not limited in this.
Experimental method used in following embodiments is conventional method unless otherwise specified；Institute in following embodiments
Reagent, material etc., unless otherwise specified, are commercially obtained.
HPG employed in following embodiments is prepared as steps described below：
1,1,1- trimethylolpropane (TMP) (0.187g, 1.39mmol) is added in there-necked flask, is then added dropwise
The methanol solution of 0.11mL 20% potassium methoxide, reacts 20min, methanol is removed in vacuum, anhydrous dioxane 20mL is added.Temperature
Degree rises to 95 DEG C, is slowly added to very much 25mL glycidol (about 10h completions).After addition is finished, continue to react 5h, add big
The methanol of amount, crosses cation pillar, removes K+, white solid HPG, suction filtration, freezing are obtained with substantial amounts of acetone precipitation methanol solution
It is dried in vacuo to obtain product HPG (m=8-10).
Acrylic acid glycine betaine monomer employed in following embodiments is the product that laboratory is voluntarily synthesized, wherein n=1.
Specifically synthetic method is：5.0mL monomers 2- (dimethylamino) ethylmethyl acrylate, 25.0mL acetone are added, dropwise addition contains
The acetone soln 10mL of 2.6mL 1,3- propane sultones.After completion of dropping, 40 DEG C, stirring reaction 10 hours, body are warming up to
System produces a large amount of white solids, cooled and filtered, and crude product cleans the unreacted monomer of removing and sulfonic acid with 20mL acetone repeatedly
Lactone, last white solid obtains product with vacuum drying.
Acrylic acid bromo quaternary ammonium salt monomer employed in following embodiments is the product that laboratory is voluntarily synthesized, wherein n
=16.Specifically synthetic method is：Add 5.0mL monomers 2- (dimethylamino) ethylmethyl acrylate, 40.0mL acetone, drop
Plus the acetone soln 10mL of the bromo n-octadecane containing 9.9g.After completion of dropping, 40 DEG C are warming up to, stirring reaction number 10-20 is small
When, system produces a large amount of white solids, cooled and filtered, and crude product cleans the unreacted monomer of removing with 100mL acetone repeatedly
With bromo n-octadecane, last white solid obtains product with vacuum drying.
Embodiment 1
By 25mg parent nucleus HPG, 85mL H2O is placed in there-necked flask, stirring and dissolving, is passed through nitrogen deoxygenation 45min, then
Stirring reaction 30min at the ammonium ceric nitrate aqueous solution (50mg ammonium ceric nitrates are dissolved in 10mL water), 40 DEG C is added under nitrogen protection,
It is slowly added to acrylamide aqueous solution (8.0g acrylamides are dissolved in 22mL water), aqueous sodium acrylate solution successively into reaction solution
(2.0g PAAs are dissolved in 10mL water), the acrylic acid glycine betaine function monomer aqueous solution (200mg acrylic acid glycine betaine function lists
Body is dissolved in 3mL water), 55 DEG C of reaction 6h are then warming up to, gained reaction solution is placed in into drying in 70 DEG C of baking ovens removes moisture removal, i.e.,
Obtain 1# dissaving polymer oil displacement agents.
Embodiment 2
By 30mg parent nucleus HPG, 85mL H2O is placed in there-necked flask, stirring and dissolving, is passed through nitrogen deoxygenation 45min, then
Stirring reaction 30min at the ammonium ceric nitrate aqueous solution (60mg ammonium ceric nitrates are dissolved in 10mL water), 40 DEG C is added under nitrogen protection,
It is slowly added to acrylamide aqueous solution (8.0g acrylamides are dissolved in 22mL water), aqueous sodium acrylate solution successively into reaction solution
(2.0g PAAs are dissolved in 10mL water), the acrylic acid bromo quaternary ammonium salt monomer aqueous solution (400mg acrylic acid bromo quaternary ammonium salt lists
Body is dissolved in 3mL water), 55 DEG C of reaction 6h are then warming up to, gained reaction solution is placed in into drying in 70 DEG C of baking ovens removes moisture removal, i.e.,
Obtain 2# dissaving polymer oil displacement agents.
The polymer performance evaluation method and result that the present invention is provided are as follows, wherein unaltered portion hydrolyzed polyacrylamide
(i.e. " general polymer ") is industrialization product, and marque is FP6050, purchased from French SNF companies, and its structure is linear straight
Chain：
(1) thickening property：A certain amount of polymer is taken, under 45 DEG C of water bath conditions, various concentrations are prepared with deionized water
Polymer solution, the relation of test polymer viscosity and concentration evaluates the thickening property (see Fig. 2) of polymer, and with not changing
Property partially hydrolyzed polyacrylamide (PHPA) performance is contrasted.
As shown in Figure 2：With the increase of concentration, the viscosity of the 1# and 2# dissaving polymer aqueous solution is dramatically increased, when dense
When spending for 2000mg/L, 1# and 2# dissaving polymer solution viscosities may be up to 97 and 110mPas, far above unmodified portion
Divide the 65.8mPas of hydrolyzed polyacrylamide.
(2) anti-salt property：A certain amount of polymer is taken, is 9374.12mg/L ore deposits with salinity under 45 DEG C of water bath conditions
Change water (simulation Bohai Sea A field polymers solution matches somebody with somebody water filling), ion composition is for (unit mg/L)：Na++K+(3091.96)、Ca2 +(276.17)、Mg2+(168.68)、CO3 2-(14.21)、HCO3 -(311.48)、SO4 2-(85.29)、Cl-(5436.34), test
The relation of polymer viscosity and concentration, evaluates the anti-salt property (see Fig. 3) of polymer, and hydrolyze polyacrylamide with unaltered portion
Amine performance is contrasted.
As shown in Figure 3：1# still maintains higher glue with 2# dissaving polymers in 9374.12mg/L mineralized waters
Degree.In concentrated water, when polymer concentration is 2000mg/L, 1# and 2# dissaving polymer solution viscosities are respectively
25.7 and 27.2mPas, higher than the 12.0mPas of unaltered portion hydrolyzed polyacrylamide.
(3) anti-shear performance：The polymer solution that aimed concn is 1500mg/L is taken, with the 1 grade of shearing of Rhein agitator
20s, determines its apparent viscosity under different salinities before and after polymeric shear, calculates viscosity retention ratio (see Fig. 4), and with not
Modifying moieties hydrolyzed polyacrylamide performance is contrasted.
As shown in Figure 4：In concentrated water, after 1# and 2# dissaving polymer solution are clipped, viscosity retention ratio is protected
Hold between 50%~60%, higher than 40% or so of unaltered portion hydrolyzed polyacrylamide.
In summary, dissaving polymer of the invention is demonstrated by the increasing better than unaltered portion hydrolyzed polyacrylamide
Viscous, salt resistance and anti-shear performance, are expected to be used for polymer displacement of reservoir oil.
Claims (10)
1. a kind of dissaving polymer oil displacement agent, by spherical parent nucleus and the polyacrylamide segment being sequentially connected, polyacrylic acid
Sodium segment and poly- both sexes many claw type hydrophobic function segments composition, wherein, one end of the polyacrylamide segment is connected to described
On spherical parent nucleus, the other end is connected with the Sodium Polyacrylate segment；
The many claw type hydrophobic function segments of poly- both sexes are polymerized by many claw type hydrophobic function monomers of both sexes；
The many claw type hydrophobic function monomers of both sexes are acrylic acid glycine betaine monomer or acrylic acid bromo quaternary ammonium salt monomer；
The structural formula of the acrylic acid glycine betaine monomer is：
The structural formula of the acrylic acid bromo quaternary ammonium salt monomer is：
The spherical parent nucleus is polyglycidyl ether HPG, and its molecular formula is (C3H8O3)m, wherein m is the integer between 7~12.
2. dissaving polymer oil displacement agent according to claim 1, it is characterised in that：The dissaving polymer oil displacement agent
Viscosity average molecular weigh be 3,500,000~10,000,000；
In the dissaving polymer oil displacement agent, the spherical parent nucleus and polyacrylamide segment, Sodium Polyacrylate segment and poly-
The mass ratio of many claw type hydrophobic function segments of both sexes is followed successively by 1：250-350：60-85：6-14.
3. dissaving polymer oil displacement agent according to claim 1 or 2, it is characterised in that：
The spherical parent nucleus HPG is prepared by the method comprising the following steps：
The common initiation system constituted using 1,1,1- trimethylolpropane and potassium methoxide triggers glycidol to carry out ring-opening polymerisation, obtains
To hyperbranched polyglycidyl ether HPG；
The polyacrylamide segment is polymerized by acrylamide monomer；
The Sodium Polyacrylate segment is polymerized by sodium acrylate monomers.
4. a kind of method for preparing dissaving polymer oil displacement agent described in claim 1, comprises the steps：
(1) under an inert atmosphere, spherical parent nucleus HPG is reacted with initiator, obtains reaction solution 1；
(2) acrylamide monomer, sodium acrylate monomers, the hydrophobic work(of many claw type of both sexes are slowly added to successively into the reaction solution 1
Energy monomer carries out graft reaction to spherical parent nucleus HPG, obtains the reaction solution 2 of the oil displacement agent containing dissaving polymer, wherein, described two
Property many claw type hydrophobic function monomers be acrylic acid glycine betaine monomer or acrylic acid bromo quaternary ammonium salt monomer；
The structural formula of the acrylic acid glycine betaine monomer is：
The structural formula of the acrylic acid bromo quaternary ammonium salt monomer is：
5. method according to claim 4, it is characterised in that：The spherical parent nucleus HPG is according to comprising the steps
What method was prepared：
The common initiation system constituted using 1,1,1- trimethylolpropane and potassium methoxide triggers glycidol to carry out ring-opening polymerisation, obtains
To hyperbranched polyglycidyl ether HPG；
Wherein, 1,1,1- trimethylolpropane is followed successively by 1 with potassium methoxide, the mass ratio of glycidol：0.11-0.13：130-
160；
The temperature of the ring-opening polymerisation is 90-100 DEG C, and the time is 10-15h.
6. the method according to claim 4 or 5, it is characterised in that：In step (1), the HPG is with the shape of the HPG aqueous solution
Formula participates in reaction；
The initiator is selected from following at least one：Ammonium ceric nitrate, potassium peroxydisulfate, ammonium persulfate, sodium peroxydisulfate and hydrogen peroxide；
The initiator participates in reaction in the form of initiator solution；
In the initiator solution, the mass concentration of the initiator is 0.5%~3%；
The mass ratio of the initiator and HPG is 1.5-3:1；
The temperature of the reaction is 30~50 DEG C, and the time is 30~60min.
7. method according to claim 4, it is characterised in that：In step (2), the acrylamide monomer is with acrylamide
The form of monomer solution is added, and the mass concentration of the acrylamide monomer aqueous solution is 20~30%；
The sodium acrylate monomers are added in the form of the sodium acrylate monomers aqueous solution, the matter of the sodium acrylate monomers aqueous solution
It is 10~20% to measure concentration；
The many claw type hydrophobic function monomers of both sexes are added in the form of many claw type hydrophobic function monomer solutions of both sexes, and described two
Property many claw type hydrophobic function monomer solutions mass concentration be 5~15%；
The temperature of the graft reaction is 45~75 DEG C, and the time is 5~10h；
HPG in step (1) and acrylamide monomer, sodium acrylate monomers and many claw type hydrophobic functions of both sexes in step (2)
The mass ratio of monomer is respectively 1：250-400：60-90：6-20.
8. method according to claim 4, it is characterised in that：Methods described also includes driving containing dissaving polymer to described
The step of processing obtains dissaving polymer oil displacement agent is dried in the reaction solution 2 of finish；
The drying is carried out in 60-80 DEG C of baking oven.
9. the dissaving polymer oil displacement agent that method any one of claim 4-8 is prepared.
10. application of the dissaving polymer oil displacement agent in polymer displacement of reservoir oil described in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510252951.2A CN104844765B (en) | 2015-05-18 | 2015-05-18 | A kind of dissaving polymer oil displacement agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510252951.2A CN104844765B (en) | 2015-05-18 | 2015-05-18 | A kind of dissaving polymer oil displacement agent and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104844765A CN104844765A (en) | 2015-08-19 |
| CN104844765B true CN104844765B (en) | 2017-07-14 |
Family
ID=53844786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510252951.2A Active CN104844765B (en) | 2015-05-18 | 2015-05-18 | A kind of dissaving polymer oil displacement agent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104844765B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105622451B (en) * | 2015-12-29 | 2017-09-29 | 四川光亚聚合物化工有限公司 | A kind of long chain alkyl ammonium salt monomer, its preparation method and association polymer |
| CN106117456B (en) * | 2016-06-27 | 2018-05-18 | 中国海洋石油集团有限公司 | A kind of fluorine-containing dissaving polymer oil displacement agent |
| CN105924594B (en) * | 2016-06-27 | 2018-07-13 | 中国海洋石油集团有限公司 | A kind of preparation method of fluorine-containing dissaving polymer oil displacement agent |
| CN106008852B (en) * | 2016-06-27 | 2018-08-17 | 中国海洋石油集团有限公司 | A kind of polymer displacement of reservoir oil agent solution based on fluorine-containing dissaving polymer |
| CN106432599A (en) * | 2016-09-29 | 2017-02-22 | 陕西科技大学 | Hyperbranched polyacrylamide and preparation method thereof |
| CN107118301A (en) * | 2017-03-24 | 2017-09-01 | 陕西科技大学 | A kind of hyperbranched amphiprotic polyacrylamide and preparation method thereof |
| CN108440712B (en) * | 2018-03-29 | 2021-01-01 | 唐山冀油瑞丰化工有限公司 | Hyperbranched polymer composite microsphere with core-shell structure, preparation method and application |
| KR102103011B1 (en) * | 2018-06-18 | 2020-04-22 | 숭실대학교산학협력단 | Composition for polylactic acid toughening agents, toughening polylactic acid copolymer using the same and method for manufacturing thereof |
| BR112022002640A2 (en) | 2019-08-15 | 2022-05-03 | Dow Global Technologies Llc | Enhanced oil recovery method and composition |
| CN113698549B (en) * | 2021-09-03 | 2024-05-14 | 上海昶法新材料有限公司 | Hyperbranched polymer, preparation method, application and washing product thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103130967A (en) * | 2013-02-28 | 2013-06-05 | 西南石油大学 | Hyperbranched hydrophobical-associating water-soluble polymer and its preparation method |
| CN103910830A (en) * | 2014-04-17 | 2014-07-09 | 中国海洋石油总公司 | Water-soluble branched polymer as well as preparation method and application thereof |
| CN104250358A (en) * | 2013-06-25 | 2014-12-31 | 中国石油化工股份有限公司 | Hyperbranched copolymer, and preparation method and application thereof |
-
2015
- 2015-05-18 CN CN201510252951.2A patent/CN104844765B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103130967A (en) * | 2013-02-28 | 2013-06-05 | 西南石油大学 | Hyperbranched hydrophobical-associating water-soluble polymer and its preparation method |
| CN104250358A (en) * | 2013-06-25 | 2014-12-31 | 中国石油化工股份有限公司 | Hyperbranched copolymer, and preparation method and application thereof |
| CN103910830A (en) * | 2014-04-17 | 2014-07-09 | 中国海洋石油总公司 | Water-soluble branched polymer as well as preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104844765A (en) | 2015-08-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104844765B (en) | A kind of dissaving polymer oil displacement agent and preparation method thereof | |
| CN104844760B (en) | A kind of water-soluble ultrabranching polymer oil-displacing agent and preparation method thereof | |
| CN104877079B (en) | A kind of water-soluble ultrabranching multi-arm polyacrylamide polymer and preparation method thereof | |
| US8822389B2 (en) | Dendritic comb-shaped polymer thickening agent, preparaton of the same and application thereof | |
| CN104844766B (en) | A kind of hyperbranched multi-arm polyacrylamide polymer and preparation method thereof | |
| CN103923629A (en) | Plugging agent | |
| CN113831482B (en) | CO based on tertiary amine group 2 Responsive tackifying polymer and preparation method and application thereof | |
| CN102391849B (en) | Imidazole polymer oil displacement agent and synthesizing method thereof | |
| CN106117456B (en) | A kind of fluorine-containing dissaving polymer oil displacement agent | |
| CN109628081B (en) | A kind of amphipathic polymer oil displacement agent of bi-quaternary ammonium salt backbone and preparation method thereof | |
| CN105906761B (en) | A kind of preparation method of fluorine-containing hyperbranched multi-arm polyacrylamide polymer | |
| CN105754111A (en) | Hyperbranched polymer oil-displacing agent based on polyethylene glycol/cyclodextrin composite structure and preparation method of hyperbranched polymer oil-displacing agent | |
| CN103320111B (en) | A kind of AM/AA/NVP/YEML quadripolymer oil-displacing agent and synthetic method thereof | |
| CN105801874B (en) | Cyclodextrin-polyethylene glycol self assembly hyperbranched poly acrylamide copolymer oil displacement agent and preparation method thereof | |
| CN106117439B (en) | A kind of polymer displacement of reservoir oil agent solution based on fluorine-containing water-soluble dissaving polymer | |
| CN106008852B (en) | A kind of polymer displacement of reservoir oil agent solution based on fluorine-containing dissaving polymer | |
| CN103224587B (en) | Medium-low molecular weight rigid polymer | |
| CN105924580A (en) | Fluorine-containing water-soluble hyperbranched multi-arm polyacrylamide polymer | |
| CN108341911A (en) | A kind of multifunctional polymer oil displacement agent and its preparation method and application | |
| CN102086163B (en) | Preparation method and application of high temperature and high salinity stabilizer for drilling fluid | |
| CN105924594B (en) | A kind of preparation method of fluorine-containing dissaving polymer oil displacement agent | |
| CN106520095A (en) | High temperature resistant in-depth profile control agent, preparation method and application thereof | |
| CN106046249B (en) | A kind of polymer oil-displacing agent based on fluorine-containing hyperbranched multi-arm polyacrylamide polymer | |
| CN106117440B (en) | A kind of fluorine-containing water-soluble dissaving polymer oil displacement agent | |
| CN105884980B (en) | A kind of fluorine-containing hyperbranched multi-arm polyacrylamide polymer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: China National Offshore Oil Corporation |