CN106543383B - A kind of poly- silicon of water-soluble nano/polymer gel oil displacement agent and preparation method thereof - Google Patents
A kind of poly- silicon of water-soluble nano/polymer gel oil displacement agent and preparation method thereof Download PDFInfo
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- CN106543383B CN106543383B CN201610901136.9A CN201610901136A CN106543383B CN 106543383 B CN106543383 B CN 106543383B CN 201610901136 A CN201610901136 A CN 201610901136A CN 106543383 B CN106543383 B CN 106543383B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/12—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polysiloxanes
- C08F283/124—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polysiloxanes on to polysiloxanes having carbon-to-carbon double bonds
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- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/588—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
Abstract
The invention discloses a kind of nano polysilicon/polymer physics gel oil displacement agents, it is mainly made of following raw material: 2~5 parts of 2- acrylamide-2-methyl propane sulfonic, 5~8 parts of acrylamide, 0.2~0.5 part of dodecyl sodium sulfate, 0.01~0.50 part of reactable nano polysilicon RNS-D, 0.05~0.25 part of ammonium persulfate, 70~110 parts of deionized water.The oil displacement agent has preferable rheological property, and excellent heatproof anti-shear performance can play the role of increase swept volume in oil reservoir, improve mobility ratio, increase substantially recovery ratio.
Description
Technical field
The invention belongs to oil displacement agent technical fields used in tertiary oil recovery, and in particular to a kind of poly- silicon/polymerization of water-soluble nano
Object gel oil displacement agent and preparation method thereof.
Background technique
For petroleum as important high-grade energy and basic chemical industry raw material, demand is growing day by day.And the new increasing the storage of China's oil gas
Amount grade is relatively low, it is out of strength to take over, and domestic main force oil field has been in High water cut, ultra-high water-containing development period.Although average recovery ratio is only
It is 28.9%, but average Produced Liquid is aqueous more than 90%, most oil reservoirs discard the phase close to water drive, this causes crude oil in China to supply
External dependence degree cumulative year after year is given, the economic security and energy security of country are seriously threatened.
Polymer displacement of reservoir oil is one of the main technology of reservoir sweep in tertiary oil recovery, in the linear of polymer displacement of reservoir oil Partial hydrolysis
Polyacrylamide is most widely used, is mainly based upon its viscosity for being capable of increasing aqueous solution to reach and increase involving for displacing fluid
Volume, improve mobility ratio effect, but linear polyacrylamide apply at the scene in there are it is degradable, not heatproof intolerant to salt, resist
The disadvantages of cutting performance is poor, causing it, viscosity reduces in use, influences Oil Displacing Capacity.Therefore, linear polyacrylamide
And its polymer-modified one of the developing direction as Study Polymer Melts oil displacement agent.
Summary of the invention
Present invention aims to overcome that prior art defect, provides a kind of poly- silicon of water-soluble nano/polymer gel displacement of reservoir oil
Agent, the oil displacement agent have preferable rheological property, and excellent heatproof anti-shear performance can play increase in oil reservoir and involve body
Product, improves the effect of mobility ratio, increases substantially recovery ratio.
The present invention also provides the poly- silicon of above-mentioned water-soluble nano/polymer gel oil displacement agent preparation methods.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of poly- silicon of water-soluble nano/polymer gel oil displacement agent, the oil displacement agent are mainly made of following raw material:
2~5 parts of 2- acrylamide-2-methyl propane sulfonic,
5~8 parts of acrylamide,
0.2~0.5 part of dodecyl sodium sulfate,
0.01~0.50 part of reactable nano polysilicon RNS-D,
0.05~0.25 part of ammonium persulfate,
70~110 parts of deionized water.
The preparation method of the above-mentioned poly- silicon of water-soluble nano/polymer gel oil displacement agent, specifically includes the following steps:
1) 2- acrylamide-2-methyl propane sulfonic is dissolved in 40~60 parts of deionized waters, and adjusts pH value and obtains to 6~9
Obtain solution A；
2) acrylamide and dodecyl sodium sulfate are dissolved in the deionized water of surplus and obtain solution B；
3) it after mixing solution A and solution B, adds reactable nano polysilicon RNS-D and is uniformly mixed, then in N2
Ammonium persulfate is added under atmosphere, be warming up to 70~85 DEG C and keeps the temperature 8~10 hours to get viscogel oil displacement agent is arrived.
In the present invention, reactable nano polysilicon RNS-D is provided by Henan Province's nanoscale materials engineering Technical Research Center,
Surface modification has the double bond functional group of reactable, and surface about 0.737 mmol/g containing double bond, partial size is in 10~15 nm.
In order to increase the viscosity of oil displacement agent, its heat-resistant salt-resistant and anti-shear performance are improved, the present invention is in acrylamide backbone
Middle introducing 2- acrylamide-2-methyl propane sulfonic, while the reactable nano polysilicon that surface modification has double bond functional group is added
Participate in polymerization, nano polysilicon/polymer macromolecule that composite part crosslinking, branch increase.The present invention uses simple aqueous solution
Polymerization, reactable nano polysilicon is introduced into the copolymer of acrylamide and 2- acrylamide-2-methyl propane sulfonic, is increased
The molecular weight and viscosity of polymer, prepare nano polysilicon/polymer gel oil displacement agent, with preferable rheological property,
Excellent heatproof anti-shear performance can play the role of increasing swept volume in oil reservoir, improve mobility ratio, increase substantially and adopt
Yield.Raw material needed for synthesizing the oil displacement agent is cheap and easy to get, and synthesis step is simple, using simple aqueous solution polymerization (synthesis process
Carry out not needing to introduce a large amount of organic solvent in water), it is economic and environment-friendly, and product does not need to post-process, more suitable for industry
Metaplasia produces.
Compared to the prior art, the present invention has the advantage that
Present invention combination nano polysilicon and linear polyacrylamide/2- acrylamide-2-methyl propane sulfonic copolymer spy
Point synthesizes the nano polysilicon/polymer gel oil displacement agent with a large amount of branched structures and part physical cross-linked structure, imparts this
The higher bulk viscosity of oil displacement agent, higher modulus and preferable anti-shear ability.
Detailed description of the invention
Fig. 1 is the poly- silicon of present invention preparation gained water-soluble nano/polymer gel oil displacement agent optical photograph；
Fig. 2 is that the poly- silicon of present invention preparation gained water-soluble nano/polymer gel oil displacement agent scanning electron microscope is shone
Piece and electronic energy spectrum；
Fig. 3 is the poly- silicon of present invention preparation gained water-soluble nano/polymer gel oil displacement agent rheological property；
Fig. 4 is the poly- silicon of present invention preparation gained water-soluble nano/polymer gel oil displacement agent viscosity with shear velocity
Change curve.
Specific embodiment
The present invention is specifically described combined with specific embodiments below, it is necessary to which indicated herein is that the present embodiment is only used
In invention is further explained, it should not be understood as limiting the scope of the invention, the people that is skilled in technique in the field
Member can make some nonessential modifications and adaptations according to the content of aforementioned present invention.
In following embodiments, each raw material dosage is in parts by weight.
Embodiment 1
A kind of preparation method of the poly- silicon of water-soluble nano/polymer gel oil displacement agent, specifically includes the following steps:
1) 4 parts of 2- acrylamide-2-methyl propane sulfonics are dissolved in 50 parts of deionized waters, sodium hydroxide solution is added dropwise and neutralizes
It is 8 acquisition solution As to pH；
2) 5 parts of acrylamides and 0.3 part of dodecyl sodium sulfate are dissolved in 45 parts of deionized water and obtain solution B；
3) it after mixing solution A and solution B, adds 0.05 part of reactable nano polysilicon RNS-D and is uniformly mixed, so
It moves into four-hole boiling flask afterwards；It is passed through N2Stirring 30 minutes so that in N2Under atmosphere, four mouthfuls of burnings then are added in 0.15 part of ammonium persulfate
Bottle is warming up to 85 DEG C and keeps the temperature 8 hours, viscogel oil displacement agent can be obtained.
Fig. 1 is the poly- silicon of preparation gained water-soluble nano/polymer gel oil displacement agent optical photograph, can from figure
Out: the gel oil displacement agent of synthesis is transparent not flow regime substance.Fig. 2 is the preparation gained poly- silicon/polymer of water-soluble nano
The electron scanning micrograph and electronic energy spectrum of gel oil displacement agent, as can be seen from the figure: having reactable in oil displacement agent
The presence of nano polysilicon and its be uniformly dispersed in synthetic material.
1, rheology testing:
Using the rheological property of DHR2 rotational rheometer (Waters Ltd. of the U.S.) measurement oil displacement agent, in spacing 1000
μm, tested under conditions of 40mm plate, 25 DEG C of temperature, 2.0 % of deformation quantity.Test result is detailed in Fig. 3.
Fig. 3 is preparation method of the polymer oil-displacing agent A(referring to embodiment 1 for being used as oil displacement agent in tertiary oil recovery, only
Reactable nano polysilicon RNS-D is not introduced in raw material) with the embodiment of the present invention 1 prepare the poly- silicon/polymer of water-soluble nano
The rheological property curve of gel oil displacement agent B.It can be seen that the poly- silicon/polymer gel of water-soluble nano that the present invention synthesizes in figure
The storage modulus (G ') and Loss modulus (G ' ') of oil displacement agent are significantly increased, and rheological property is excellent, thereby it is assumed that it in sky
Migration ability in gap is good, can be used as effective oil displacement agent carry out using.
Fig. 4 is the poly- silicon of present invention preparation gained water-soluble nano/polymer gel oil displacement agent viscosity with shear velocity
Change curve.The result shows that: nano polysilicon prepared by the present invention/polymer gel oil displacement agent viscosity with higher, with cutting
The increase of cutting speed rate, viscosity decline slowly, show it with preferable anti-shear ability.
2, Oil Displacing Capacity indoor test:
Polymer oil-displacing agent A is measured using multi-functional rock core displacement device sand-filling tube model and is prepared by the embodiment of the present invention 1
The poly- silicon of water-soluble nano/polymer gel oil displacement agent B Oil Displacing Capacity.The quartz sand of 200 ~ 300 mesh fill out pipe, pipe 25 ×
It is tested under 400 mm, temperature 45 C, 1.5 MPa of constant voltage mode.As a result it is detailed in the following table 1.
Table 1 is that the polymer oil-displacing agent A for being used as oil displacement agent in tertiary oil recovery and water-soluble nano prepared by the present invention gather
Silicon/polymer gel oil displacement agent B Oil Displacing Capacity evaluation result.It can be seen that oil displacement agent of the present invention has significant drive in table
Oiliness energy, after injection effective concentration is 0.2% solution 1PV, recovery ratio can increase by 32.6%, with good application prospect.
The indoor oil displacement experiment data of the poly- silicon of the water-soluble nano of the present invention of table 1/polymer gel oil displacement agent
Embodiment 2
A kind of preparation method of the poly- silicon of water-soluble nano/polymer gel oil displacement agent, specifically includes the following steps:
1) 2 parts of 2- acrylamide-2-methyl propane sulfonics are dissolved in 40 parts of deionized waters, sodium hydroxide solution is added dropwise and neutralizes
It is 6 acquisition solution As to pH；
2) 5 parts of acrylamides and 0.2 part of dodecyl sodium sulfate are dissolved in 30 parts of deionized water and obtain solution B；
3) it after mixing solution A and solution B, adds 0.01 part of reactable nano polysilicon RNS-D and is uniformly mixed, so
It moves into four-hole boiling flask afterwards；It is passed through N2Stirring 30 minutes so that in N2Under atmosphere, four mouthfuls of burnings then are added in 0.05 part of ammonium persulfate
Bottle is warming up to 70 DEG C and keeps the temperature 8 hours, viscogel oil displacement agent can be obtained.
Embodiment 3
A kind of preparation method of the poly- silicon of water-soluble nano/polymer gel oil displacement agent, specifically includes the following steps:
1) 2 parts of 2- acrylamide-2-methyl propane sulfonics are dissolved in 45 parts of deionized waters, sodium hydroxide solution is added dropwise and neutralizes
It is 9 acquisition solution As to pH；
2) 6 parts of acrylamides and 0.2 part of dodecyl sodium sulfate are dissolved in 40 parts of deionized water and obtain solution B；
3) it after mixing solution A and solution B, adds 0.15 part of reactable nano polysilicon RNS-D and is uniformly mixed, so
It moves into four-hole boiling flask afterwards；It is passed through N2Stirring 30 minutes so that in N2Under atmosphere, four mouthfuls of burnings then are added in 0.09 part of ammonium persulfate
Bottle is warming up to 75 DEG C and keeps the temperature 10 hours, viscogel oil displacement agent can be obtained.
Embodiment 4
A kind of preparation method of the poly- silicon of water-soluble nano/polymer gel oil displacement agent, specifically includes the following steps:
1) 3 parts of 2- acrylamide-2-methyl propane sulfonics are dissolved in 55 parts of deionized waters, sodium hydroxide solution is added dropwise and neutralizes
It is 9 acquisition solution As to pH；
2) 6.5 parts of acrylamides and 0.4 part of dodecyl sodium sulfate are dissolved in 40 parts of deionized water and obtain solution B；
3) it after mixing solution A and solution B, adds 0.07 part of reactable nano polysilicon RNS-D and is uniformly mixed, so
It moves into four-hole boiling flask afterwards；It is passed through N2Stirring 30 minutes so that in N2Under atmosphere, four mouthfuls of burnings then are added in 0.16 part of ammonium persulfate
Bottle is warming up to 80 DEG C and keeps the temperature 10 hours, viscogel oil displacement agent can be obtained.
Embodiment 5
A kind of preparation method of the poly- silicon of water-soluble nano/polymer gel oil displacement agent, specifically includes the following steps:
1) 5 parts of 2- acrylamide-2-methyl propane sulfonics are dissolved in 60 parts of deionized waters, sodium hydroxide solution is added dropwise and neutralizes
It is 6 acquisition solution As to pH；
2) 8 parts of acrylamides and 0.5 part of dodecyl sodium sulfate are dissolved in 50 parts of deionized water and obtain solution B；
3) it after mixing solution A and solution B, adds 0.45 part of reactable nano polysilicon RNS-D and is uniformly mixed, so
It moves into four-hole boiling flask afterwards；It is passed through N2Stirring 30 minutes so that in N2Under atmosphere, four mouthfuls of burnings then are added in 0.25 part of ammonium persulfate
Bottle is warming up to 85 DEG C and keeps the temperature 10 hours, viscogel oil displacement agent can be obtained.
Prepared by the poly- silicon of resulting water-soluble nano/polymer gel oil displacement agent to embodiment 2 to 5 and has equally carried out rheological characteristic
It can test and Oil Displacing Capacity indoor test.Test result shows: properties of product are suitable with oil displacement agent performance prepared by embodiment 1,
That is storage modulus and Loss modulus is significantly increased, and rheological property is excellent；And there is significant Oil Displacing Capacity, harvesting can be improved
Rate, with good application prospect.
Claims (2)
1. a kind of poly- silicon of water-soluble nano/polymer gel oil displacement agent, which is characterized in that the oil displacement agent is by following raw material
It is made:
2~5 parts of 2- acrylamide-2-methyl propane sulfonic,
5~8 parts of acrylamide,
0.2~0.5 part of dodecyl sodium sulfate,
0.01~0.50 part of reactable nano polysilicon RNS-D,
0.05~0.25 part of ammonium persulfate,
70~110 parts of deionized water；
Reactable nano polysilicon RNS-D is provided by Henan Province's nanoscale materials engineering Technical Research Center, and surface modification has can
Reactive double bond functional group, surface 0.737 mmol/g containing double bond, partial size is in 10~15 nm.
2. the poly- silicon of water-soluble nano described in claim 1/polymer gel oil displacement agent preparation method, which is characterized in that including
Following steps:
1) 2- acrylamide-2-methyl propane sulfonic is dissolved in 40~60 parts of deionized waters, and it is molten to 6~9 acquisitions to adjust pH value
Liquid A；
2) acrylamide and dodecyl sodium sulfate are dissolved in the deionized water of surplus and obtain solution B；
3) it after mixing solution A and solution B, adds reactable nano polysilicon RNS-D and is uniformly mixed, then in N2Atmosphere
Lower addition ammonium persulfate, be warming up to 70~85 DEG C and keep the temperature 8~10 hours to get.
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| CN103613723A (en) * | 2013-12-17 | 2014-03-05 | 山东大学 | Preparation method of temperature-resistant anti-salt anti-shearing nano-polymer |
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Effective date of registration: 20191017 Address after: Room 217, Comprehensive Building, Engineering Research Center for Nanomaterials, Jiyuan Hi-tech Industrial Development Zone, Henan Province, 454650 Patentee after: Jiyuan Haibori New Material Technology Co.,Ltd. Address before: 475001 Henan province city Minglun Street No. 85 Patentee before: Henan University |
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Effective date of registration: 20191122 Address after: Wulongkou town wulongtou Village West, Jiyuan City, Henan Province Patentee after: Henan haiborui silicon material technology Co.,Ltd. Address before: Room 217, Comprehensive Building, Engineering Research Center for Nanomaterials, Jiyuan Hi-tech Industrial Development Zone, Henan Province, 454650 Patentee before: Jiyuan Haibori New Material Technology Co.,Ltd. |
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Denomination of invention: A water-soluble nano polysilicon/polymer gel oil displacement agent and its preparation method Effective date of registration: 20230828 Granted publication date: 20190108 Pledgee: Bank of China Limited by Share Ltd. Jiyuan branch Pledgor: Henan haiborui silicon material technology Co.,Ltd. Registration number: Y2023980053909 |