CN109251741A - A kind of magnetic Nano oil displacement agent and preparation method thereof - Google Patents
A kind of magnetic Nano oil displacement agent and preparation method thereof Download PDFInfo
- Publication number
- CN109251741A CN109251741A CN201710566647.4A CN201710566647A CN109251741A CN 109251741 A CN109251741 A CN 109251741A CN 201710566647 A CN201710566647 A CN 201710566647A CN 109251741 A CN109251741 A CN 109251741A
- Authority
- CN
- China
- Prior art keywords
- magnetic nano
- oil displacement
- aggregate
- agent
- coupling agent
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- 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
- C09K8/584—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 surfactants
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/10—Nanoparticle-containing well treatment fluids
Abstract
The invention belongs to petrochemical industry, a kind of magnetic Nano oil displacement agent and preparation method thereof is provided.The magnetic Nano oil displacement agent is the modified magnetic nanometer aggregate for being grafted with surfactant, and the modified magnetic nanometer aggregate is coupling agent modified magnetic Nano aggregate.The preparation method include: 1) disperse magnetic Nano aggregate in organic solvent, then with coupling agent hybrid reaction, coupling agent modified magnetic Nano aggregate mixed liquor is made；2) by coupling agent modified magnetic Nano aggregate mixed liquor and surfactant hybrid reaction, the magnetic Nano oil displacement agent is made.The aqueous solution of magnetic Nano oil displacement agent of the present invention can be used as mother oil displacement liquid, play the role of improving oil recovery factor, and magnetic Nano oil displacement agent has preferable magnetic building-up effect, it can be improved displacement efficiency, be conducive to Produced Liquid demulsification, realize efficiently separating and purifying for oily water, and preparation method is simple.
Description
Technical field
The invention belongs to petrochemical industries, and in particular to a kind of magnetic Nano oil displacement agent and preparation method thereof.
Background technique
The medium to high permeable rate old filed of China's major part waterflooding extraction has entered High water cut, " the double height " of high recovery percent of reserves is opened
The hair stage.Under China's background increasing to oil demand, increasing is particularly important the exploitation of remaining oil.It increases surplus
Excess oil exploitation improves the recovery ratio to crude oil, generally carries out: mentioning in terms of improving sweep efficiency and improving displacement efficiency two
High sweep efficiency includes the heterogeneity for changing permeability, flow direction change, the microcosmic sweep efficiency of raising etc.；Improve displacement of reservoir oil effect
The method of rate, which has, to be changed capillary number, changes rock wettability etc..It is based on the tertiary oil recovery technology of these principles, is being improved
Positive effect is played in terms of the recovery ratio of crude oil.
It is to form ultralow interfacial tension, but study using a key problem in technology of more binary and ternary composite driving at present
Show that ultralow interfacial tension cannot be kept over long distances, displacement efficiency to the contribution of overall recovery efficiency with the growth of migration distance and by
Quickly weaken, it is believed that the displacement of reservoir oil in oil reservoir is greatly the displacement of reservoir oil contribution under " non-ultralow " state.It adopts three times
It is still limited that oil improves recovery ratio amplitude, and is not suitable for all oil fields, still has about 40% or more crude oil not employed after drive, and
And the distribution of remaining oil more high degree of dispersion, while the problems such as at high cost, Produced Liquid emulsification is serious, and break milk separation is difficult is faced,
Need research and development oil recovery new material and new technology.
It is analyzed from rock microcosmic angle, oil bearing bed is porous structure, hole of various sizes and duct, rock
Chemical compositions are complicated, these factors, which codetermine, to land layer fluid and inject fluid with the repercussion effect of rock.?
Displacement is to producing well from oil reservoir for petroleum, not a kind of mechanical process of simple driven water-replacing displacement oil, complicated physics mistake
Journey and chemical process, what is played a decisive role in this course is formation fluid and injection fluid with the microcosmic work between rock
With.
Liquid nano (Nanofluid) displacement of reservoir oil is a kind of emerging oil recovery technique, it is using aqueous solution as transfer medium, in water
The middle little particle for forming several hundred to tens even several nanometers, has very big specific surface area and surface energy, substantially reduces
Water/oil/liquid/solid interface tension, so that injection fluid is during washing away hole, rock surface crude oil is easy to peel off into small oil
Drop and driven liquid displacement comes out.There is very high interfacial activity in view of the liquid nano displacement of reservoir oil, nano material itself is unique in addition
Small-size effect and skin effect, liquid nano technology of reservoir sweep is expected to as technological reserve, in terms of improving oil recovery factor
It plays a significant role, becomes the new technology of the raising oil recovery factor with development prospect.
Patent document CN1696240A discloses a kind of chemical oil displacement agent, specifically by coupling agent modified inorganic nanometer-powder
The oil displacement system that body is compounded with petroleum sulfonate surfactant, wherein petroleum sulfonate accounting 40-80%, by the two when use
It is compounded in this ratio.
Patent document CN101570686A uses the salt graft modification of nanoscale silica p-sulfonic acid, obtains nano modification
Cycloalkylsulfonic acid salt oil displacement agent.It is 0.3 when its dosage is mass fraction, oil water interfacial tension can be made to be reduced to 5 × 10-4mN·m-1。
Patent document CN101857801A discloses a kind of nanometer displacement agent and preparation method thereof, according to mass percent
By 0.5%~3% alkali, 1%~5% poly- silicon nano material, 1%~5% surfactant, 0.5%~5% polymer
And excess water configures.
Patent document CN102965094A synthesizes dendritic polymers by Raolical polymerizable, then using blending method by
Dendritic polymers and SiO2Prepare dendritic polymers/SiO2The characteristics of nanometer displacement agent, the oil displacement agent, is to have good resistance to
Warm salt resistant character, anti-shear performance and injection efficiency can establish higher resistance coefficient and residual resistance factor.
Patent document CN103205246A uses sol-gel method to prepare silicon dioxide nanosphere first, then by it
Surface is modified by polyethers and lipophilic cpd, obtains described micro- with shell-chain structure strong oil-wet composite silicon dioxide nanometer
Ball.Multiple functions are assigned on same nanometer grade silica microballoon, make the strong oil-wet with " shell-chain " structure being prepared
Composite silicon dioxide nanosphere has the function of shear thickening, capillarity change, strong oil-wet and washing oil ability etc. simultaneously.
Patent document CN103160268A synthesizes one kind three by acrylamide, acrylic acid, nano silica function monomer
Membered copolymer has stronger anti-shear performance, while having good heat-resistant salt-resistant performance.
Patent document CN103725278A modifies polyacrylamide to Nano particles of silicon dioxide surface by chemical bond,
The stable nano-complex particle of performance is obtained, is then mixed with alkali, surfactant, prepares nanometer displacement agent.
Patent document CN103865008A first with coupling agent to surface modification of silica, then by addition reaction and
Functional poly amide-amine hybridized nanometer silica monomer is made, by itself and acrylamide, acrylic acid, heatproof in amidation process
Salt-resistance monomer reaction, prepares dissaving polymer, shows excellent anti-shear performance, strong tackifying, heat and salt resistance.
Patent document CN104762076A is by acrylamide (AM), acrylic acid (AA) and modified Nano SiO2Function monomer structure
At terpolymer, viscosity with higher at high shear rates has stronger temperature resistance, salt resistance and anti-shear ability,
Oil recovery factor can be improved with polymer flooding.
Patent document CN103937478A passes through nano-powder silane coupler modified then mixed with surfactant, PEG
It closes, water-based nano-fluid is prepared.
Patent document CN104762077A is by modified Nano SiO2Function monomer, acrylamide and acrylic acid mixing are anti-
It answers, synthesizes the polymer with spacial framework, at high shear rates viscosity with higher, have stronger anti-
Temperature, salt resistance and anti-shear ability can improve oil recovery factor with polymer flooding.
Patent document CN104531118A passes through responsive to temperature type polymer, hydrophilic polymer and hydrophobic polymer
Covalent bond is grafted to nanoparticle surface, prepares the composite nanoparticle with temperature sensitive properties, then living with alkali, surface
Property agent compounding, obtain the intelligent nano oil displacement agent with temperature response characteristics.
The document nano silica that bright red etc. is delivered in tertiary oil recovery application study (petroleum journal, 2006,27
(6): 96-99 composite oil-displacing system, modified nano-silica), are formed using organically-modified nano-silica SiClx and petroleum sulfonate
SiClx-petroleum sulfonate compound system can make oil water interfacial tension be reduced to 3.37 × 10-3MN/m or so.
According to above-mentioned document it is found that existing nanometer displacement agent is based primarily upon following two principle to improve recovery ratio:
(1) based on the polymer flood for expanding swept volume, by using modified nano material and acrylamide,
Acrylic acid and function monomer reaction, the composite material prepared have biggish mention in anti-shearing, thermal stability, heat resistance
It is high；
(2) based on the surfactant flooding mechanism for improving displacement efficiency, by nano-material modified, then with surface
Activating agent compounding, reduces the negative effect of chromatographic isolation, so as to improve displacement efficiency.
Practice have shown that positive effect is played in polymer flooding, binary and ternary drive in terms of improving oil recovery factor, but same
When be faced with since polymer remaining in Produced Liquid, alkali, surface-active contents gradually increase, cause Produced Liquid emulsification tight
The problems such as weight, demulsification is poor, dosing is big, processing cost is high, and re-injection recovered water oil content severely exceeds gives production management
Bring larger difficulty.And the compound oil displacement agent based on inorganic nanostructures, either based on increase polymer viscosity, or increase
The ability for adding system to reduce oil water interfacial tension, all none is not the solid content increased in system, and the increase of solid content, is led
Cause more stable (Xia Haiying etc. the factor analysis of oil field extracted water stability of suspension [J] the application of Produced Liquid oil-water interfacial film
Work .2011,40 (3): 449-452,456), eventually leading to Produced Liquid demulsification can be more difficult.
In conclusion existing nanometer displacement agent technology still has biggish improvement to promote leeway, it is urgent to provide one kind can
Improve oil recovery factor, and the nanometer displacement agent that Produced Liquid is easily demulsified.
Summary of the invention
The inventors of the present invention discovered through researches that being modified by specific modifying agent to magnetic Nano material, can make
The magnetic Nano oil displacement agent of oil recovery factor must be improved, in addition, using the magnetism of the nanometer displacement agent itself, it can be in magnetic field
Quick separating, and then realize the demulsification of Produced Liquid.For this purpose, the object of the present invention is to provide a kind of magnetic Nano oil displacement agent and its systems
Preparation Method.
According to the first aspect of the invention, the present invention provides a kind of magnetic Nano oil displacement agent, the magnetic Nano oil displacement agents
For the modified magnetic nanometer aggregate for being grafted with surfactant, the modified magnetic nanometer aggregate is that coupling agent modified magnetism is received
Rice aggregate.
According to the second aspect of the invention, the present invention provides the preparation method of above-mentioned magnetic Nano oil displacement agent, the preparations
Method includes:
1) disperse magnetic Nano aggregate in organic solvent, then with coupling agent hybrid reaction, be made coupling agent modified
Magnetic Nano aggregate mixed liquor；
2) by coupling agent modified magnetic Nano aggregate mixed liquor and surfactant hybrid reaction, the magnetism is made and receives
Rice oil displacement agent.
Magnetic is made by selecting suitable surfactant to be linked in the magnetic Nano aggregate surface of coupling modifier in the present invention
Property nanometer displacement agent, the dilute aqueous solution of magnetic Nano oil displacement agent has oil-displacement capacity, and has magnetism, passes through regulation surface-active
The type and dosage of agent can realize the adjusting of the oil-displacement capacity and magnetic intensity to magnetic Nano oil displacement agent aqueous solution, magnetic Nano
Oil displacement agent not only plays the effect for improving recovery ratio, but also can overcome the problems, such as that oil field extracted water is difficult to break milk separation, final realizationization
It learns drive extraction sewage efficiently separating and purifying, moreover, preparation method of the invention is simple, mild condition, the used time is few.
Specific embodiment
To keep the present invention easier to understand, below in conjunction with embodiment, the present invention will be described in detail, these embodiment party
Formula only serves illustrative, is not intended to restrict the invention.
According to the first aspect of the invention, the present invention provides a kind of magnetic Nano oil displacement agent, the magnetic Nano oil displacement agents
For the modified magnetic nanometer aggregate for being grafted with surfactant, the modified magnetic nanometer aggregate is that coupling agent modified magnetism is received
Rice aggregate.
In the present invention, the magnetic Nano aggregate can be Fe3O4And/or γ-Fe2O3, partial size can for 10~
100nm, preferably 30~90nm.
In the present invention, the surfactant can be selected from polyoxyethylene fatty alkyl ether sulfonate, fatty alcohol polyoxyethylene ether
At least one of sodium sulphate, lauryl sodium sulfate and neopelex.When surfactant is living for above-mentioned surface
When two or more of mixtures in property agent, mixed proportion can be selected arbitrarily.
In the present invention, the coupling agent can be amino silicane coupling agent.Under preferable case, the coupling agent is selected from γ-
Aminopropyl triethoxysilane, γ-aminopropyltrimethoxysilane, N- β-aminoethyl-γ-aminopropyltriethoxy dimethoxy silicon
Alkane, N- β-aminoethyl-γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxy diethoxy silane and γ-divinyl triammonium
At least one of hydroxypropyl methyl dimethoxysilane.
According to the present invention, in magnetic Nano oil displacement agent, the weight ratio of magnetic Nano Gu Liao ︰ Ou Lian Ji ︰ surfactant are as follows:
1 ︰, 2~10 ︰ 3~15.
According to the second aspect of the invention, the present invention provides the preparation method of above-mentioned magnetic Nano oil displacement agent, the preparations
Method includes:
1) disperse magnetic Nano aggregate in organic solvent, then with coupling agent hybrid reaction, be made coupling agent modified
Magnetic Nano aggregate mixed liquor；
2) by coupling agent modified magnetic Nano aggregate mixed liquor and surfactant hybrid reaction, the magnetism is made and receives
Rice oil displacement agent.
In the present invention, the organic solvent can be C1~C4The volume ratio of the aqueous solution of alcohol, alcohol and water can be 1~3 ︰ 2,
Preferably 1 ︰ 1.Under preferable case, C1~C4Alcohol is ethyl alcohol and/or isopropanol.Work as C1~C4Alcohol is the mixing of ethyl alcohol and isopropanol
When object, the two can be mixed with arbitrary proportion.
According to the present invention, the weight ratio of the magnetic Nano aggregate and the organic solvent is 1 ︰, 10~1 ︰ 60.
In the present invention, following manner progress is can be used in the dispersion of magnetic Nano aggregate in organic solvent: by magnetic Nano
Aggregate and organic solvent are mixed and stirred for 20~30min, then 20~60min of sonic oscillation, are uniformly mixed the two.It is preferred that feelings
Under condition, the revolving speed of stirring is 400~500r/min.
According to the present invention, the molar ratio of the magnetic Nano aggregate and the coupling agent can be 1 ︰, 2~1 ︰ 6, preferably
1 ︰, 3~1 ︰ 5.
According to the present invention, it is 40~60 DEG C that the condition of hybrid reaction, which may include: temperature, in step 1), and the time is 1~3h.
Under preferable case, the coupling agent is added to the water-soluble of uniformly mixed magnetic Nano aggregate and alcohol under stiring
In liquid, coupling agent modified magnetic Nano aggregate mixed liquor is made in stirring and 1~2h of isothermal reaction at 40~50 DEG C.
According to the present invention, the molar ratio of the surfactant and the coupling agent is 1 ︰, 0.5~1 ︰ 2.
According to the present invention, it is 40~60 DEG C that the condition of hybrid reaction, which may include: temperature, in step 2), and the time is 2~5h.
Under preferable case, at 40~50 DEG C and under conditions of stirring, the modified magnetism of connection agent is added in surfactant and is received
In rice aggregate mixed liquor, lower 2~4h of isothermal reaction is stirred, magnetic Nano oil displacement agent is made.
In addition, preparation method of the invention include thes steps that separation, washing and drying.
In the present invention, separation the mixed liquor obtained after step 2) reaction can be centrifuged using centrifuge separation,
The clear liquid for discarding top washs the magnetic material of lower part；Cleaning solution used by washing and washing times can be this
The conventional selection in field, under preferable case, successively using dehydrated alcohol and deionized water respectively to magnetic material washing three times；So
Magnetic material can be dried under 60 DEG C of vacuum condition afterwards, obtain the magnetic Nano oil displacement agent.
The aqueous solution of magnetic Nano oil displacement agent of the present invention can be used as mother oil displacement liquid, mass concentration can for 0.2~
1%.The displacing fluid is used for binary or ternary composite driving, the magnetic Nano oil displacement agent can play raising oil recovery factor
Effect, in addition, due to itself having magnetism, magnetisable material magnetic picture suffered in magnetic field is more much bigger than its gravity
Times, therefore Magneto separate can realize short time, efficient solid-liquor separation, solve the problems, such as that Produced Liquid is intractable.
The present invention is described in detail by the following examples.
In following Application Example, the evaluation method of magnetic Nano enhanced oil recovery by using displacing agent are as follows:
1) after vacuumizing artificial core, saturation simulation water flooding, taking-up dries surface water droplet with filter paper, weighs rock core
Weight in wet base calculates its pore volume, is finally immersed in rock core in simulated formation water for use；
2) pretreated rock core is taken out, is put it into rock core fastener after recording the basic parameter of core, adds confining pressure, it is real
Testing temperature setting is 75 DEG C；
3) simulated formation water saturation rock core is used, records injection rate, inlet and outlet pressure etc. in real time, calculates the water phase infiltration of rock core
Then rate uses simulation oil saturated core, until simulation oil is no longer flowed out in exit, record exit oil, water volume in real time
And displacement pressure etc.；
4) water drive, until exit no longer effluent oil, record exit oil, water volume, and calculate waterflood recovery efficiency factor；
Magnetic Nano oil displacement agent drives, that is, injects prepared magnetic Nano oil displacement agent-aqueous dispersion, until exit no longer effluent oil
Until, the volume of exit oil is recorded in real time, calculates the crude oil coloured silk yield that magnetic Nano oil displacement agent can be improved.
Embodiment 1
This implementation is for illustrating magnetic Nano oil displacement agent and preparation method thereof of the invention.
(1) Fe of 50nm is taken3O4Magnetic material 5g, it is spare after being washed with deionized to neutrality；
(2) 100mL ethanol water (volume ratio of ethyl alcohol and water is 1 ︰ 1) is packed into beaker, it then will be ready
Fe3O4It is added in beaker, is put into ultrasonator, sonic oscillation 30min；It is transferred into three-neck flask again, is put into band
Have on the magnetic stirring apparatus of water bath with thermostatic control, leads to argon gas protection, 14.35g γ-is added under the conditions of being stirred at room temperature into three-neck flask
Aminopropyl triethoxysilane is warming up to 50 DEG C and isothermal reaction 2h under continuous stirring, obtains the magnetic of surface link coupling agent
Property nanometer Fe3O4Mixed liquor；
(3) to the magnetic Nano Fe for holding surface link coupling agent at 50 DEG C and under conditions of stirring3O4The three of mixed liquor
18.70g lauryl sodium sulfate is added in neck flask, isothermal reaction 4h, obtains surfactant-modified magnetism under stiring
Nanometer Fe3O4Mixed liquor；
(4) by surfactant-modified magnetic Nano Fe3O4Mixed liquor is transferred in centrifugal bottle and is centrifuged, and discards
Upper clear supernate successively respectively washs lower magnetic material three times with dehydrated alcohol and deionized water, and then 60 DEG C of vacuum drying, obtain
To magnetic Nano oil displacement agent KSD-1.
Embodiment 2
This implementation is for illustrating magnetic Nano oil displacement agent and preparation method thereof of the invention.
(1) Fe of 80nm is taken3O4Magnetic material 10g, it is spare after being washed with deionized to neutrality；
(2) 300mL ethanol water (volume ratio of ethyl alcohol and water is 1 ︰ 1) is packed into beaker, it then will be ready
Fe3O4It is added in beaker, is put into ultrasonator, sonic oscillation 30min；It is transferred into three-neck flask again, is put into band
Have on the magnetic stirring apparatus of water bath with thermostatic control, leads to argon gas protection, 23.25g γ-is added under the conditions of being stirred at room temperature into three-neck flask
Aminopropyl trimethoxysilane is warming up to 50 DEG C and isothermal reaction 2h under continuous stirring, obtains the magnetic of surface link coupling agent
Property nanometer Fe3O4Mixed liquor；
(3) to the magnetic Nano Fe for holding surface link coupling agent at 50 DEG C and under conditions of stirring3O4The three of mixed liquor
45.19g neopelex is added in neck flask, isothermal reaction 4h, obtains surfactant-modified magnetic under stiring
Property nanometer Fe3O4Mixed liquor；
(4) by surfactant-modified magnetic Nano Fe3O4Mixed liquor is transferred in centrifugal bottle and is centrifuged, and discards
Upper clear supernate successively respectively washs lower magnetic material three times with dehydrated alcohol and deionized water, and then 60 DEG C of vacuum drying, obtain
To magnetic Nano oil displacement agent KSD-2.
Embodiment 3
This implementation is for illustrating magnetic Nano oil displacement agent and preparation method thereof of the invention.
(1) Fe of 50nm is taken3O4Magnetic material 5g, it is spare after being washed with deionized to neutrality；
(2) 300mL ethanol water (volume ratio of ethyl alcohol and water is 1 ︰ 1) is packed into beaker, it then will be ready
Fe3O4It is added in beaker, is put into ultrasonator, sonic oscillation 30min；It is transferred into three-neck flask again, is put into band
Have on the magnetic stirring apparatus of water bath with thermostatic control, leads to argon gas protection, 20.70g γ-is added under the conditions of being stirred at room temperature into three-neck flask
Aminopropyltriethoxy diethoxy silane is warming up to 50 DEG C and isothermal reaction 2h under continuous stirring, obtains surface link coupling agent
Magnetic Nano Fe3O4Mixed liquor；
(3) to the magnetic Nano Fe for holding surface link coupling agent at 50 DEG C and under conditions of stirring3O4The three of mixed liquor
Three sodium sulfonate of ethoxylated of 45.01g myristyl is added in neck flask, isothermal reaction 4h, obtains surface-active under stiring
The modified magnetic Nano Fe of agent3O4Mixed liquor；
(4) by surfactant-modified magnetic Nano Fe3O4Mixed liquor is transferred in centrifugal bottle and is centrifuged, and discards
Upper clear supernate, after lower magnetic material is successively respectively washed three times with dehydrated alcohol and deionized water, then 60 DEG C of vacuum drying,
Obtain magnetic Nano oil displacement agent KSD-3.
Application Example 1
Magnetic Nano oil displacement agent KSD-1 made from embodiment 1 is configured to the magnetic Nano displacement of reservoir oil that mass concentration is 0.3%
Then agent-aqueous dispersion carries out object mould displacement test (core diameter 2.52cm, length 5.35cm, the infiltration of artificial core
Saturating rate is 0.346 μm2).Water drive is to aqueous 95% first, and measuring water drive and improving oil recovery factor is 51.3%, then metaideophone 0.4pV
Magnetic Nano oil displacement agent-the aqueous dispersion of (pore volume) then proceedes to water drive to aqueous 98%, measures the magnetic Nano displacement of reservoir oil
Agent improves oil recovery factor 17.6% on the basis of water drive.
Application Example 2
Magnetic Nano oil displacement agent KSD-2 made from embodiment 2 is configured to the magnetic Nano displacement of reservoir oil that mass concentration is 0.3%
Then agent-aqueous dispersion carries out object mould displacement test (core diameter 2.51cm, length 5.38cm, the infiltration of artificial core
Saturating rate is 0.412 μm2).Water drive is to aqueous 95% first, and measuring water drive and improving oil recovery factor is 49.5%, then metaideophone 0.4pV
Magnetic Nano oil displacement agent-the aqueous dispersion of (pore volume) then proceedes to water drive to aqueous 98%, measures the magnetic Nano displacement of reservoir oil
Agent improves oil recovery factor 15.3% on the basis of water drive.
Application Example 3
Magnetic Nano oil displacement agent KSD-3 made from embodiment 3 is configured to the magnetic Nano displacement of reservoir oil that mass concentration is 0.3%
Then agent-aqueous dispersion carries out object mould displacement test (core diameter 2.51cm, length 5.25cm, the infiltration of artificial core
Saturating rate is 0.407 μm2).Water drive is to aqueous 95% first, and measuring water drive and improving oil recovery factor is 50.5%, then metaideophone 0.4pV
Magnetic Nano oil displacement agent-the aqueous dispersion of (pore volume) then proceedes to water drive to aqueous 98%, measures the magnetic Nano displacement of reservoir oil
Agent improves oil recovery factor 16.8% on the basis of water drive.
Application Example 4~6
Magnetic Nano oil displacement agent made from embodiment 1-3 is configured to the magnetic Nano that mass concentration is 0.1% respectively to drive
Finish-aqueous dispersion, is sufficiently stirred, and places stand-by.
200mL oily wastewater (oil content 320mg/L) is taken to be added in 3 500mL beakers respectively, correspondence markings 1#,
2#, 3# are separately added into magnetic Nano oil displacement agent-aqueous dispersion of the above-mentioned configured embodiment 1-3 of 5mL in three beakers
System, adds micro anionic polyacrylamide, and then quickly (300r/min) stirs 2min, and (50r/min) is stirred at a slow speed
3min, then beaker is placed on magnet, 1min is stood, upper layer clear water is then taken to survey oil content.Wherein, the oil content of 1# is
The oil content of 35mg/L, 2# are that the oil content of 42mg/L, 3# are 38mg/L.
Comparison study example 1
It is identical as the test method of Application Example 4~6, the difference is that, magnetism is not added in this application comparative example
Nanometer displacement agent-aqueous dispersion, beaker are labeled as 4#, and the oil content for measuring 4# is 308mg/L.
The data of Application Example 1~3 show that magnetic Nano oil displacement agent of the invention can effectively improve oil recovering
Rate, in addition, the data of comparison Application Example 4~6 and Comparison study example 1 are it is found that using magnetic Nano oil displacement agent of the invention
When carrying out the displacement of reservoir oil, since it is with preferable magnetic building-up effect, displacement efficiency can be improved, be conducive to Produced Liquid demulsification, finally
Realize efficiently separating and purifying for extraction oily water.
The embodiment of the present invention is described above, above description is exemplary, and non-exclusive, and also not
It is limited to disclosed embodiment.Without departing from the scope and spirit of illustrated embodiment, for the art
Many modifications and changes are obvious for those of ordinary skill.
Claims (10)
1. a kind of magnetic Nano oil displacement agent, which is characterized in that the magnetic Nano oil displacement agent is the modification for being grafted with surfactant
Magnetic Nano aggregate, the modified magnetic nanometer aggregate are coupling agent modified magnetic Nano aggregate.
2. magnetic Nano oil displacement agent according to claim 1, wherein the magnetic Nano aggregate is Fe3O4And/or γ-
Fe2O3, partial size is 10~100nm.
3. magnetic Nano oil displacement agent according to claim 1, wherein the surfactant is selected from aliphatic alcohol polyethenoxy
At least one of ether sulfonic acid sodium, sodium sulfate of polyethenoxy ether of fatty alcohol, lauryl sodium sulfate and neopelex.
4. magnetic Nano oil displacement agent according to claim 1, wherein the coupling agent is amino silicane coupling agent.
5. magnetic Nano oil displacement agent according to claim 1 or 4, wherein the coupling agent is selected from three ethoxy of γ-aminopropyl
Base silane, γ-aminopropyltrimethoxysilane, N- β-aminoethyl-γ-aminopropyltriethoxy dimethoxysilane, N- β-aminoethyl-
γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxy diethoxy silane and γ-divinyl triammonium hydroxypropyl methyl dimethoxy
At least one of base silane.
6. magnetic Nano oil displacement agent according to claim 1, wherein in magnetic Nano oil displacement agent, magnetic Nano Gu Liao ︰ is even
The weight ratio of Lian Ji ︰ surfactant are as follows: 1 ︰, 2~10 ︰ 3~15.
7. the preparation method of magnetic Nano oil displacement agent described in any one of claim 1~6, which is characterized in that the preparation
Method includes:
1) disperse magnetic Nano aggregate in organic solvent, then with coupling agent hybrid reaction, coupling agent modified magnetism is made
Nanometer aggregate mixed liquor；
2) by coupling agent modified magnetic Nano aggregate mixed liquor and surfactant hybrid reaction, the magnetic Nano is made and drives
Finish.
8. preparation method according to claim 7, wherein the organic solvent is C1~C4The aqueous solution of alcohol, alcohol and water
Volume ratio is 1~3 ︰ 2.
9. preparation method according to claim 7, wherein the weight ratio of the magnetic Nano aggregate and the organic solvent
For 1 ︰, 10~1 ︰ 60；The molar ratio of the magnetic Nano aggregate and the coupling agent is 1 ︰, 3~1 ︰ 5；The surfactant with
The molar ratio of the coupling agent is 1 ︰, 0.5~1 ︰ 2.
10. preparation method according to claim 7, wherein in step 1) condition of hybrid reaction include: temperature be 40~
60 DEG C, the time is 1~3h；It is 40~60 DEG C that the condition of hybrid reaction, which includes: temperature, in step 2), and the time is 2~5h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710566647.4A CN109251741A (en) | 2017-07-12 | 2017-07-12 | A kind of magnetic Nano oil displacement agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710566647.4A CN109251741A (en) | 2017-07-12 | 2017-07-12 | A kind of magnetic Nano oil displacement agent and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109251741A true CN109251741A (en) | 2019-01-22 |
Family
ID=65051537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710566647.4A Pending CN109251741A (en) | 2017-07-12 | 2017-07-12 | A kind of magnetic Nano oil displacement agent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109251741A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110016329A (en) * | 2019-05-14 | 2019-07-16 | 西南石油大学 | A kind of high temperature and high salt oil deposit original position emulsification system and its application |
| CN110408374A (en) * | 2019-06-17 | 2019-11-05 | 南京先进生物材料与过程装备研究院有限公司 | A kind of method and device using micro flow field reaction technology preparation nanometer cladding oil displacement agent |
| CN110776898A (en) * | 2019-11-22 | 2020-02-11 | 中国石油大学(华东) | Viscoelastic nano-magnetic fluid for improving crude oil recovery ratio of tight reservoir and preparation method thereof |
| CN112210356A (en) * | 2020-09-24 | 2021-01-12 | 南京师范大学 | Magnetic-base black phosphorus nano oil displacement agent and preparation method thereof |
| CN112251206A (en) * | 2020-09-24 | 2021-01-22 | 南京师范大学 | Magnetic nano oil displacement agent with black phosphorus as matrix and preparation method thereof |
| CN112266775A (en) * | 2020-10-23 | 2021-01-26 | 西南石油大学 | Preparation of in-situ nano emulsifier and oil reservoir application method |
| CN112591848A (en) * | 2020-12-23 | 2021-04-02 | 清华海峡研究院（厦门） | Oil-water separation method and system for oily sewage |
| CN113122217A (en) * | 2021-04-23 | 2021-07-16 | 西南石油大学 | Carbon-based amphiphilic nano-flow for oil displacement and preparation method thereof |
| CN113332966A (en) * | 2021-07-16 | 2021-09-03 | 黑龙江省科学院高技术研究院 | Cannabidiol specific adsorption magnetic molecule polymer material and preparation method thereof |
| CN113527601A (en) * | 2021-06-28 | 2021-10-22 | 西安石油大学 | Nano oil displacement agent for high-temperature high-salinity oil-gas field and preparation method thereof |
| WO2022005493A1 (en) * | 2020-06-29 | 2022-01-06 | Saudi Arabian Oil Company | Magnetically labeled hybrid nanosurfactants for oil reservoir applications |
| CN115261002A (en) * | 2021-04-30 | 2022-11-01 | 中国石油天然气股份有限公司 | Superparamagnetic graphene oxide oil displacement agent and preparation method thereof |
| CN115449361A (en) * | 2022-09-30 | 2022-12-09 | 湖北三雄科技发展有限公司 | Microbial oil displacement agent for high-temperature high-salinity oil reservoir and preparation method thereof |
| CN116119796A (en) * | 2023-03-03 | 2023-05-16 | 斯坦德技术工程(青岛)有限公司 | Ferroferric oxide nano-composite adsorption flocculant and preparation method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2490207A (en) * | 2011-04-05 | 2012-10-24 | Tracesa Ltd | Fluid identification system comprising encapsulated DNA |
| CN103334724A (en) * | 2013-06-03 | 2013-10-02 | 中国石油天然气股份有限公司 | Method and well pattern structure for mining oil deposit with nano magnetofluid displacement |
| CN103897683A (en) * | 2014-03-10 | 2014-07-02 | 中国石油天然气股份有限公司 | Authigenic heat injection composition for underground catalytic oxidation of crude oil |
| CN103937478A (en) * | 2014-04-16 | 2014-07-23 | 东北石油大学 | Preparation method of nanofluid for improving oil recovery |
| WO2014123672A1 (en) * | 2013-02-05 | 2014-08-14 | Board Of Regents, The University Of Texas System | Hydrophobic paramagnetic nanoparticles as intelligent crude oil tracers |
| CN104073287A (en) * | 2014-07-08 | 2014-10-01 | 清华大学 | High-efficiency magnetic demulsifier capable of being controllably recovered aiming at water-in-oil system emulsion and preparation method thereof |
| CN104153125A (en) * | 2014-07-30 | 2014-11-19 | 东华大学 | Flexible ferric oxide nanofiber membrane and preparation method |
| CN105498696A (en) * | 2015-12-16 | 2016-04-20 | 杭州电子科技大学 | Method for preparing magnetic nanoparticles suitable for emulsified oil wastewater treatment |
| WO2016187541A1 (en) * | 2015-05-21 | 2016-11-24 | Massachusetts Institute Of Technology | Multifunctional particles for enhanced oil recovery |
| CN106179108A (en) * | 2016-07-25 | 2016-12-07 | 中国石油大学(华东) | Heterogeneous foam system of magnetic response type and preparation method thereof |
-
2017
- 2017-07-12 CN CN201710566647.4A patent/CN109251741A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2490207A (en) * | 2011-04-05 | 2012-10-24 | Tracesa Ltd | Fluid identification system comprising encapsulated DNA |
| WO2014123672A1 (en) * | 2013-02-05 | 2014-08-14 | Board Of Regents, The University Of Texas System | Hydrophobic paramagnetic nanoparticles as intelligent crude oil tracers |
| CN103334724A (en) * | 2013-06-03 | 2013-10-02 | 中国石油天然气股份有限公司 | Method and well pattern structure for mining oil deposit with nano magnetofluid displacement |
| CN103897683A (en) * | 2014-03-10 | 2014-07-02 | 中国石油天然气股份有限公司 | Authigenic heat injection composition for underground catalytic oxidation of crude oil |
| CN103937478A (en) * | 2014-04-16 | 2014-07-23 | 东北石油大学 | Preparation method of nanofluid for improving oil recovery |
| CN104073287A (en) * | 2014-07-08 | 2014-10-01 | 清华大学 | High-efficiency magnetic demulsifier capable of being controllably recovered aiming at water-in-oil system emulsion and preparation method thereof |
| CN104153125A (en) * | 2014-07-30 | 2014-11-19 | 东华大学 | Flexible ferric oxide nanofiber membrane and preparation method |
| WO2016187541A1 (en) * | 2015-05-21 | 2016-11-24 | Massachusetts Institute Of Technology | Multifunctional particles for enhanced oil recovery |
| CN105498696A (en) * | 2015-12-16 | 2016-04-20 | 杭州电子科技大学 | Method for preparing magnetic nanoparticles suitable for emulsified oil wastewater treatment |
| CN106179108A (en) * | 2016-07-25 | 2016-12-07 | 中国石油大学(华东) | Heterogeneous foam system of magnetic response type and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| DUSHYANT SINGH SHEKHAWAT ET AL.: "Magnetic Recovery-Injecting Newly Designed Magnetic Fracturing Fluid with Applied Magnetic Field for EOR", 《SOCIETY OF PETROLEUM ENGINEERS》 * |
| 姜翠玉 等: "Fe3O4磁性纳米粒子的助凝性能及机理分析", 《石油学报（石油加工）》 * |
| 柏景方: "《污水处理技术》", 31 July 2006, 哈尔滨工业大学出版社 * |
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110016329B (en) * | 2019-05-14 | 2021-02-26 | 西南石油大学 | High-temperature high-salinity oil reservoir in-situ emulsification system and application thereof |
| CN110016329A (en) * | 2019-05-14 | 2019-07-16 | 西南石油大学 | A kind of high temperature and high salt oil deposit original position emulsification system and its application |
| CN110408374A (en) * | 2019-06-17 | 2019-11-05 | 南京先进生物材料与过程装备研究院有限公司 | A kind of method and device using micro flow field reaction technology preparation nanometer cladding oil displacement agent |
| CN110408374B (en) * | 2019-06-17 | 2022-03-11 | 南京先进生物材料与过程装备研究院有限公司 | Method and device for preparing nano-coated oil displacement agent by adopting micro-flow field reaction technology |
| CN110776898B (en) * | 2019-11-22 | 2022-02-01 | 中国石油大学(华东) | Viscoelastic nano-magnetic fluid for improving crude oil recovery ratio of tight reservoir and preparation method thereof |
| CN110776898A (en) * | 2019-11-22 | 2020-02-11 | 中国石油大学(华东) | Viscoelastic nano-magnetic fluid for improving crude oil recovery ratio of tight reservoir and preparation method thereof |
| US11597869B2 (en) | 2020-06-29 | 2023-03-07 | Saudi Arabian Oil Company | Magnetically labeled hybrid nanosurfactants for oil reservoir applications |
| WO2022005493A1 (en) * | 2020-06-29 | 2022-01-06 | Saudi Arabian Oil Company | Magnetically labeled hybrid nanosurfactants for oil reservoir applications |
| CN112251206A (en) * | 2020-09-24 | 2021-01-22 | 南京师范大学 | Magnetic nano oil displacement agent with black phosphorus as matrix and preparation method thereof |
| CN112210356B (en) * | 2020-09-24 | 2022-12-16 | 南京师范大学 | Magnetic-base black phosphorus nano oil displacement agent and preparation method thereof |
| CN112210356A (en) * | 2020-09-24 | 2021-01-12 | 南京师范大学 | Magnetic-base black phosphorus nano oil displacement agent and preparation method thereof |
| US11618847B2 (en) | 2020-10-23 | 2023-04-04 | Southwest Petroleum University | Methods for preparing and applying a nano emulsifier |
| CN112266775A (en) * | 2020-10-23 | 2021-01-26 | 西南石油大学 | Preparation of in-situ nano emulsifier and oil reservoir application method |
| CN112591848A (en) * | 2020-12-23 | 2021-04-02 | 清华海峡研究院（厦门） | Oil-water separation method and system for oily sewage |
| CN113122217A (en) * | 2021-04-23 | 2021-07-16 | 西南石油大学 | Carbon-based amphiphilic nano-flow for oil displacement and preparation method thereof |
| CN113122217B (en) * | 2021-04-23 | 2022-07-05 | 西南石油大学 | Carbon-based amphiphilic nano-flow for oil displacement and preparation method thereof |
| CN115261002A (en) * | 2021-04-30 | 2022-11-01 | 中国石油天然气股份有限公司 | Superparamagnetic graphene oxide oil displacement agent and preparation method thereof |
| CN115261002B (en) * | 2021-04-30 | 2024-03-01 | 中国石油天然气股份有限公司 | Superparamagnetism graphene oxide oil displacement agent and preparation method thereof |
| CN113527601A (en) * | 2021-06-28 | 2021-10-22 | 西安石油大学 | Nano oil displacement agent for high-temperature high-salinity oil-gas field and preparation method thereof |
| CN113527601B (en) * | 2021-06-28 | 2023-06-16 | 西安石油大学 | Nanometer oil displacement agent for high-temperature high-salt oil-gas field and preparation method thereof |
| CN113332966B (en) * | 2021-07-16 | 2023-05-09 | 黑龙江省科学院高技术研究院 | Cannabidiol specific adsorption magnetic molecular polymer material and preparation method thereof |
| CN113332966A (en) * | 2021-07-16 | 2021-09-03 | 黑龙江省科学院高技术研究院 | Cannabidiol specific adsorption magnetic molecule polymer material and preparation method thereof |
| CN115449361A (en) * | 2022-09-30 | 2022-12-09 | 湖北三雄科技发展有限公司 | Microbial oil displacement agent for high-temperature high-salinity oil reservoir and preparation method thereof |
| CN115449361B (en) * | 2022-09-30 | 2023-10-10 | 湖北三雄科技发展有限公司 | Microbial oil displacement agent for high-temperature high-mineralization oil reservoir and preparation method thereof |
| CN116119796A (en) * | 2023-03-03 | 2023-05-16 | 斯坦德技术工程(青岛)有限公司 | Ferroferric oxide nano-composite adsorption flocculant and preparation method thereof |
| CN116119796B (en) * | 2023-03-03 | 2023-07-14 | 斯坦德技术工程(青岛)有限公司 | Ferroferric oxide nano-composite adsorption flocculant and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109251741A (en) | A kind of magnetic Nano oil displacement agent and preparation method thereof | |
| Hu et al. | Fabrication, properties and applications of Janus particles | |
| CN103937478B (en) | Preparation method of nanofluid for improving oil recovery | |
| CN103214631B (en) | Temperature-sensitive modified silica nanosphere and preparation method and application thereof | |
| US11802233B2 (en) | Permeability-enhancing flooding system for tight oil reservoirs, and preparation and use thereof | |
| CN113136193B (en) | High-activity nano oil displacement agent and preparation method thereof | |
| CN111454707B (en) | Preparation method and application of 2D nanosheet oil displacement agent | |
| Liu et al. | Utilization of Janus-silica/surfactant nanofluid without ultra-low interfacial tension for improving oil recovery | |
| CN111094505A (en) | Liquid medicine for crude oil recovery | |
| CN106085401A (en) | A kind of water injection in low-permeability oilfield well increasing injection agent and preparation method and application | |
| Ngouangna et al. | Influence of (3–Aminopropyl) triethoxysilane on silica nanoparticle for enhanced oil recovery | |
| CN111303355B (en) | High-temperature-resistant silicon dioxide Janus colloidal particle plugging agent and preparation method and application thereof | |
| CN110841572B (en) | Intelligent micro-nano capsule, preparation method and application thereof | |
| CN110776898B (en) | Viscoelastic nano-magnetic fluid for improving crude oil recovery ratio of tight reservoir and preparation method thereof | |
| CN109456744A (en) | A kind of nanometer wetting agent and its preparation method and application based on nonionic surfactant modification | |
| CN111019621B (en) | Blocking remover and preparation method thereof | |
| CN106634923B (en) | The nano silica and oil recovering nano-fluid of surface modification | |
| Liu et al. | Functional janus-SiO2 nanoparticles prepared by a novel “cut the gordian knot” method and their potential application for enhanced oil recovery | |
| CN110439517B (en) | Oil displacement method suitable for heavy oil reservoir | |
| Chen et al. | Preparation and characterization of temperature sensitive iron oxide nanoparticle and its application on enhanced oil recovery | |
| Cao et al. | Carbon dots nanofluid: Reducing injection pressure in unconventional reservoir by regulating oil/water/rock interfacial properties | |
| CN114806533A (en) | Preparation method of amphiphilic Janus graphene oxide oil-displacement nano fluid | |
| CN107814874B (en) | A kind of nanoscale temperature-salty resisting cross-linked polymer microballoon and preparation method thereof | |
| CN107629778A (en) | A kind of displacement of reservoir oil Gemini complexed surfactants and preparation method thereof | |
| CN113637465A (en) | Oil displacement method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190122 |