CN106590597A - High-temperature high-mineralization-degree oil displacement agent composition for oil reservoirs and preparation method thereof - Google Patents
High-temperature high-mineralization-degree oil displacement agent composition for oil reservoirs and preparation method thereof Download PDFInfo
- Publication number
- CN106590597A CN106590597A CN201510683872.7A CN201510683872A CN106590597A CN 106590597 A CN106590597 A CN 106590597A CN 201510683872 A CN201510683872 A CN 201510683872A CN 106590597 A CN106590597 A CN 106590597A
- Authority
- CN
- China
- Prior art keywords
- oil
- displacement agent
- high temperature
- oil displacement
- hydrophobic
- 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
- C09K8/588—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
-
- 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
- C08F2/00—Processes of polymerisation
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
- C08F2/22—Emulsion polymerisation
- C08F2/24—Emulsion polymerisation with the aid of emulsifying agents
- C08F2/28—Emulsion polymerisation with the aid of emulsifying agents cationic
-
- 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
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/56—Acrylamide; Methacrylamide
-
- 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
Abstract
The invention provides a high-temperature high-mineralization-degree oil displacement agent composition for oil reservoirs and a preparation method thereof to mainly solve the problems of poor temperature resistance, poor salt resistance, poor aging resistance, poor shearing resistance and poor displacement effect of a conventional polymer oil displacement agent in the prior art. The technical scheme is that the high-temperature high-mineralization-degree oil displacement agent composition for the oil reservoirs comprises the following components in parts by mass: 0.5-99.5 parts of a hydrophobic associating acrylamide copolymer, and 0.5-99.5 parts of a surfactant, wherein the hydrophobic associating acrylamide copolymer is obtained by copolymerization of acrylamide, a temperature-resistant salt-resistant monomer, and a hydrophobic monomer; the structure of the hydrophobic monomer is shown by a formula (I); the surfactant is shown by a formula (II), and R is alkyl of C1-C18; X is an oxygen group, imidogen, or a carbonyl oxygen group; and p=0-50, and q=1-50. By adopting the technical scheme, the problems are well solved, and the high-temperature high-mineralization-degree oil displacement agent composition can be applied to industrial production and oilfield enhanced oil recovery.
Description
Technical field
The present invention relates to tertiary oil recovery field, and in particular to a kind of high temperature and high salinity oil reservoir oil displacement agent compositionss and its preparation
Method.
Background technology
The universal performance of exploitation of oil-gas field water-soluble polymer requires mainly have：Water solublity, tackifying, suspension, shearing
Dilution property and thixotropy, stability and seepage characteristic meet requirement of oil-gas mining engineering etc..Although in anaerobic, without bivalence
Super high molecular weight polyacrylamide still can improve (such as 120 DEG C) tar productivity under higher temperature in ionic environment, but current three
The water-soluble polymer commonly used in secondary oil recovery is many for also there are problems that during the displacement of reservoir oil.The polyacrylamide aqueous amine such as when temperature is higher
Solution is serious；After formation temperature is more than 75 DEG C, as formation temperature is raised, super high molecular weight polyacrylamide precipitates to form quickening；
High temperature and high salt is easily caused super high molecular weight polyacrylamide and is precipitated out from aqueous solution, and the more high this phenomenon of degree of hydrolysis is more
Significantly；Solution viscosity is very sensitive to temperature and salinity, and the reservation viscosity of solution is very low in high temperature and high salt environment.
In recent years, domestic and international researcher the displacement of reservoir oil has been carried out with temperature-resistant and anti-salt type acrylic amide macromole it is substantial amounts of research so that
It meets special reservoir condition during field use.For example, carried by introducing big side base or rigid side base on main polymer chain
The heat stability of high polymer, introducing suppress the monomer or the monomer insensitive to salt of hydrolysis to carry out copolymerization to improve polymer
Hydrolysis and anti-salt property, or improve the temperature-resistant anti-salt performance of polymer by the heat resistance and salt tolerance of hydrophobic group.But by
Polymer is caused to be difficult to reach high molecular or product with higher cost in the quality or price of comonomer, it is raw in industry
Product can be somewhat limited in tertiary oil recovery practical application.In tertiary oil recovery at present, the poly- of temperature-resistant anti-salt requirement can be met
Compound seldom, be not price too higher position be unstable properties, particularly can not meet more than salinity 100000mg/L, 85 DEG C
The requirement of high temperature above.
Hydrophobic associated water-soluble polymer refers to the class water with a small amount of hydrophobic group on polymer hydrophilicity macromolecular chain
Soluble polymer.In hydrophobic associated water-soluble polymer aqueous solution, due to hydrophobic work between the hydrophobic group on its strand
With and there is gathering, macromolecular chain produces intramolecular and Interpolymer Association, hydrodynamic volume increase, and aqueous medium viscosity is improved,
So that such polymer has the special performances such as good thickening thickening, temperature-resistant anti-salt；In addition, larger side base is to polymer
Molecular backbone plays shielding action, weakens impact of the salt ion to carboxylic acid ion group, and larger side base also has necessarily
Space steric effect, strengthen chain rigidity.The SOLUTION PROPERTIES such as the unique thickening of hydrophobic associated polymer, salt resistance, anti-shearing,
In making it be applied to high salt, high shear oil reservoir development as novel polymeric oil-displacing agent, have a good application prospect.
Domestic and international researcher has carried out numerous studies in terms of hydrophobic associated polymer, and achieves preferably progress and achievement.
Generally hydrophobic associated polymer is prepared using water solution polymerization process, but due to hydrophobic monomer water-insoluble and in aqueous with
Micelle form is present, and ultimately results in the randomness of polymer molecule chain structure and the relatively low final conversion ratio of monomer.It is Chinese special
Sharp CN1891725A is reported and is synthesized the hydrophobic list of dendroid under the catalytic action of concentrated sulphuric acid by acrylonitrile and diisobutylene
Body N- (1,1,3,3- tetramethyl butyl) acrylamide, prepares afterwards the polypropylene of hydrophobic association using micell polymerization method
Amide oil displacement agent, and there is good adhesion-promoting effect in 85 DEG C, 30000mg/L salinity saline, but it is prepared by the patent
Concentrated sulphuric acid oxidisability employed in the reaction of hydrophobic monomer is too strong, and catalytic reaction process is very violent.Chinese patent
CN1793189A has synthesized the hydrophobic association of sodium acrylate, acrylamide and alkyl phenyl allyl ether using micelle copolymerization method
Type terpolymer, the polymer presents preferable Efficient Adhesive Promotion, but the building-up process of alkyl phenyl allyl ether monomers compared with
For complexity.In addition, in hydrophobic associated polymer obtained in micelle copolymerization method, hydrophobic units are more with the distribution of micro- block form,
Cause serious microstructure heterogeneity, it is unfavorable to polymer adhesion-promoting performance.Chinese patent CN101293944A, CN
101148582A has synthesized condensed-nuclei aromatics containing vinyl as the hydrophobic associated polymer of hydrophobic monomer, but polymerization reaction time
It is longer, only have rated adhesion-promoting effect and NaCl concentration of the polymer in 45 DEG C of fresh water, saline<100000mg/L、CaC12
Concentration<The salt resistance situation of 1000mg/L.Document (synthesis of new family's hydrophobic association polyacrylamide and its rheology of aqueous solution
Performance, paper in 2007) it is successfully prepared the copolymerization with hydrophobic block structure in the method for homogeneous combined polymerization in aqueous
Thing NaAMC14S/AM, by adjusting the consumption of additional electrolyte the length of hydrophobic micro- block is controlled, and overcomes micelle
The loaded down with trivial details shortcoming of combined polymerization post processing, but the work biases toward theoretical research, not in actual oil field mineral reserve condition especially high temperature
Perform an analysis and evaluate under the conditions of (more than 85 DEG C), high salinity (more than 100000mg/L).
Conversed phase micro emulsion copolymerization technology be by water-soluble monomer and hydrophobic monomer under water-in-oil emulsifier effect, be with Organic substance
Continuous phase forms W/O microemulsions, then the method for causing polymerization with oil-soluble and/or water soluble starter, and its advantage is polymerization
Response speed is fast, and molecular weight of product is high, and narrow molecular weight distribution, monomer conversion is higher, and latex solution is stable, it is easy to store
Deposit, post processing is simple, can be directly used for subsequent applications or makes powder, more soluble.Dredge in polymer obtained in the method
Water unit is distributed in polymer molecular chain with random or micro-block structure, and hydrophobe association effect is preferable, it is easy to intermolecular
Associate, adhesion-promoting effect is more excellent.When the hydrophobic associated polymer microemulsion for preparing in this way is used as oil field oil displacement agent, glue
Emulsifying agent present in breast not only can produce " collaboration " effect with hydrophobic associated polymer, and can serve as in combination flooding
Surfactant, play good emulsification, reduce oil water interfacial tension, improve oil recovery factor.From industrialization angle
From the point of view of, polymer micro-emulsion system can play the function of " one multiplex ", and production cost is greatly reduced.
The content of the invention
One of the technical problem to be solved is that conventional polymer oil displacement agent has heatproof, salt resistance, resists in prior art
A kind of problem of aging, anti-shear performance and Flooding Efficiency difference, there is provided high temperature and high salinity oil reservoir oil displacement agent compositionss,
The high temperature and high salinity oil reservoir is used in tertiary oil production in oil field field with oil displacement agent compositionss, excellent heatproof can be shown
The Flooding Efficiency that salt-resistance, aging resistance, anti-shear performance are become reconciled.
The two of the technical problem to be solved are to provide a kind of oily with high temperature and high salinity that is solving one of technical problem
Hide with the corresponding preparation method of oil displacement agent compositionss, first from suitable catalyst and reactant ratio, under temperate condition
Reaction is obtained the hydrophobic monomers shown in formula (I) structure, afterwards using conversed phase micro emulsion copolymerization method, from suitable emulsifying
Agent and/or co-emulsifier and oil-based solvent so that the stable polymerization reaction of microemulsion, process relation control, prepare hydrophobic association
Acrylamide copolymer；By it with sulphonate betaine surfactant compound after, obtain the high temperature and high salinity oil reservoir displacement of reservoir oil
Agent compositionss.
To solve one of above-mentioned technical problem, the technical solution used in the present invention is as follows：A kind of high temperature and high salinity oil reservoir drives
Oil agent composition, in terms of mass fraction, including following components：
(1) 0.5～99.5 part of hydrophobic association acrylamide copolymer；
(2) 0.5～99.5 parts of surfactants；
The hydrophobic association acrylamide copolymer, is obtained by the copolymerization of acrylamide, temperature-resistant anti-salt monomer, hydrophobic monomers；
Shown in the structure of the hydrophobic monomers such as formula (I)：
Wherein, R1、R2、R7、R8Each independently take from hydrogen atom, methyl or ethyl；R3、R4、R5、R6Each solely
It is vertical to take from hydrogen atom, C1～C16Fat-based；
The surfactant is sulphonate betaine；Shown in the structure of the sulphonate betaine such as formula (II)：
Wherein, R is C1～C18Alkyl；X is epoxide, imido grpup or carbonyl epoxide；P=0～50；Q=1～50.
In above-mentioned technical proposal, the R3、R4、R5、R6Each independently take from hydrogen atom, C1～C16Alkyl or alcoxyl
Base.The R is C1～C18Aliphatic group or aryl radical.
In above-mentioned technical proposal, the molecular weight of the hydrophobic association acrylamide copolymer is 50,000～15,000,000, described
The ratio of the amount of the material of acrylamide, temperature-resistant anti-salt monomer and hydrophobic monomers is 80～99：0～18：0～2.
In above-mentioned technical proposal, the amount of the material of the hydrophobic monomers is more than 0.
In above-mentioned technical proposal, the temperature-resistant anti-salt monomer is selected from Methacrylamide, NIPA, N- hydroxyl first
Base acrylamide, N-N- DMAAs, N- vinylpyridines, NVP, acrylic acid, methyl-prop
Olefin(e) acid, maleic acid, fumaric acid, vinyl sulfonic acid, vinylbenzenesulfonic acid, allyl sulphonic acid, allyl benzene sulfonic acid, 2- third
Acrylamide base -2- methyl propane sulfonic acids and/or its alkali metal salt and ammonium salt, dimethyl ethyl allyl ammonium chloride, dimethyl diene
Propyl ammonium chloride, acrylyl oxy-ethyl-trimethyl salmiac, acryloxyethyldimethyl ethyl phosphonium bromide ammonium, methacryl
At least one in oxy-ethyl-trimethyl salmiac, 2- acrylamido -2- trimethoxysilyl propyl methacrylate ammonium chlorides.
In above-mentioned technical proposal, the acrylamide, temperature-resistant anti-salt monomer and hydrophobic monomers are acted in redox initiator
Under, described high temperature and high salinity oil reservoir oil displacement agent compositionss are obtained by conversed phase micro emulsion copolymerization reaction；Described is anti-phase micro-
Emulsion, in terms of parts by weight, comprising following components：1) 15～70 parts of oil-based solvent；2) 2～20 parts of emulsifying agent and/
Or co-emulsifier；3) 0.001～10 part of hydrophobic monomers；4) 10～70 parts of acrylamide；5) 1～50 part of heatproof
Salt resistance monomer；6) 10～60 parts of water.
In above-mentioned technical proposal, described oil-dissolving solvent selected from thiacyclohexane, hexane, heptane, octane, isobutyltrimethylmethane., benzene,
In toluene, ethylbenzene, dimethylbenzene, isopropylbenzene, liquid paraffin, vegetable oil, white oil, gasoline, diesel oil and kerosene at least one
Kind.Described emulsifying agent is selected from span, tween, alkylphenol polyoxyethylene, fatty alcohol-polyoxyethylene ether, dodecyl sulfur
Sour sodium, dodecyl sodium sulfate, dodecylbenzene sodium sulfonate, trimethyl quaternary ammonium salt, double dodecyl dimethyls
It is quaternary ammonium salt, hexadecanyl trimethyl quaternary ammonium salt, di-cetyl dimethyl quaternary ammonium salt, octadecyl trimethyl quaternary ammonium salt, double
At least one in octadecyldimethyl quaternary ammonium salt；The quaternary ammonium salt is chlorination ammonium salt or bromination ammonium salt；Described helps emulsifying
Agent selected from ethanol, propanol, isopropanol, n-butyl alcohol, isobutanol, the tert-butyl alcohol, amylalcohol, hexanol, ethylene glycol, Propylene Glycol,
Butanediol, pentanediol, hexanediol, glycerol, sodium formate, potassium formate, ammonium formate, sodium acetate, potassium acetate, ammonium acetate,
Adipic acid sodium, sodium malonate etc., its consumption is 0.01～10wt% of emulsifier.
In above-mentioned technical proposal, described redox initiator is made up of Oxidizing and Reducing Agents.Wherein, it is described
At least one of the oxidant in Ammonium persulfate., potassium peroxydisulfate, sodium peroxydisulfate, hydrogen peroxide；Described reducing agent is selected from
At least one in sodium sulfite, Potassium acid sulfite, sodium sulfite, potassium sulfite, sodium thiosulfate, ferrous chloride；
Described oxidant and the mass ratio of described reducing agent is 0.1～8：1, its total consumption is the 0.001～2% of monomer weight.
To solve the two of above-mentioned technical problem, the technical solution used in the present invention is as follows：A kind of high temperature and high salinity oil reservoir drives
The preparation method of oil agent composition, it is characterised in that comprise the following steps：
1) preparation of hydrophobic monomers：By acrylonitrile or alpha-alkyl acrylonitrile and the diolefin chemical combination shown in formula (II) structure
Thing is dispersed in the mixed solution of sulfur trioxide, pyridine and glacial acetic acid, and under the conditions of 10～50 DEG C, reaction 0.5～6 is little
When, the hydrophobic monomers shown in formula (I) structure are obtained；Described alpha-alkyl acrylonitrile is Alpha-Methyl acrylonitrile or α-ethyl
Acrylonitrile；
Wherein, R1、R2Each independently take from hydrogen atom, methyl or ethyl；R3、R4、R5、R6Each independently take from hydrogen
Atom, C1～C16Fat-based.
2) preparation of water phase：Acrylamide, temperature-resistant anti-salt monomer, oxidant are dissolved in into the 90～99.9% of the water gross weight
Water in, adjust solution ph to 7～12 with alkali liquor；Reducing agent is individually dissolved in the water of surplus；
3) preparation of microemulsion system：Emulsifying agent and/or co-emulsifier, hydrophobic monomers are dissolved in oil-based solvent, will be walked
Rapid 2) the middle water prepared is added in oil phase, is stirred, and obtains transparent or semitransparent Reverse Microemulsion System；
4) conversed phase micro emulsion copolymerization reaction：To step 3) the logical noble gases deoxygenation of Reverse Microemulsion System, add step 2)
The reducing agent aqueous solution of middle preparation, mix homogeneously, the initiated polymerization at 5～45 DEG C continues anti-up to after exothermic peak temperature
Answer 0.5～6 hour, obtain transparent or semitransparent high temperature and high salinity oil reservoir oil displacement agent compositionss microemulsion system；Jing Jing
The post-processing approachs such as breakdown of emulsion, precipitation, washing, drying obtain described high temperature and high salinity oil reservoir oil displacement agent compositionss；
5) by the surfactant mix homogeneously shown in the desired amount of hydrophobic association acrylamide copolymer, formula (II) structure,
Obtain described high temperature and high salinity oil reservoir oil displacement agent compositionss.
In above-mentioned technical proposal, C1～C16Fat-based be more preferably C1～C16Alkyl or alkoxyl.
Double olefin compound in above-mentioned technical proposal, shown in described acrylonitrile or alpha-alkyl acrylonitrile, formula (III) structure
It is 1 with the mol ratio of sulfur trioxide：0.5～1.5：0.01～1；Described acrylonitrile or alpha-alkyl acrylonitrile and pyridine and ice vinegar
The volume ratio of acid is 1：0.1～5：1～10.
In above-mentioned technical proposal, described application those skilled in the art can be used according to prior art, such as in oil field
The high temperature and high salinity oil reservoir is directly used into clear water, high-salinity brine or oil with oil displacement agent compositionss using needs in oil recovery
Field scene recovered water is prepared, and individually or after compounding with other oil field chemicals is applied to make oil displacement agent in tertiary oil production in oil field to carry
The field operations such as high oil recovery factor.
The inventive method it is critical only that using special hydrophobic monomers and conversed phase micro emulsion copolymerization method, conventional water-soluble
Property polyacrylamide macromolecular chain on introduce special construction hydrophobic monomers unit, by the hydrophobic association acrylamide copolymer with
The high temperature and high salinity oil reservoir oil displacement agent compositionss that sulphonate betaine surfactant compound is obtained, can in 90 DEG C of high temperature,
There is Interpolymer Association, Efficient Adhesive Promotion significantly (hydrophobic association acrylamide copolymerization in the saline of 180000mg/L high salinities
Solution viscosity when concentration 1250mg/L of thing, the concentration of sulphonate betaine surfactant are 3150mg/L reaches
200.9mPas), viscosity retention ratio is up to more than 95.0% after aging 45 days under oxygen free condition, high temperature and high salinity oil reservoir
Excellent heatproof, salt-resistance and ageing resistace are shown with oil displacement agent compositionss；In addition hydrophobic association type monomer could also function as
To certain physical crosslinking and the effect of chemical crosslinking, it is high that cross-linked structure present in macromole is also remarkably improved high temperature
The salinity oil reservoir anti-shear performance of oil displacement agent compositionss, concentration 1250mg/L when hydrophobic association acrylamide copolymer,
When the concentration of sulphonate betaine surfactant is 3150mg/L, 24 are stood after 2000 revs/min of down cut half an hour little
When, viscosity retention ratio is still up to more than 94.7%；Produced with oil displacement agent compositionss and Pu 2-529 using high temperature and high salinity oil reservoir
Oil water interfacial tension between fuel-displaced as little as 0.080mN/m, achieves preferable technique effect.Can be needed height according to application
Warm high salinity reservoirs oil displacement agent compositionss are directly prepared with clear water, high-salinity brine or Oil Field recovered water, individually
Or be applied to make oil displacement agent in harsh oil reservoir to improve the field operations such as oil recovery factor after compounding with other oil field chemicals.
Fig. 1 is the infrared spectrogram of hydrophobic association type acrylamide copolymer in embodiment 1.
Below by embodiment, the invention will be further elaborated.
Specific embodiment
【Embodiment 1】
1st, the synthesis of hydrophobic monomers：
Under nitrogen protection, 1.5g sulfur trioxide, 6mL pyridines are stirred at room temperature, uniform dissolution is in filling 55mL
In the glass reaction kettle of glacial acetic acid, then be slowly added dropwise in the mixed solution into 8.2g acrylonitrile, after be added dropwise to 27.5g 1,
3- bis- (Alpha-Methyl vinyl) -5- tert-butyl benzenes, continuous stirring and react 4 hours at 33 DEG C, import 300mL go from
Sub- water, stands after stirring, and Jing is filtered, washes, is dried, and obtains hydrophobic monomers 1,3- bis- (2 '-acrylamido)
Isopropyl -5- tert-butyl benzenes, yield is 92.5%.
2nd, the synthesis of hydrophobic association acrylamide copolymer：
To in reactor add 72g white oils, 27.5g sorbitan monooleates, 12g OPEOs (10),
1.70g 1,3- bis- (2 '-acrylamido) isopropyl -5- tert-butyl benzene monomers, stirring is allowed to mix homogeneously, controls kettle interior temperature
Spend for 36 DEG C, stir speed (S.S.) is 310rpm.58g water, 72g acrylamides, 5g N- vinylpyridines are added in batching kettle
Pyrrolidone, 0.2g disodiumedetates, 0.25g isopropanols, 2.2g Ammonium persulfate .s, stirring is allowed to be uniformly dissolved, and uses
NaOH adjusts pH value to 9.8；In addition, 1.2g sodium thiosulfate is dissolved in 10g deionized waters, it is standby.By water phase
In importing reactor, stirring is allowed to fully emulsified, adds 6g sodium thiosulfate solutions, and system temperature rise sets to 65 DEG C
Temperature of reaction kettle is 72 DEG C, continues to react 2 hours, after terminating reaction, the post processing such as Jing breakdowns of emulsion, precipitation, washing, drying
Method obtains described hydrophobic association acrylamide copolymer.
3rd, the high temperature and high salinity oil reservoir preparation of oil displacement agent compositionss：
0.63g is added in 500g saline solutions (total salinity 180000mg/L, calcium ions and magnesium ions concentration 10000mg/L)
Hydrophobic association Acrylamide Terpolymers, 1.26g sulphonate betaines (R is octadecyl, and X is epoxide, p=3, q=11),
It is uniformly mixed, obtains the aqueous solution of high temperature and high salinity oil reservoir oil displacement agent compositionss.
Using following methods or standard testing gained high temperature and high salinity the oil reservoir structure and performance of oil displacement agent compositionss：Using
Nicolet-20DXB types infrared spectrophotometer tests the infrared spectrogram of hydrophobic association acrylamide copolymer；Press
GB/T12005.2-89 polyacrylamide solid contents method determines the solid content of hydrophobic association acrylamide copolymer；Press
GB/T12005.10-92 Molecular Weight for Polyacrylamide determines the characteristic that (viscosimetry) determines hydrophobic association acrylamide copolymer
Viscosity number, and by [η]=3.73 × 10-4Mw 0.66Calculate molecular weight；The high temperature for testing 3760mg/L concentration using Haake torque rheometer is high
The salinity oil reservoir saline solution (total salinity 180000mg/L, calcium ions and magnesium ions concentration 10000mg/L) of oil displacement agent compositionss
In 90 DEG C, 7.34s-1Under apparent viscosity；The high temperature and high salinity oil reservoir for testing 3760mg/L concentration by Q/SH1020 is used
Thermal stability of the saline solution of oil displacement agent compositionss under 90 DEG C of oxygen free conditions after aging 45 days；Using Haake torque rheometer
The high temperature and high salinity oil reservoir of test 3760mg/L concentration is with the saline solution of oil displacement agent compositionss in 2000 revs/min of down cuts
The apparent viscosity for standing 24 hours after half an hour；TX-500 type rotating interfacial tensimeters are produced using Texas ,Usa university
Determine the interfacial tension between high temperature and high salinity oil reservoir oil displacement agent compositionss and Pu 2-529 outputs oil.To above-mentioned analysis
As a result it is as shown in table 1.
【Embodiment 2】
The synthetic reaction process of hydrophobic monomers, hydrophobic association acrylamide copolymer and the high temperature and high salinity oil reservoir displacement of reservoir oil
The preparation process of agent compositionss, together【Embodiment 1】, simply by 1,3- bis- (2 '-acrylamido) isopropyl -5- uncles
The consumption of butyl benzene monomer is down to 0.7g.Using following methods or standard testing gained high temperature and high salinity oil reservoir oil displacement agent group
The structure and performance of compound：Hydrophobic association acrylamide is determined by GB/T12005.2-89 polyacrylamide solid contents method to be total to
The solid content of polymers；(viscosimetry) is determined by GB/T12005.10-92 Molecular Weight for Polyacrylamide determine hydrophobic association propylene
The intrinsic viscosity of amide copolymer, and by [η]=3.73 × 10-4Mw 0.66Calculate molecular weight；Tested using Haake torque rheometer
The high temperature and high salinity oil reservoir of 3760mg/L concentration with the saline solution of oil displacement agent compositionss (total salinity 180000mg/L,
Calcium ions and magnesium ions concentration 10000mg/L) in 90 DEG C, 7.34s-1Under apparent viscosity；3760mg/L is tested by Q/SH1020
Heat of the high temperature and high salinity oil reservoir of concentration with the saline solution of oil displacement agent compositionss under 90 DEG C of oxygen free conditions after aging 45 days
Stability；The salt of the high temperature and high salinity oil reservoir with oil displacement agent compositionss of 3760mg/L concentration is tested using Haake torque rheometer
The apparent viscosity that aqueous solution stands 24 hours after 2000 revs/min of down cut half an hour；Produced using Texas ,Usa university
TX-500 types rotating interfacial tensimeter determines high temperature and high salinity oil reservoir oil displacement agent compositionss with Pu 2-529 output oil
Between interfacial tension.It is as shown in table 1 to the result of above-mentioned analysis.
【Embodiment 3】
The synthetic reaction process of hydrophobic monomers, hydrophobic association acrylamide copolymer and the high temperature and high salinity oil reservoir displacement of reservoir oil
The preparation process of agent compositionss, together【Embodiment 1】, simply by 1,3- bis- (2 '-acrylamido) isopropyl -5- uncles
The consumption of butyl benzene monomer is down to 1.2g.Using following methods or standard testing gained high temperature and high salinity oil reservoir oil displacement agent group
The structure and performance of compound：Hydrophobic association acrylamide is determined by GB/T12005.2-89 polyacrylamide solid contents method to be total to
The solid content of polymers；(viscosimetry) is determined by GB/T12005.10-92 Molecular Weight for Polyacrylamide determine hydrophobic association propylene
The intrinsic viscosity of amide copolymer, and by [η]=3.73 × 10-4Mw 0.66Calculate molecular weight；Tested using Haake torque rheometer
The high temperature and high salinity oil reservoir of 3760mg/L concentration with the saline solution of oil displacement agent compositionss (total salinity 180000mg/L,
Calcium ions and magnesium ions concentration 10000mg/L) in 90 DEG C, 7.34s-1Under apparent viscosity；3760mg/L is tested by Q/SH1020
Heat of the high temperature and high salinity oil reservoir of concentration with the saline solution of oil displacement agent compositionss under 90 DEG C of oxygen free conditions after aging 45 days
Stability；The salt of the high temperature and high salinity oil reservoir with oil displacement agent compositionss of 3760mg/L concentration is tested using Haake torque rheometer
The apparent viscosity that aqueous solution stands 24 hours after 2000 revs/min of down cut half an hour；Produced using Texas ,Usa university
TX-500 types rotating interfacial tensimeter determines high temperature and high salinity oil reservoir oil displacement agent compositionss with Pu 2-529 output oil
Between interfacial tension.It is as shown in table 1 to the result of above-mentioned analysis.
【Embodiment 4】
The synthetic reaction process of hydrophobic monomers, the preparation process of hydrophobic association acrylamide copolymer, together【Embodiment 1】,
Simply the consumption of hydrophobic association Acrylamide Terpolymers, sulphonate betaine is transformed to into respectively 0.95g and 1.89g.Adopt
With following methods or the structure and performance of standard testing gained high temperature and high salinity oil reservoir oil displacement agent compositionss：Press
GB/T12005.2-89 polyacrylamide solid contents method determines the solid content of hydrophobic association acrylamide copolymer；Press
GB/T12005.10-92 Molecular Weight for Polyacrylamide determines the characteristic that (viscosimetry) determines hydrophobic association acrylamide copolymer
Viscosity number, and by [η]=3.73 × 10-4Mw 0.66Calculate molecular weight；The high temperature for testing 5650mg/L concentration using Haake torque rheometer is high
The salinity oil reservoir saline solution (total salinity 180000mg/L, calcium ions and magnesium ions concentration 10000mg/L) of oil displacement agent compositionss
In 90 DEG C, 7.34s-1Under apparent viscosity；The high temperature and high salinity oil reservoir for testing 5650mg/L concentration by Q/SH1020 is used
Thermal stability of the saline solution of oil displacement agent compositionss under 90 DEG C of oxygen free conditions after aging 45 days；Using Haake torque rheometer
The high temperature and high salinity oil reservoir of test 5650mg/L concentration is with the saline solution of oil displacement agent compositionss in 2000 revs/min of down cuts
The apparent viscosity for standing 24 hours after half an hour；TX-500 type rotating interfacial tensimeters are produced using Texas ,Usa university
Determine the interfacial tension between high temperature and high salinity oil reservoir oil displacement agent compositionss and Pu 2-529 outputs oil.To above-mentioned analysis
As a result it is as shown in table 1.
【Embodiment 5】
1st, the synthesis of hydrophobic monomers：
Under nitrogen protection, 2g sulfur trioxide, 5mL pyridines are stirred at room temperature, uniform dissolution is in filling 45mL ice
In the glass reaction kettle of acetic acid, then be slowly added dropwise in the mixed solution into 9g acrylonitrile, after be added dropwise to 22g to divinyl
Base benzene, continuous stirring and reacts 4 hours at 33 DEG C, imports 300mL deionized waters, stands after stirring, and passes through
Filter, wash, be dried, obtain hydrophobic monomers to two (1- acrylamidos) ethylo benzenes, yield is 95.7%.
2nd, the synthesis of hydrophobic association acrylamide copolymer：
75g normal heptane, 27.5g Brij 35s (3), 7.5g octyl phenol polyoxy second are added in reactor
Alkene ether (4), 0.5g are allowed to mix homogeneously to two (1- acrylamidos) ethyl benzene monomers, stirring, control temperature in the kettle
For 25 DEG C, stir speed (S.S.) is 255 revs/min.42g deionized waters, 65g acrylamides, 10g 2- third are added in batching kettle
Acrylamide base -2- methyl propane sulfonic acids, 0.15g disodiumedetates, the 0.88g tert-butyl alcohols, 1.5g sodium peroxydisulfates, stirring makes
Be uniformly dissolved, adjust pH value to 7.9 with NaOH；In addition, 2g sodium sulfite is dissolved in 15g deionized waters, it is standby
With.Water is mutually imported in reactor, stirring be allowed to fully emulsified, add 5g sodium sulfite aqueous solutions, system temperature rise to 71 DEG C,
Temperature of reaction kettle is set as 68 DEG C, continues to react 3 hours, after terminating reaction, Jing after breakdown of emulsion, precipitation, washing, drying etc.
Processing method obtains described hydrophobic association acrylamide copolymer.
3rd, the high temperature and high salinity oil reservoir preparation of oil displacement agent compositionss：
0.63g is added in 500g saline solutions (total salinity 180000mg/L, calcium ions and magnesium ions concentration 10000mg/L)
Hydrophobic association Acrylamide Terpolymers, 1.58g sulphonate betaines (R is octyl group, and X is epoxide, p=4.5, q=3),
It is uniformly mixed, obtains the aqueous solution of high temperature and high salinity oil reservoir oil displacement agent compositionss.
Using following methods or standard testing gained high temperature and high salinity the oil reservoir structure and performance of oil displacement agent compositionss：Press
GB/T12005.2-89 polyacrylamide solid contents method determines the solid content of hydrophobic association acrylamide copolymer；Press
GB/T12005.10-92 Molecular Weight for Polyacrylamide determines the characteristic that (viscosimetry) determines hydrophobic association acrylamide copolymer
Viscosity number, and by [η]=3.73 × 10-4Mw 0.66Calculate molecular weight；The high temperature for testing 4400mg/L concentration using Haake torque rheometer is high
The salinity oil reservoir saline solution (total salinity 180000mg/L, calcium ions and magnesium ions concentration 10000mg/L) of oil displacement agent compositionss
In 90 DEG C, 7.34s-1Under apparent viscosity；The high temperature and high salinity oil reservoir for testing 4400mg/L concentration by Q/SH1020 is used
Thermal stability of the saline solution of oil displacement agent compositionss under 90 DEG C of oxygen free conditions after aging 45 days；Using Haake torque rheometer
The high temperature and high salinity oil reservoir of test 4400mg/L concentration is with the saline solution of oil displacement agent compositionss in 2000 revs/min of down cuts
The apparent viscosity for standing 24 hours after half an hour；TX-500 type rotating interfacial tensimeters are produced using Texas ,Usa university
Determine the interfacial tension between high temperature and high salinity oil reservoir oil displacement agent compositionss and Pu 2-529 outputs oil.To above-mentioned analysis
As a result it is as shown in table 1.
【Embodiment 6】
The synthetic reaction process of hydrophobic monomers, hydrophobic association acrylamide copolymer and the high temperature and high salinity oil reservoir displacement of reservoir oil
The preparation process of agent compositionss, together【Embodiment 5】, simply will be to the use of two (1- acrylamidos) ethyl benzene monomers
Amount increases to 0.9g.Using following methods or standard testing gained high temperature and high salinity oil reservoir with the structure of oil displacement agent compositionss with
Performance：The solid content of hydrophobic association acrylamide copolymer is determined by GB/T12005.2-89 polyacrylamide solid contents method；
The spy that (viscosimetry) determines hydrophobic association acrylamide copolymer is determined by GB/T12005.10-92 Molecular Weight for Polyacrylamide
Property viscosity number, and by [η]=3.73 × 10-4Mw 0.66Calculate molecular weight；The high temperature of 4400mg/L concentration is tested using Haake torque rheometer
High salinity reservoirs saline solution (total salinity 180000mg/L, the calcium ions and magnesium ions concentration of oil displacement agent compositionss
10000mg/L) in 90 DEG C, 7.34s-1Under apparent viscosity；The high ore deposit of high temperature of 4400mg/L concentration is tested by Q/SH1020
Thermal stability of the change degree oil reservoir with the saline solution of oil displacement agent compositionss under 90 DEG C of oxygen free conditions after aging 45 days；Using
The high temperature and high salinity oil reservoir of Haake torque rheometer test 4400mg/L concentration is with the saline solution of oil displacement agent compositionss at 2000 turns
The apparent viscosity for standing 24 hours after/point down cut half an hour；TX-500 types rotation drop is produced using Texas ,Usa university
Interfacial tensimeter determines the interfacial tension between high temperature and high salinity oil reservoir oil displacement agent compositionss and Pu 2-529 outputs oil.It is right
The result of above-mentioned analysis is as shown in table 1.
【Embodiment 7】
The synthetic reaction process of hydrophobic monomers, hydrophobic association acrylamide copolymer and the high temperature and high salinity oil reservoir displacement of reservoir oil
The preparation process of agent compositionss, together【Embodiment 5】, simply will be to the use of two (1- acrylamidos) ethyl benzene monomers
Amount increases to 1.6g.Using following methods or standard testing gained high temperature and high salinity oil reservoir with the structure of oil displacement agent compositionss with
Performance：The solid content of hydrophobic association acrylamide copolymer is determined by GB/T12005.2-89 polyacrylamide solid contents method；
The spy that (viscosimetry) determines hydrophobic association acrylamide copolymer is determined by GB/T12005.10-92 Molecular Weight for Polyacrylamide
Property viscosity number, and by [η]=3.73 × 10-4Mw 0.66Calculate molecular weight；The high temperature of 4400mg/L concentration is tested using Haake torque rheometer
High salinity reservoirs saline solution (total salinity 180000mg/L, the calcium ions and magnesium ions concentration of oil displacement agent compositionss
10000mg/L) in 90 DEG C, 7.34s-1Under apparent viscosity；The high ore deposit of high temperature of 4400mg/L concentration is tested by Q/SH1020
Thermal stability of the change degree oil reservoir with the saline solution of oil displacement agent compositionss under 90 DEG C of oxygen free conditions after aging 45 days；Using
The high temperature and high salinity oil reservoir of Haake torque rheometer test 4400mg/L concentration is with the saline solution of oil displacement agent compositionss at 2000 turns
The apparent viscosity for standing 24 hours after/point down cut half an hour；TX-500 types rotation drop is produced using Texas ,Usa university
Interfacial tensimeter determines the interfacial tension between high temperature and high salinity oil reservoir oil displacement agent compositionss and Pu 2-529 outputs oil.It is right
The result of above-mentioned analysis is as shown in table 1.
【Embodiment 8】
The synthetic reaction process of hydrophobic monomers, the preparation process of hydrophobic association acrylamide copolymer, together【Embodiment 7】,
Simply the consumption of hydrophobic association Acrylamide Terpolymers, sulphonate betaine is transformed to into respectively 0.76g and 2.16g.Adopt
With following methods or the structure and performance of standard testing gained high temperature and high salinity oil reservoir oil displacement agent compositionss：Press
GB/T12005.2-89 polyacrylamide solid contents method determines the solid content of hydrophobic association acrylamide copolymer；Press
GB/T12005.10-92 Molecular Weight for Polyacrylamide determines the characteristic that (viscosimetry) determines hydrophobic association acrylamide copolymer
Viscosity number, and by [η]=3.73 × 10-4Mw 0.66Calculate molecular weight；The high temperature for testing 5800mg/L concentration using Haake torque rheometer is high
The salinity oil reservoir saline solution (total salinity 180000mg/L, calcium ions and magnesium ions concentration 10000mg/L) of oil displacement agent compositionss
In 90 DEG C, 7.34s-1Under apparent viscosity；The high temperature and high salinity oil reservoir for testing 5800mg/L concentration by Q/SH1020 is used
Thermal stability of the saline solution of oil displacement agent compositionss under 90 DEG C of oxygen free conditions after aging 45 days；Using Haake torque rheometer
The high temperature and high salinity oil reservoir of test 5800mg/L concentration is with the saline solution of oil displacement agent compositionss in 2000 revs/min of down cuts
The apparent viscosity for standing 24 hours after half an hour；TX-500 type rotating interfacial tensimeters are produced using Texas ,Usa university
Determine the interfacial tension between high temperature and high salinity oil reservoir oil displacement agent compositionss and Pu 2-529 outputs oil.To above-mentioned analysis
As a result it is as shown in table 1.
【Comparative example 1】
110g acrylamides, 20g 2- acrylamide-2-methylpro panesulfonic acids are dissolved in 260g deionized waters, 0.30g is added
Disodiumedetate, after stirring and dissolving is uniform, with the sodium hydrate aqueous solution and 1% mass concentration of 1% mass concentration
Hydrochloric acid solution adjust pH value to 7.7, regulating thermostatic bath temperature imports high pure nitrogen deoxygenation to 28 DEG C, after 30 minutes,
The ammonium persulfate aqueous solution 20g of 0.3% mass concentration, the sodium sulfite 24g of 0.25% mass concentration are added, is stirred and is drawn
Polyreaction is sent out, is reacted 3 hours, bath temperature is risen to into 46 DEG C, continue to react 2 hours, obtain gel polymerizate,
Glue is cut, the sodium hydrate aqueous solution 50g of 8% mass concentration, hydrolysis 2 hours at 90 DEG C, at 75 DEG C are added
Vacuum drying 8 hours, after size-reduced, screening acrylamide copolymer oil displacement agent, sample analysis are obtained.
Using following methods or the structure and performance of standard testing gained acrylamide copolymer oil displacement agent：Press
GB/T12005.2-89 polyacrylamide solid contents method determines the solid content of acrylamide polymer oil displacement agent；Press
GB/T12005.10-92 Molecular Weight for Polyacrylamide determines the characteristic of (viscosimetry) measure acrylamide polymer oil displacement agent and glues
Number, and by [η]=3.73 × 10-4Mw 0.66Calculate molecular weight；The acrylamide of 1250mg/L concentration is tested using Haake torque rheometer
The saline solution (total salinity 180000mg/L, calcium ions and magnesium ions concentration 10000mg/L) of polymer oil-displacing agent 90 DEG C,
7.34s-1Under apparent viscosity；The salt that the acrylamide polymer oil displacement agent of 1250mg/L concentration is tested by Q/SH1020 is water-soluble
Thermal stability of the liquid under 90 DEG C of oxygen free conditions after aging 45 days；1250mg/L concentration is tested using Haake torque rheometer
The apparent viscosity that the saline solution of acrylamide polymer oil displacement agent stands 24 hours after 2000 revs/min of down cut half an hour；
TX-500 types rotating interfacial tensimeter is produced using Texas ,Usa university and determines high temperature and high salinity oil reservoir oil displacement agent group
Interfacial tension between compound and Pu 2-529 outputs oil.It is as shown in table 1 to the result of above-mentioned analysis.
【Comparative example 2】
By 72g acrylamides, 5g NVPs,【Embodiment 1】In prepared (the 2 '-propylene of 1,3- bis-
Amide groups) isopropyl -5- tert-butyl benzene 1.70g, 25g dodecylbenzene sodium sulfonate, 0.5g disodiumedetates be dissolved in
In 150g deionized waters, after stirring and dissolving is uniform, with the sodium hydrate aqueous solution of 1% mass concentration and 1% mass concentration
Hydrochloric acid solution adjusts pH value to 8.0, and regulating thermostatic bath temperature imports high pure nitrogen deoxygenation to 30 DEG C, after 30 minutes,
The ammonium persulfate aqueous solution 20g of 0.28% mass concentration, the sodium sulfite 20g of 0.2% mass concentration are added, is stirred and is drawn
Polyreaction is sent out, is reacted 4 hours, bath temperature is risen to into 50 DEG C, continue to react 1.5 hours, obtained gel polymerization and produce
Thing, cuts glue, is vacuum dried 10 hours at 75 DEG C, acrylamide copolymer oil displacement agent after size-reduced, screening, sampling point
Analysis.
Using following methods or the structure and performance of standard testing gained acrylamide copolymer oil displacement agent：Press
GB/T12005.2-89 polyacrylamide solid contents method determines the solid content of acrylamide polymer oil displacement agent；Press
GB/T12005.10-92 Molecular Weight for Polyacrylamide determines the characteristic of (viscosimetry) measure acrylamide polymer oil displacement agent and glues
Number, and by [η]=3.73 × 10-4Mw 0.66Calculate molecular weight；The acrylamide of 1250mg/L concentration is tested using Haake torque rheometer
The saline solution (total salinity 180000mg/L, calcium ions and magnesium ions concentration 10000mg/L) of polymer oil-displacing agent 90 DEG C,
7.34s-1Under apparent viscosity；The salt that the acrylamide polymer oil displacement agent of 1250mg/L concentration is tested by Q/SH1020 is water-soluble
Thermal stability of the liquid under 90 DEG C of oxygen free conditions after aging 45 days；1250mg/L concentration is tested using Haake torque rheometer
The apparent viscosity that the saline solution of acrylamide polymer oil displacement agent stands 24 hours after 2000 revs/min of down cut half an hour；
TX-500 types rotating interfacial tensimeter is produced using Texas ,Usa university and determines high temperature and high salinity oil reservoir oil displacement agent group
Interfacial tension between compound and Pu 2-529 outputs oil.It is as shown in table 1 to the result of above-mentioned analysis.
【Comparative example 3】
To in reactor add 72g white oils, 27.5g sorbitan monooleates, 12g OPEOs (10),
1.70g N- (1,1,3,3- tetramethyl butyl) acrylamide monomer (is obtained) according to method in CN1891725A, stirs
Mix and be allowed to mix homogeneously, control temperature in the kettle for 36 DEG C, stir speed (S.S.) is 310rpm.In batching kettle add 58g water,
72g acrylamides, 5g NVPs, 0.2g disodiumedetates, 0.25g isopropanols, 2.2g over cures
Sour ammonium, stirring is allowed to be uniformly dissolved, and pH value is adjusted to 9.8 with NaOH；In addition, 1.2g sodium thiosulfate is dissolved in into 10g
It is standby in deionized water.Water is mutually imported in reactor, stirring is allowed to fully emulsified, add 6g sodium thiosulfate water-soluble
Liquid, system temperature rise sets temperature of reaction kettle as 72 DEG C to 80 DEG C, continues to react 2 hours, after terminating reaction, Jing breakdowns of emulsion,
The post-processing approach such as precipitation, washing, dry obtains acrylamide copolymer oil displacement agent.
Using following methods or the structure and performance of standard testing gained acrylamide copolymer oil displacement agent：Press
GB/T12005.2-89 polyacrylamide solid contents method determines the solid content of acrylamide polymer oil displacement agent；Press
GB/T12005.10-92 Molecular Weight for Polyacrylamide determines the characteristic of (viscosimetry) measure acrylamide polymer oil displacement agent and glues
Number, and by [η]=3.73 × 10-4Mw 0.66Calculate molecular weight；The acrylamide of 1250mg/L concentration is tested using Haake torque rheometer
The saline solution (total salinity 180000mg/L, calcium ions and magnesium ions concentration 10000mg/L) of polymer oil-displacing agent 90 DEG C,
7.34s-1Under apparent viscosity；The salt that the acrylamide polymer oil displacement agent of 1250mg/L concentration is tested by Q/SH1020 is water-soluble
Thermal stability of the liquid under 90 DEG C of oxygen free conditions after aging 45 days；1250mg/L concentration is tested using Haake torque rheometer
The apparent viscosity that the saline solution of acrylamide polymer oil displacement agent stands 24 hours after 2000 revs/min of down cut half an hour；
TX-500 types rotating interfacial tensimeter is produced using Texas ,Usa university and determines high temperature and high salinity oil reservoir oil displacement agent group
Interfacial tension between compound and Pu 2-529 outputs oil.It is as shown in table 1 to the result of above-mentioned analysis.
【Comparative example 4】
To in reactor add 72g white oils, 27.5g sorbitan monooleates, 12g OPEOs (10),
1.70g p-divinyl benzene monomers, stirring is allowed to mix homogeneously, controls temperature in the kettle for 36 DEG C, and stir speed (S.S.) is 310rpm.
In batching kettle add 58g water, 72g acrylamides, 5g NVPs, 0.2g disodiumedetates,
0.25g isopropanols, 2.2g Ammonium persulfate .s, stirring is allowed to be uniformly dissolved, and pH value is adjusted to 9.8 with NaOH；In addition, will
1.2g sodium thiosulfate is dissolved in 10g deionized waters, standby.Water is mutually imported in reactor, stirring is allowed to fully emulsified,
Add 6g sodium thiosulfate solutions, system temperature rise to set temperature of reaction kettle as 72 DEG C to 80 DEG C, continue to react 2 hours,
After terminating reaction, the post-processing approach such as Jing breakdowns of emulsion, precipitation, washing, drying obtains acrylamide copolymer oil displacement agent.
Using following methods or the structure and performance of standard testing gained acrylamide copolymer oil displacement agent：Press
GB/T12005.2-89 polyacrylamide solid contents method determines the solid content of acrylamide polymer oil displacement agent；Press
GB/T12005.10-92 Molecular Weight for Polyacrylamide determines the characteristic of (viscosimetry) measure acrylamide polymer oil displacement agent and glues
Number, and by [η]=3.73 × 10-4Mw 0.66Calculate molecular weight；The acrylamide of 1250mg/L concentration is tested using Haake torque rheometer
The saline solution (total salinity 180000mg/L, calcium ions and magnesium ions concentration 10000mg/L) of polymer oil-displacing agent 90 DEG C,
7.34s-1Under apparent viscosity；The salt that the acrylamide polymer oil displacement agent of 1250mg/L concentration is tested by Q/SH1020 is water-soluble
Thermal stability of the liquid under 90 DEG C of oxygen free conditions after aging 45 days；1250mg/L concentration is tested using Haake torque rheometer
The apparent viscosity that the saline solution of acrylamide polymer oil displacement agent stands 24 hours after 2000 revs/min of down cut half an hour；
TX-500 types rotating interfacial tensimeter is produced using Texas ,Usa university and determines high temperature and high salinity oil reservoir oil displacement agent group
Interfacial tension between compound and Pu 2-529 outputs oil.It is as shown in table 1 to the result of above-mentioned analysis.
【Comparative example 5】
The preparation process of hydrophobic association acrylamide copolymer is same【Comparative example 4】, simply by prepared hydrophobic association ternary
Acrylamide copolymer 0.95g, sulphonate betaine 1.89g, be added to 500g saline solutions (total salinity 180000mg/L,
Calcium ions and magnesium ions concentration 10000mg/L) in, preparation obtains the aqueous solution of high temperature and high salinity oil reservoir oil displacement agent compositionss.
Using following methods or standard testing gained high temperature and high salinity the oil reservoir structure and performance of oil displacement agent compositionss：Press
GB/T12005.2-89 polyacrylamide solid contents method determines the solid content of acrylamide polymer oil displacement agent；Press
GB/T12005.10-92 Molecular Weight for Polyacrylamide determines the characteristic of (viscosimetry) measure acrylamide polymer oil displacement agent and glues
Number, and by [η]=3.73 × 10-4Mw 0.66Calculate molecular weight；The high ore deposit of high temperature of 5650mg/L concentration is tested using Haake torque rheometer
The change degree oil reservoir saline solution (total salinity 180000mg/L, calcium ions and magnesium ions concentration 10000mg/L) of oil displacement agent compositionss
In 90 DEG C, 7.34s-1Under apparent viscosity；The high temperature and high salinity oil reservoir for testing 5650mg/L concentration by Q/SH1020 is used
Thermal stability of the saline solution of oil displacement agent compositionss under 90 DEG C of oxygen free conditions after aging 45 days；Using Haake torque rheometer
The high temperature and high salinity oil reservoir of test 5650mg/L concentration is with the saline solution of oil displacement agent compositionss in 2000 revs/min of down cuts
The apparent viscosity for standing 24 hours after half an hour；TX-500 type rotating interfacial tensimeters are produced using Texas ,Usa university
Determine the interfacial tension between high temperature and high salinity oil reservoir oil displacement agent compositionss and Pu 2-529 outputs oil.To above-mentioned analysis
As a result it is as shown in table 1.
Table 1
Claims (10)
1. a kind of high temperature and high salinity oil reservoir oil displacement agent compositionss, in terms of mass fraction, including following components：
(1) 0.5～99.5 part of hydrophobic association acrylamide copolymer；
(2) 0.5～99.5 parts of surfactants；
The hydrophobic association acrylamide copolymer, is obtained by the copolymerization of acrylamide, temperature-resistant anti-salt monomer, hydrophobic monomers；
Shown in the structure of the hydrophobic monomers such as formula (I)：
Wherein, R1、R2、R7、R8Each independently take from hydrogen atom, methyl or ethyl；R3、R4、R5、R6Each solely
It is vertical to take from hydrogen atom, C1～C16Fat-based；
The surfactant is sulphonate betaine；Shown in the structure of the sulphonate betaine such as formula (II)：
Wherein, R is C1～C18Alkyl；X is epoxide, imido grpup or carbonyl epoxide；P=0～50；Q=1～50.
2. high temperature and high salinity oil reservoir oil displacement agent compositionss according to claim 1, it is characterised in that described hydrophobic
The molecular weight of association acrylamide copolymer is 50,000～15,000,000, the acrylamide, temperature-resistant anti-salt monomer and hydrophobic
The ratio of the amount of the material of type monomer is 80～99：0～18：0～2.
3. high temperature and high salinity oil reservoir oil displacement agent compositionss according to claim 1 and 2, it is characterised in that described
Temperature-resistant anti-salt monomer is selected from Methacrylamide, NIPA, N hydroxymethyl acrylamide, N-N- dimethyl propylenes
Acrylamide, N- vinylpyridines, NVP, acrylic acid, methacrylic acid, maleic acid, fumaric acid, second
Olefin sulfonic acid, vinylbenzenesulfonic acid, allyl sulphonic acid, allyl benzene sulfonic acid, 2- acrylamide-2-methylpro panesulfonic acids and/
Or its alkali metal salt and ammonium salt, dimethyl ethyl allyl ammonium chloride, dimethyl diallyl ammonium chloride, acrylyl oxy-ethyl
Trimethyl ammonium chloride, acryloxyethyldimethyl ethyl phosphonium bromide ammonium, MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride, 2- third
At least one in acrylamide base -2- trimethoxysilyl propyl methacrylate ammonium chlorides.
4. high temperature and high salinity oil reservoir oil displacement agent compositionss according to claim 1, it is characterised in that the propylene
Amide, temperature-resistant anti-salt monomer and hydrophobic monomers are obtained under redox initiator effect by conversed phase micro emulsion copolymerization reaction
The high temperature and high salinity oil reservoir oil displacement agent compositionss；Described reverse micro emulsion, in terms of parts by weight, comprising following
Component：1) 15～70 parts of oil-based solvent；2) 2～20 parts of emulsifying agent and/or co-emulsifier；3) 0.001～10 part dredge
Water type monomer；4) 10～70 parts of acrylamide；5) 1～50 part of temperature-resistant anti-salt monomer；6) 10～60 parts of water.
5. high temperature and high salinity oil reservoir oil displacement agent compositionss according to claim 4, it is characterised in that the oiliness
Solvent is selected from thiacyclohexane, hexane, heptane, octane, isobutyltrimethylmethane., benzene, toluene, ethylbenzene, dimethylbenzene, isopropylbenzene, liquid
At least one in paraffin, white oil, gasoline, diesel oil and kerosene.
6. high temperature and high salinity oil reservoir oil displacement agent compositionss according to claim 4, it is characterised in that the emulsifying
Agent is selected from span, tween, alkylphenol polyoxyethylene, fatty alcohol-polyoxyethylene ether, sodium lauryl sulphate, dodecyl
Sodium sulfonate, dodecylbenzene sodium sulfonate, trimethyl quaternary ammonium salt, double dodecyl dimethyl quaternary ammonium salts, hexadecane
Base trimethyl quaternary ammonium salt, di-cetyl dimethyl quaternary ammonium salt, octadecyl trimethyl quaternary ammonium salt, double octadecyldimethyls
At least one in quaternary ammonium salt；The quaternary ammonium salt is chlorination ammonium salt or bromination ammonium salt.
7. high temperature and high salinity oil reservoir oil displacement agent compositionss according to claim 4, it is characterised in that described to help breast
Agent selected from ethanol, propanol, isopropanol, n-butyl alcohol, isobutanol, the tert-butyl alcohol, amylalcohol, hexanol, ethylene glycol, Propylene Glycol,
Butanediol, pentanediol, hexanediol, glycerol, sodium formate, potassium formate, ammonium formate, sodium acetate, potassium acetate, ammonium acetate,
Adipic acid sodium, sodium malonate etc., its consumption is 0.01～10wt% of emulsifier.
8. high temperature and high salinity oil reservoir oil displacement agent compositionss according to claim 4, it is characterised in that the oxidation
Reduction initiator is made up of Oxidizing and Reducing Agents；The oxidant selected from Ammonium persulfate., potassium peroxydisulfate, sodium peroxydisulfate,
At least one in hydrogen peroxide；The reducing agent selected from sodium sulfite, Potassium acid sulfite, sodium sulfite, potassium sulfite,
At least one in sodium thiosulfate, ferrous chloride；The mass ratio of the oxidant and the reducing agent is 0.1～8：1, its
Total consumption is the 0.001～2% of monomer weight.
9. the preparation method of oil displacement agent compositionss of the high temperature and high salinity oil reservoir described in a kind of any one of claim 1～8,
It is characterized in that comprising the following steps：
1) preparation of hydrophobic monomers：By acrylonitrile or alpha-alkyl acrylonitrile and the diolefin chemical combination shown in formula (III) structure
Thing is dispersed in the mixed solution of sulfur trioxide, pyridine and glacial acetic acid, and under the conditions of 10～50 DEG C, reaction 0.5～6 is little
When, the hydrophobic monomers shown in formula (I) structure are obtained；Described alpha-alkyl acrylonitrile is Alpha-Methyl acrylonitrile or α-ethyl
Acrylonitrile；
Wherein, R1、R2Each independently take from hydrogen atom, methyl or ethyl；R3、R4、R5、R6Each independently take from hydrogen
Atom, C1～C16Fat-based.
2) preparation of water phase：Acrylamide, temperature-resistant anti-salt monomer, oxidant are dissolved in into the 90～99.9% of the water gross weight
Water in, adjust solution ph to 7～12 with alkali liquor；Reducing agent is individually dissolved in the water of surplus；
3) preparation of microemulsion：Emulsifying agent and/or co-emulsifier, hydrophobic monomers are dissolved in oil-based solvent, by step 2)
The water of middle preparation is added in oil phase, stirring, obtains transparent or semitransparent reverse micro emulsion；
4) conversed phase micro emulsion copolymerization：To step 3) the logical noble gases deoxygenation of reverse micro emulsion, add step 2) in prepare
Reducing agent aqueous solution, mix homogeneously, the initiated polymerization at 5～45 DEG C, exothermic peak temperature occur after continue react
0.5～6 hour, obtain transparent or semitransparent hydrophobic association acrylamide copolymer microemulsion；It is post-treated to obtain described
Hydrophobic association acrylamide copolymer；
5) by the surfactant mix homogeneously shown in the desired amount of hydrophobic association acrylamide copolymer, formula (II) structure,
Obtain described high temperature and high salinity oil reservoir oil displacement agent compositionss.
10. high temperature and high salinity oil reservoir oil displacement agent compositionss and preparation method thereof according to claim 9, its feature
Be described acrylonitrile or the double olefin compound shown in alpha-alkyl acrylonitrile, formula (III) structure and sulfur trioxide mole
Than for 1：0.5～1.5：0.01～1；Described acrylonitrile or the volume ratio of alpha-alkyl acrylonitrile and pyridine and glacial acetic acid is 1：
0.1～5：1～10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510683872.7A CN106590597A (en) | 2015-10-20 | 2015-10-20 | High-temperature high-mineralization-degree oil displacement agent composition for oil reservoirs and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510683872.7A CN106590597A (en) | 2015-10-20 | 2015-10-20 | High-temperature high-mineralization-degree oil displacement agent composition for oil reservoirs and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106590597A true CN106590597A (en) | 2017-04-26 |
Family
ID=58555344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510683872.7A Pending CN106590597A (en) | 2015-10-20 | 2015-10-20 | High-temperature high-mineralization-degree oil displacement agent composition for oil reservoirs and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106590597A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109265602A (en) * | 2018-08-28 | 2019-01-25 | 黑龙江吉地油田服务股份有限公司 | A kind of displacement of reservoir oil anti-salt polyacrylamide and preparation method thereof |
| CN109810685A (en) * | 2017-11-20 | 2019-05-28 | 中国石油化工股份有限公司 | Oil displacement agent composition and its preparation method and application |
| CN110079291A (en) * | 2019-05-31 | 2019-08-02 | 西南石油大学 | Emulsify increasing stick system in situ containing high transformation temperature and in the application of water-drive pool |
| CN112266779A (en) * | 2020-10-21 | 2021-01-26 | 西安凯尔文石化助剂制造有限公司 | High-temperature-resistant instant thickening agent for fracturing fluid and preparation method thereof |
| CN115703717A (en) * | 2021-08-09 | 2023-02-17 | 中国石油化工股份有限公司 | Hydrophobic acrylamide compound, hydrophobic association type temperature-resistant salt-resistant polyacrylamide oil displacement agent, and preparation methods and applications thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104109519A (en) * | 2013-04-16 | 2014-10-22 | 中国石油化工股份有限公司 | Betaine-polymer oil displacement composition and preparation method thereof |
| CN104277806A (en) * | 2013-07-09 | 2015-01-14 | 中国石油化工股份有限公司 | Oil displacement composition and preparation method and application thereof |
| CN104926987A (en) * | 2014-03-17 | 2015-09-23 | 中国石油化工股份有限公司 | Hydrophobic associating crosslinked microspheres and preparation method thereof |
-
2015
- 2015-10-20 CN CN201510683872.7A patent/CN106590597A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104109519A (en) * | 2013-04-16 | 2014-10-22 | 中国石油化工股份有限公司 | Betaine-polymer oil displacement composition and preparation method thereof |
| CN104277806A (en) * | 2013-07-09 | 2015-01-14 | 中国石油化工股份有限公司 | Oil displacement composition and preparation method and application thereof |
| CN104926987A (en) * | 2014-03-17 | 2015-09-23 | 中国石油化工股份有限公司 | Hydrophobic associating crosslinked microspheres and preparation method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109810685A (en) * | 2017-11-20 | 2019-05-28 | 中国石油化工股份有限公司 | Oil displacement agent composition and its preparation method and application |
| CN109810685B (en) * | 2017-11-20 | 2021-06-11 | 中国石油化工股份有限公司 | Oil displacement agent composition and preparation method and application thereof |
| CN109265602A (en) * | 2018-08-28 | 2019-01-25 | 黑龙江吉地油田服务股份有限公司 | A kind of displacement of reservoir oil anti-salt polyacrylamide and preparation method thereof |
| CN109265602B (en) * | 2018-08-28 | 2021-03-23 | 黑龙江吉地油田服务股份有限公司 | Salt-resistant polyacrylamide for oil displacement and preparation method thereof |
| CN110079291A (en) * | 2019-05-31 | 2019-08-02 | 西南石油大学 | Emulsify increasing stick system in situ containing high transformation temperature and in the application of water-drive pool |
| CN112266779A (en) * | 2020-10-21 | 2021-01-26 | 西安凯尔文石化助剂制造有限公司 | High-temperature-resistant instant thickening agent for fracturing fluid and preparation method thereof |
| CN115703717A (en) * | 2021-08-09 | 2023-02-17 | 中国石油化工股份有限公司 | Hydrophobic acrylamide compound, hydrophobic association type temperature-resistant salt-resistant polyacrylamide oil displacement agent, and preparation methods and applications thereof |
| CN115703717B (en) * | 2021-08-09 | 2024-02-13 | 中国石油化工股份有限公司 | Hydrophobic acrylamide compound, hydrophobic association type temperature-resistant salt-resistant polyacrylamide oil displacement agent, and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106589227A (en) | Polyacrylamide oil displacement agent of oil reservoir with high temperature and high hypersalinity as well as preparation method thereof | |
| CN110483687B (en) | Fracturing fluid thickening agent and preparation method thereof | |
| CN104231162B (en) | Polyacrylamide reverse microemulsion and preparation method thereof | |
| CN104277175B (en) | Polyacrylamide reverse microemulsion transfer drive system | |
| CN104448126B (en) | Harsh oil deposit reversed-phase microemulsion profile-control flooding system and preparation method thereof | |
| CN106590597A (en) | High-temperature high-mineralization-degree oil displacement agent composition for oil reservoirs and preparation method thereof | |
| CN104559992B (en) | The transfer drive composition of high temperature and high salt oil deposit | |
| CN104277174B (en) | Polyacrylamide nanometer microballoon system and preparation method thereof | |
| CN104650301B (en) | A kind of acrylamide copolymer and its preparation method and application | |
| CN103666433B (en) | Oil-displacing agent composition used for improving recovery ratio of high-temperature reservoir and preparation method of composition | |
| CN107337762A (en) | A kind of hydrophobic association cross-linked polymer microsphere, preparation method and application | |
| CN104558402A (en) | Polymer microemulsion for deep profile control of oil reservoir | |
| CN106866881A (en) | Hydrophobic association acrylamide copolymer emulsion and preparation method thereof | |
| CN104558403B (en) | Crosslinking gradual change swellable polymer microballoon and preparation method thereof | |
| CN105566565B (en) | A kind of side chain contains the hydrophobic associated polymer of double bond, preparation method and the usage | |
| CN106867496A (en) | Online injection type oil displacement agent containing hydrophobic associated polymer emulsion and preparation method thereof | |
| CN111499793B (en) | Nano composite polymer and temperature-resistant and salt-resistant profile control agent containing same | |
| CN106590591A (en) | Oil displacement agent composition used for oil recovery, and preparation method thereof | |
| CN104628944B (en) | Acrylamide copolymer, as well as preparation method and application thereof | |
| CN103450868A (en) | Heat-resistant salt-tolerant water-soluble amphiphilic polymer composite thick oil viscosity reducer | |
| CN104926987B (en) | Hydrophobic associating crosslinked microspheres and preparation method thereof | |
| CN106467599A (en) | A kind of self-association type linked polymer coil and preparation method thereof | |
| CN106589232A (en) | Hydrophobic association acrylamide copolymer and preparing method | |
| CN104628940B (en) | A kind of acrylamide copolymer and its preparation method and application | |
| CN115572347A (en) | High-temperature-resistant high-salt-resistant tackifying and shearing-improving agent for water-based drilling fluid and preparation 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: 20170426 |