CN106701053A - High-polymer crude oil activator, and preparation method and application thereof - Google Patents
High-polymer crude oil activator, and preparation method and application thereof Download PDFInfo
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- CN106701053A CN106701053A CN201611191811.XA CN201611191811A CN106701053A CN 106701053 A CN106701053 A CN 106701053A CN 201611191811 A CN201611191811 A CN 201611191811A CN 106701053 A CN106701053 A CN 106701053A
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
Abstract
The invention provides a high-polymer crude oil activator, and a preparation method and application thereof. The preparation method comprises the following step: carrying out copolymerization reaction on acrylamide, acrylic acid or alkali metal salts thereof, 2-acrylamido-2-methylpropanesulfonic acid or alkali metal salts thereof, amphoteric functional monomers disclosed as Formula I, and amphiphilic functional monomers disclosed as Formula II. The high-polymer crude oil activator provided by the invention can effectively lower the viscosity of viscous oil in crude oil exploitation and increase the fluidity of the crude oil produced liquid.
Description
Technical field
The invention belongs to technical field of petrochemical industry, and in particular to a kind of macromolecule crude oil activating agent and preparation method thereof with
Using.
Background technology
Thickened oil recovery is worldwide common difficulty.Because viscosity of thickened oil is big, gum asphaltic content is high, on ground
Flowing is difficult in layer, pit shaft and petroleum pipeline, while oil and water mobility ratio greatly, is easily caused, water-free oil production period is short, oil well water breakthrough is fast,
The problems such as Produced Liquid moisture content is high and stratum easily shakes out.
Thickened oil recovery method can be divided mainly into injection fluid exploitation, such as hot water flooding, steam soak, steam drive etc., and
Yield increasing type mining type, such as horizontal well, compound branch well, electrical heating etc..Chemical viscosity reduction agent can effectively disperse for viscous crude, breast
The effect such as change, significantly reduces viscosity of thickened oil, reduces viscous crude flow resistance in stratum and pit shaft, advantageously reduces recovery process energy
Consumption, reduction exhaust emission, raising heavy oil production speed and recovery ratio, thus as the important content of viscous crude enhanced recovery, application
Prospect is very wide.
The content of the invention
It is an object of the invention to provide a kind of macromolecule crude oil activating agent and preparation method thereof.
Macromolecule crude oil activating agent provided by the present invention is prepared by the method comprising the following steps：
So that acrylamide, acrylic acid or its alkali metal salt, 2- acrylamide-2-methylpro panesulfonic acids or its alkali metal
The amphipathic function monomer shown in both sexes function monomer and Formula II shown in salt, Formulas I is copolymerized, and obtains the high score
Sub- crude oil activating agent；
In Formulas I, R1It is H or CH3, G1It is Cl-Or Br-, G2It is H+、Na+、K+Or NH4 +, m is the integer of 3-12, preferably 3-8；
In Formula II, R2It is H or CH3, R3And R4It is the alkyl of carbon chain lengths 1-16, preferably carbon chain lengths are the alkyl of 4-12；
G3And G4It is H+、Na+、K+And NH4 +。
In the comonomer of above-mentioned macromolecule crude oil activating agent, acrylamide account for the percentage of monomer gross mass for 10~
90%, preferably 20~80%, concretely 56.5%, 57%, 65% or 72%；It is total that acrylic acid or its alkali metal salt account for monomer
The percentage of quality is 5~50%, preferably 10~35%, concretely 10%, 11%, 12% or 15%；2- acrylamides
The percentage that base -2- methyl propane sulfonic acids or its alkali metal salt account for monomer gross mass is 5~40%, preferably 5~25%, specifically may be used
It is 8%, 15%, 22% or 25%；The percentage that both sexes function monomer shown in Formulas I accounts for monomer gross mass is 0.1~15%, excellent
Elect 1~10% as, concretely 4.5%, 6.5% or 8.5%；Amphipathic function monomer shown in Formula II accounts for monomer gross mass
Percentage is 0.1~8%, preferably 0.5~3%, concretely 0.5%, 1.5%, 2.5% or 3.0%.
In the above method, the copolyreaction can be carried out in water.
The copolyreaction can be carried out under inert gas shielding.
The inert gas concretely nitrogen.
Auxiliary agent, the auxiliary agent can be also added to be selected from lauryl sodium sulfate, 12 in the reaction system of the copolyreaction
Sodium alkyl sulfonate, cetyl trimethylammonium bromide, alkylpolyoxyethylene sodium sulphate, alkylpolyoxyethylene phosphorus
One or more in sour sodium, the percentage that the quality of the auxiliary agent accounts for comonomer gross mass is 0.5~15%, preferably 2
~8%, concretely 2.0%, 3.5%, 4.5% or 8.0%.
Initiator is additionally added in the reaction system of the copolyreaction.
The pH value of the reaction system of the copolyreaction is 7.5~9.0.
The reaction temperature of the copolyreaction is 5~15 DEG C, and concretely 8 DEG C, 10 DEG C, the reaction time is 2~8h.
The copolyreaction concretely aqueous free radical micellar co-polymerization.
The above method also includes cutting the copolyreaction product for obtaining, dries, crushes, and obtains crude oil activating agent most
The operation of end-product.
The viscosity average molecular weigh of macromolecule crude oil activating agent provided by the present invention is 120 × 104G/mol~2100 × 104g/
Between mol, concretely 460 × 104g/mol、720×104g/mol、1030×104G/mol or 1600 × 104g/mol。
Application of the above-mentioned macromolecule crude oil activating agent in oil extraction falls within protection scope of the present invention.
Experiment shows, macromolecule crude oil activating provided by the present invention agent can effectively reduce the viscous of viscous crude in oil extraction
Degree, strengthens crude oil Produced Liquid flowable.
Specific embodiment
Below by specific embodiment, the present invention will be described, but the invention is not limited in this.
Experimental technique used in following embodiments is conventional method unless otherwise specified；Institute in following embodiments
Reagent, material etc., unless otherwise specified, commercially obtain.
The viscosity average molecular weight determination method of macromolecule crude oil activating agent is shown in following embodiments《GB/T12005.10-1992
Molecular Weight for Polyacrylamide determines viscosimetry》.
Embodiment 1
Synthesize macromolecule crude oil activating agent 1 by following methods：
The synthesis various comonomers that are used of macromolecule crude oil activating agent account for the percentage of comonomer gross mass for：Third
Acrylamide 72%, PAA 15%, 2- acrylamide-2-methylpro panesulfonic acids 8%, two sexual function lists shown in formula (III)
Body 4.5%, the amphipathic function monomer 0.5% shown in formula (IV).Auxiliary agent is lauryl sodium sulfate, and auxiliary agent quality accounts for copolymerization list
The percentage of body gross mass is 2.0%.
Wherein, the function monomer building-up process shown in formula (III) is as follows：By dimethylaminoethyl acrylate and the chloro- 1- of 3-
Propyl alcohol is according to mol ratio 1:1 is soluble in water, and addition accounts for polymerization inhibitor phenthazine of the reactant quality than 0.5%, under reflux conditions
Reaction 6h.Reaction terminates to add toluene and chloroform to be extracted in rear system, and intermediate product A is obtained after water is mutually freeze-dried.
A, formamide and polymerization inhibitor phenthazine are added in reaction vessel, under agitation, chlorosulfonic acid is added dropwise and is kept reactant simultaneously
It is that temperature is less than 5 DEG C, is then warming up to 50 DEG C and continues to react 8h.Reaction adds NaOH regulation pH after terminating be 7.5, then
Add water and absolute ether, sediment is separated, dry after obtain final product.
Function monomer building-up process shown in formula (IV) is as follows：Epoxychloropropane is mixed with the aqueous solution stirring of dimethylamine
Uniformly, 24h is reacted at 75 DEG C, then add NaOH stirring reaction 3h.Vacuum distillation is carried out to supernatant liquid, 60 DEG C are collected
Cut, obtains intermediate product B.By B and 1- bromooctanes according to mol ratio 1:1 is dissolved in acetone, and 12h is reacted under counterflow condition, and
Absolute ether is added in reaction system afterwards, the precipitation of generation is centrifuged and is obtained after drying intermediate product C.In 0 DEG C of bar
Under part, acryloyl chloride is added dropwise in the dichloromethane solution of C, is then warming up to 40 DEG C and continues to react 48h.Reaction terminates backward
Acetone is added in system, produced precipitation obtains final product after drying.
The agent of macromolecule crude oil activating is prepared by aqueous free radical micellar co-polymerization method.Will be various common according to rate of charge
Polycondensation monomer, auxiliary agent and water are added in reactor, and stirring is allowed to be completely dissolved, and temperature of reaction system then is down into 10 DEG C, regulation
Reaction system pH is 7.5, while being passed through nitrogen with the oxygen in fully removal system.Initiator (over cure is added under nitrogen protection
Sour ammonium and sodium hydrogensulfite), continue to obtain gel intermediate product after reacting 5h.By intermediate product cutting, dry, crushing, obtain
To crude oil activating agent product 1.
The macromolecule crude oil activating agent viscosity average molecular weigh is 1600 × 104g/mol。
Embodiment 2
Synthesize macromolecule crude oil activating agent 2 by following methods：
The synthesis various comonomers that are used of macromolecule crude oil activating agent account for the percentage of comonomer gross mass for：Third
Acrylamide 65%, PAA 12%, 2- acrylamide-2-methylpro panesulfonic acids sodium 15%, two sexual function lists shown in formula (V)
Body 6.5%, the amphipathic function monomer 1.5% shown in formula (VI).Auxiliary agent is cetyl trimethylammonium bromide, and auxiliary agent quality is accounted for
The percentage of comonomer gross mass is 4.5%.
Wherein, the function monomer building-up process shown in formula (V) is as follows：By dimethylaminoethyl acrylate and the chloro- 1- of 6- oneself
Alcohol is according to mol ratio 1:1 is soluble in water, and addition accounts for polymerization inhibitor phenthazine of the reactant quality than 0.5%, under reflux conditions instead
Answer 6h.Reaction terminates to add toluene and chloroform to be extracted in rear system, and intermediate product D is obtained after water is mutually freeze-dried.Will
D, formamide and polymerization inhibitor phenthazine are added in reaction vessel, under agitation, chlorosulfonic acid is added dropwise and keeps reaction system simultaneously
Temperature is less than 5 DEG C, is then warming up to 50 DEG C and continues to react 8h.Reaction adds ammoniacal liquor regulation pH after terminating be 7.5, then adds water
With absolute ether, sediment is separated, dry after obtain final product.
Function monomer building-up process shown in formula (VI) is as follows：Epoxychloropropane is mixed with the aqueous solution stirring of dimethylamine
Uniformly, 24h is reacted at 75 DEG C, then add NaOH stirring reaction 3h.Vacuum distillation is carried out to supernatant liquid, 60 DEG C are collected
Cut, obtains intermediate product E.By E and 1- bromo-dodecanes according to mol ratio 1:1 is dissolved in acetone, and 12h is reacted under counterflow condition,
Absolute ether is then added in reaction system, the precipitation of generation is centrifuged and is obtained after drying intermediate product F.At 0 DEG C
Under the conditions of, acryloyl chloride is added dropwise in the dichloromethane solution of F, then it is warming up to 40 DEG C and continues to react 48h.After reaction terminates
To acetone is added in system, produced precipitation obtains final product after drying.
The agent of macromolecule crude oil activating is prepared by aqueous free radical micellar co-polymerization method.Will be various common according to rate of charge
Polycondensation monomer, auxiliary agent and water are added in reactor, and stirring is allowed to be completely dissolved, and temperature of reaction system then is down into 6 DEG C, and regulation is anti-
It is 8.0 to answer system pH, while being passed through nitrogen with the oxygen in fully removal system.Initiator (persulfuric acid is added under nitrogen protection
Ammonium and sodium thiosulfate), continue to obtain gel intermediate product after reacting 5h.By intermediate product cutting, dry, crushing, obtain
Crude oil activating agent product 2.
The macromolecule crude oil activating agent viscosity average molecular weigh is 1030 × 104g/mol。
Embodiment 3
Synthesize macromolecule crude oil activating agent 3 by following methods：
The synthesis various comonomers that are used of macromolecule crude oil activating agent account for the percentage of comonomer gross mass for：Third
Acrylamide 56.5%, acrylic acid 10%, 2- acrylamide-2-methylpro panesulfonic acids sodium 22%, two sexual functions shown in formula (VII)
Monomer 8.5%, the amphipathic function monomer 3.0% shown in formula (VIII).Auxiliary agent is that lauryl sodium sulfate is gathered with dodecyl
Oxygen ethene ether sodium sulfate, the percentage that auxiliary agent gross mass accounts for comonomer gross mass is 3.5%, lauryl sodium sulfate and 12
The mass ratio of pareth sulfate is 1:2.
Wherein, the function monomer building-up process shown in formula (VII) is as follows：By dimethylaminoethyl acrylate and the chloro- 1- of 3-
Propyl alcohol is according to mol ratio 1:1 is soluble in water, and addition accounts for polymerization inhibitor phenthazine of the reactant quality than 0.5%, under reflux conditions
Reaction 6h.Reaction terminates to add toluene and chloroform to be extracted in rear system, and intermediate product J is obtained after water is mutually freeze-dried.
J, formamide and polymerization inhibitor phenthazine are added in reaction vessel, under agitation, chlorosulfonic acid is added dropwise and is kept reactant simultaneously
It is that temperature is less than 5 DEG C, is then warming up to 50 DEG C and continues to react 8h.Reaction adds ammoniacal liquor regulation pH after terminating be 7.5, is then added
Water and absolute ether, sediment is separated, dry after obtain final product.
Function monomer building-up process shown in formula (VIII) is as follows：The aqueous solution stirring of epoxychloropropane and dimethylamine is mixed
Close uniform, 24h is reacted at 75 DEG C, then add NaOH stirring reaction 3h.Vacuum distillation is carried out to supernatant liquid, 60 are collected
DEG C cut, obtains intermediate product K.By K and 1- NBBs according to mol ratio 1:1 is dissolved in acetone, and 12h is reacted under counterflow condition,
Absolute ether is then added in reaction system, the precipitation of generation is centrifuged and is obtained after drying intermediate product L.At 0 DEG C
Under the conditions of, acryloyl chloride is added dropwise in the dichloromethane solution of L, then it is warming up to 40 DEG C and continues to react 48h.After reaction terminates
To acetone is added in system, produced precipitation obtains final product after drying.
The agent of macromolecule crude oil activating is prepared by aqueous free radical micellar co-polymerization method.Will be various common according to rate of charge
Polycondensation monomer, auxiliary agent and water are added in reactor, and stirring is allowed to be completely dissolved, and temperature of reaction system then is down into 8 DEG C, and regulation is anti-
It is 8.0 to answer system pH, while being passed through nitrogen with the oxygen in fully removal system.Initiator (persulfuric acid is added under nitrogen protection
Sodium and sodium hydrogensulfite), continue to obtain gel intermediate product after reacting 5h.By intermediate product cutting, dry, crushing, obtain
Crude oil activating agent product 3.
The macromolecule crude oil activating agent viscosity average molecular weigh is 720 × 104g/mol。
Embodiment 4
The synthetic method of the macromolecule crude oil activating agent of the present embodiment is as follows：
The synthesis various comonomers that are used of macromolecule crude oil activating agent account for the percentage of comonomer gross mass for：Third
Acrylamide 57%, PAA 11%, 2- acrylamide-2-methylpro panesulfonic acids sodium 25%, two sexual functions shown in formula (IX)
Monomer 4.5%, the amphipathic function monomer 2.5% shown in formula (X).Auxiliary agent is lauryl sodium sulfate and dodecyl polyoxy second
Alkene ether phosphoric acid sodium, it is 8.0% that auxiliary agent gross mass accounts for the percentage of comonomer gross mass, lauryl sodium sulfate and dodecyl
The mass ratio of APEO sodium phosphate is 1:3.
Formula (IX) and the building-up process of function monomer is shown in embodiment 1 shown in formula (X).
The agent of macromolecule crude oil activating is prepared by aqueous free radical micellar co-polymerization method.Will be various common according to rate of charge
Polycondensation monomer, auxiliary agent and water are added in reactor, and stirring is allowed to be completely dissolved, and temperature of reaction system then is down into 6 DEG C, and regulation is anti-
It is 8.5 to answer system pH, while being passed through nitrogen with the oxygen in fully removal system.Initiator (persulfuric acid is added under nitrogen protection
Potassium and sodium thiosulfate), continue to obtain gel intermediate product after reacting 5h.By intermediate product cutting, dry, crushing, obtain
Crude oil activating agent product 4.
The macromolecule viscous crude activator viscosity average molecular weigh is 460 × 104g/mol。
Embodiment 5
The reducing thick oil viscosity rate continuous mode of the macromolecule crude oil activating agent of embodiment 1-4 synthesis is as follows.
Bohai Sea A oil fields dewatered oil is chosen as viscosity of crude 3200mPa.s at 1,50 DEG C of oil sample；Choose Bohai Sea B oil fields
Dewatered oil is used as viscosity of crude 1200mPa.s at 2,50 DEG C of oil sample.The salinity of crude oil activating agent solution preparation water is
10000mg/L, wherein calcic magnesium ion 500mg/L.
(1) by viscous crude to be measured in target detection temperature 50 C water bath with thermostatic control constant temperature 1h, weigh 200g (being accurate to 0.1g)
Viscous crude oil sample adds the viscous crude activator solution of the aimed concn of 200g (being accurate to 0.1g) preparations in beaker, is put into 50 DEG C
Water bath with thermostatic control in, agitating paddle is placed in beaker center by constant temperature 1h, and at bottom (2~3) mm, and regulation rotating speed is 500r/
3min is stirred under min, constant temperature.
(2) the rapid viscous crude emulsion prepared with rotary viscosity design determining.At 50 DEG C, 0~No. 4 rotor of selection of NDJ types,
Brookfield types choose 61~No. 64 rotors, contain sample cylinder diameter and are not less than 60mm, test rotating speed 60r/min.
(3) every 2s, single reading is recorded, is recorded 50 times.Choose average value.
(4) reducing thick oil viscosity rate presses formula (a) calculating.
In formula：
F-reducing thick oil viscosity rate, %；
μ0The viscosity of viscous crude oil sample, mPa.s under-test temperature；
The viscosity of μ-addition sample solution rear thick fat liquor, mPa.s.
Each sample does two Duplicate Samples, takes arithmetic mean of instantaneous value for measurement result.Each measured value and arithmetic mean of instantaneous value it
Difference is not more than 1.0%.
The reducing thick oil viscosity rate measurement result of the macromolecule crude oil activating agent of embodiment 1-4 synthesis is shown in Table 1.
The macromolecule crude oil activating agent reducing thick oil viscosity rate measurement result of the embodiment 1-4 of table 1 synthesis
Claims (9)
1. a kind of method for preparing macromolecule crude oil activating agent, comprises the steps：So that acrylamide, acrylic acid or its alkali gold
Shown in category salt, 2- acrylamide-2-methylpro panesulfonic acids or both sexes function monomer and Formula II shown in its alkali metal salt, Formulas I
Amphipathic function monomer be copolymerized, obtain final product：
In Formulas I, R1It is H or CH3, G1It is Cl-Or Br-, G2It is H+、Na+、K+Or NH4 +, m is the integer of 3-12；
In Formula II, R2It is H or CH3, R3And R4It is the alkyl of carbon chain lengths 1-16；G3And G4It is H+、Na+、K+Or NH4 +。
2. method according to claim 1, it is characterised in that：In methods described, in the copolymerization of macromolecule crude oil activating agent
In monomer, the percentage that acrylamide accounts for monomer gross mass is 10~90%；Acrylic acid or its alkali metal salt account for monomer gross mass
Percentage be 5~50%；The percentage that 2- acrylamide-2-methylpro panesulfonic acids or its alkali metal salt account for monomer gross mass is
5~40%；The percentage that both sexes function monomer shown in Formulas I accounts for monomer gross mass is 0.1~15%；It is amphipathic shown in Formula II
The percentage that function monomer accounts for monomer gross mass is 0.1~8%.
3. method according to claim 1 and 2, it is characterised in that：
The copolyreaction is carried out in water；
The copolyreaction is carried out under inert gas shielding.
4. the method according to any one of claim 1-3, it is characterised in that：
Auxiliary agent is additionally added in the reaction system of the copolyreaction, the auxiliary agent is selected from lauryl sodium sulfate, dodecyl sulphur
In sour sodium, cetyl trimethylammonium bromide, alkylpolyoxyethylene sodium sulphate, alkylpolyoxyethylene sodium phosphate
One or more, the percentage that the quality of the auxiliary agent accounts for comonomer gross mass is 0.5~15%.
5. the method according to any one of claim 1-4, it is characterised in that：The pH of the reaction system of the copolyreaction
Be worth is 7.5~9.0；
The reaction temperature of the copolyreaction is 5~15 DEG C, and the reaction time is 2~8h.
6. the method according to any one of claim 1-5, it is characterised in that：The copolyreaction is aqueous free radical
Micellar co-polymerization.
7. the method according to any one of claim 1-6, it is characterised in that：Methods described also includes the copolymerization to obtaining
Product is cut, is dried, is crushed, and obtains the operation of crude oil activating agent final product.
8. the macromolecule crude oil activating agent that method any one of claim 1-7 is prepared.
9. application of the macromolecule crude oil activating agent described in claim 8 in oil extraction.
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| CN113667058A (en) * | 2021-09-14 | 2021-11-19 | 北京百特泰科能源工程技术有限公司 | Thickened oil activator, preparation method and application |
| CN115716791A (en) * | 2021-08-24 | 2023-02-28 | 中国石油化工股份有限公司 | Anionic sulfonate surfactant and preparation method and application thereof |
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