CN105131929A - Graft-coated viscosity reducer and viscosity reduction method thereof - Google Patents
Graft-coated viscosity reducer and viscosity reduction method thereof Download PDFInfo
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- CN105131929A CN105131929A CN201510560958.0A CN201510560958A CN105131929A CN 105131929 A CN105131929 A CN 105131929A CN 201510560958 A CN201510560958 A CN 201510560958A CN 105131929 A CN105131929 A CN 105131929A
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- 238000000034 method Methods 0.000 title abstract description 16
- 239000003638 chemical reducing agent Substances 0.000 title abstract 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 134
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 24
- -1 alkylbenzene sulfonate Chemical class 0.000 claims abstract description 24
- 239000000203 mixture Substances 0.000 claims abstract description 23
- 239000007787 solid Substances 0.000 claims abstract description 20
- 239000005038 ethylene vinyl acetate Substances 0.000 claims abstract description 11
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims abstract description 11
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 10
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 10
- 239000011734 sodium Substances 0.000 claims abstract description 10
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 8
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims abstract description 6
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 16
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 14
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 9
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 8
- 150000004996 alkyl benzenes Chemical class 0.000 claims description 8
- 229940077388 benzenesulfonate Drugs 0.000 claims description 8
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 8
- 235000011152 sodium sulphate Nutrition 0.000 claims description 8
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 7
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 claims description 6
- 150000002148 esters Chemical class 0.000 claims description 6
- 229920002125 Sokalan® Polymers 0.000 claims description 5
- 239000004584 polyacrylic acid Substances 0.000 claims description 5
- 238000011946 reduction process Methods 0.000 claims description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 238000006116 polymerization reaction Methods 0.000 claims description 2
- 230000001603 reducing effect Effects 0.000 abstract description 13
- 239000011248 coating agent Substances 0.000 abstract 4
- 238000000576 coating method Methods 0.000 abstract 4
- SCYULBFZEHDVBN-UHFFFAOYSA-N 1,1-Dichloroethane Chemical compound CC(Cl)Cl SCYULBFZEHDVBN-UHFFFAOYSA-N 0.000 abstract 1
- 239000002202 Polyethylene glycol Substances 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract 1
- 150000002191 fatty alcohols Chemical class 0.000 abstract 1
- 229920000058 polyacrylate Polymers 0.000 abstract 1
- 229920001223 polyethylene glycol Polymers 0.000 abstract 1
- 229940051841 polyoxyethylene ether Drugs 0.000 abstract 1
- 229920000056 polyoxyethylene ether Polymers 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 23
- 239000010779 crude oil Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 239000000839 emulsion Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 239000006101 laboratory sample Substances 0.000 description 2
- 241000628997 Flos Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
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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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/16—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity
- F17D1/17—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity by mixing with another liquid, i.e. diluting
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Health & Medical Sciences (AREA)
- Detergent Compositions (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The invention provides a graft-coated viscosity reducer and a viscosity reduction method thereof. The grafting and coating viscosity reducer comprises a grafting agent and a coating viscosity reducer; the grafting agent comprises the following components in percentage by mass based on 100 percent of the total mass of the grafting agent: 2 to 3 percent of ethylene-vinyl acetate copolymer solution, 2 to 5 percent of dichloroethane, 1 to 2 percent of polyacrylate and the balance of light oil; the coated viscosity reducer comprises the following components by taking the total mass of the coated viscosity reducer as 100 percent: 20 to 25 percent of sodium heavy alkylbenzene sulfonate solution, 45 to 55 percent of sodium fatty alcohol ether sulfate, 5 to 10 percent of alkylphenol polyoxyethylene ether solution, 5 to 8 percent of polyethylene glycol, 0.5 to 0.8 percent of sodium dodecyl benzene sulfonate, 1 to 1.5 percent of sodium hydroxide solution and the balance of water. When the grafting and coating viscosity reducer is used for reducing viscosity, the grafting agent and the coating viscosity reducer are respectively prepared into solids; dissolving the grafting agent solid in the thick oil to obtain a thick oil mixture; dissolving the coated viscosity reducer solid in water to obtain a coated viscosity reducer solution; and dissolving the wrapped viscosity reducer solution into the thick oil mixture to finish viscosity reduction treatment on the thick oil.
Description
Technical field
The present invention relates to a kind of viscosity-depression agent, particularly a kind of grafting parcel viscosity-depression agent and viscosity reducing process thereof, belong to oil production and environment-friendly materials technical field.
Background technology
Conventional viscosity reduction method has the methods such as thin oil blending visbreaking, heating, viscosity reducing, physical field viscosity reduction and chemical viscosity reduction.Viscosity reduction technology in the production of viscous crude traditional at present (heating, viscosity reducing, mix rare viscosity reduction) has been tending towards ripe, but for super-viscous oil or super―heavy oil, traditional viscosity reduction technique means seems more single, and it is high to there is energy consumption, the shortcomings such as poor stability, how reducing the production cost of viscous crude, improve the security in viscous oil recovery and transportation, economy, is urgent problem from now on.
Reducing thick oil viscosity way choice is on the exploitation of viscous crude and collect defeated and have very important impact, therefore want to determine an economy, efficient, safe viscosity reduction technique, just should make overall plans, take a panoramic view of the situation, whole exploitation and the defeated process of collection are linked together, takes into full account the economy of each process procedure, security, according to the feature of the physical property of viscous crude and the gathering and transferring process at scene, determine a rational viscosity reduction technique, thus greatly improve the economic benefit developing viscous crude resource.
Simple and convenient and the Be very effective of chemical viscosity reduction technology, becomes the effective technology means of reducing thick oil viscosity.But current viscosity-depression agent exists many shortcomings: viscosity-depression agent is with strong points, viscosity reduction efficiency is low, viscosity-depression agent is greatly alkaline, produce unnecessary scale problems and etching problem, be incompatible with joint station emulsion splitter, backward dehydro difficulty etc.
For above-mentioned technical problem, provide efficiently a kind of, widely used reducing thick oil viscosity technology is this area problem demanding prompt solution.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of grafting parcel viscosity-depression agent, the applied range of this grafting parcel viscosity-depression agent, viscosity reduction efficiency is high.
In order to achieve the above object, the invention provides a kind of grafting parcel viscosity-depression agent, this grafting parcel viscosity-depression agent comprises grafting agent and parcel viscosity-depression agent;
Wherein, in the total mass of described grafting agent for 100%, described grafting agent comprises: the lightweight oil of the ethylene vinyl acetate solution of 2%-3%, the ethylene dichloride of 2%-5%, the polyacrylic ester of 1%-2% and surplus;
To wrap up the total mass of viscosity-depression agent for 100%, described parcel viscosity-depression agent comprises: the water of the alkylphenol polyoxyethylene solution of the sodium heavy alkyl benzene sulfonate solution of 20%-25%, the fatty alcohol-ether sodium sulfate of 45%-55%, 5%-10%, the polyoxyethylene glycol of 5%-8%, the Sodium dodecylbenzene sulfonate of 0.5%-0.8%, the sodium hydroxide solution of 1%-1.5% and surplus.
Grafting agent in above-mentioned grafting parcel viscosity-depression agent provided by the invention and parcel viscosity-depression agent are independently packed, and proportionally use time to be used.
In grafting parcel viscosity-depression agent provided by the invention, preferably, the mass concentration of the ethylene vinyl acetate solution of employing is 30%-37%; The molecular weight of the ethylene vinyl acetate adopted is 15000-17000.
In grafting parcel viscosity-depression agent provided by the invention, preferably, the polyacrylic ester of employing comprises polyacrylic acid hexadecanol ester.The polyacrylic acid hexadecanol ester adopted is produced by Anhui water bodyguard Environmental Protection Technology Co., Ltd.
In grafting parcel viscosity-depression agent provided by the invention, preferably, the carbonatoms of the lightweight oil of employing is 9-11.
In grafting parcel viscosity-depression agent provided by the invention, preferably, the mass concentration of the sodium heavy alkyl benzene sulfonate solution of employing is 20%-30%.The sodium heavy alkyl benzene sulfonate adopted is by the large Chemical Manufacture in Jinan hundred.
In grafting parcel viscosity-depression agent provided by the invention, preferably, the mass concentration of the fatty alcohol-ether sodium sulfate of employing is 10%-20%.The fatty alcohol-ether sodium sulfate adopted is produced by Yong Jiexihua raw material company limited of Shenyang City.
In grafting parcel viscosity-depression agent provided by the invention, preferably, the mass concentration of the alkylphenol polyoxyethylene solution of employing is 10%-20%; The polymerization degree≤10 of the alkylphenol polyoxyethylene adopted.
In grafting parcel viscosity-depression agent provided by the invention, preferably, the polyoxyethylene glycol of employing comprises poly(oxyethylene glycol) 400; The mass concentration of sodium hydroxide solution is 20%.
In grafting parcel viscosity-depression agent provided by the invention, preferably, the grafting agent of employing is prepared by following steps:
After described ethylene vinyl acetate solution, ethylene dichloride, polyacrylic ester and lightweight oil are mixed, in the water-bath of 50 DEG C-70 DEG C, stir 30min-60min, obtain described grafting agent.
In grafting parcel viscosity-depression agent provided by the invention, sodium heavy alkyl benzene sulfonate solution, fatty alcohol-ether sodium sulfate, alkylphenol polyoxyethylene solution, polyoxyethylene glycol, Sodium dodecylbenzene sulfonate, sodium hydroxide solution and water are fully uniformly mixed and obtain by the parcel viscosity-depression agent of employing.
In grafting parcel viscosity-depression agent provided by the invention, preferably, the pH of described parcel viscosity-depression agent is 6-8.
Grafting parcel viscosity-depression agent provided by the invention, when specifically using, is grafting agent and parcel viscosity-depression agent are made solid respectively re-use.
When adopting above-mentioned grafting parcel viscosity-depression agent to carry out viscosity reduction process to viscous crude, specifically comprise the following steps:
Grafting agent and parcel viscosity-depression agent are made solid respectively, obtains grafting agent solid and parcel viscosity-depression agent solid;
Be dissolved in viscous crude by grafting agent solid, fully stir, obtain viscous oil mixture, the add-on of grafting agent solid is 1500mg/L-2000mg/L;
To wrap up viscosity-depression agent solid soluble in water, and obtain parcel viscosity-depression agent solution, the add-on of parcel viscosity-depression agent solid is 1000mg/L-1500mg/L, and wherein, the mass ratio of viscous crude and water is 1:3-3:1;
Parcel viscosity-depression agent solution is dissolved in described viscous oil mixture, completes and adopt grafting provided by the invention parcel viscosity-depression agent to the viscosity reduction process of viscous crude.
When the viscosity reducing effect of grafting parcel viscosity-depression agent provided by the invention is evaluated, carry out according to " oil-in-water-type heavy crude thinner technical specifications " Q/SY118-2013, specifically comprise the following steps:
By heating crude oil to 70 DEG C-80 DEG C, macromolecular components wherein is fully separated out, adds grafting agent, stir, grafting agent is fully mixed with crude oil, obtains blends of crudes;
To viscosity-depression agent be wrapped up soluble in water, obtain parcel viscosity-depression agent solution;
Parcel viscosity-depression agent solution is dissolved in blends of crudes, abundant mix and blend, reaches the object of grafting parcel viscosity reduction, in a conventional manner the viscosity reducing effect of grafting parcel viscosity-depression agent of the present invention is evaluated.
Grafting parcel viscosity-depression agent provided by the invention is compared with existing viscosity-depression agent, and tool has the following advantages:
The applied range of grafting parcel viscosity-depression agent provided by the invention;
The viscosity reduction efficiency of grafting parcel viscosity-depression agent provided by the invention is high;
Grafting provided by the invention parcel viscosity-depression agent can not produce fouling, also can not etching apparatus, belongs to a kind of viscosity-depression agent of environmental protection;
The compatibility of grafting parcel viscosity-depression agent provided by the invention and water is good, does not affect backward dehydro process.
Embodiment
In order to there be understanding clearly to technical characteristic of the present invention, object and beneficial effect, existing following detailed description is carried out to technical scheme of the present invention, but can not be interpreted as to of the present invention can the restriction of practical range.
Embodiment 1
Present embodiments provide a kind of grafting parcel viscosity-depression agent, it is prepared by following steps:
(effective constituent is 37% to ethylene vinyl acetate by 2%, molecular weight is 17000), the mixing of the C9 lightweight oil (in the total mass of grafting agent for 100%) of the ethylene dichloride of 2%, the polyacrylic acid hexadecanol ester of 1% and surplus puts into flask, under normal pressure 50 DEG C of water-baths, fully stir 30-60min and obtain grafting agent;
Be the sodium heavy alkyl benzene sulfonate of 30% by the solid content of 25%, the mass concentration of 55% is the polyoxyethylenated alcohol sodium sulfate of 20%, the mass concentration of 10% is the alkylphenol polyoxyethylene of 20%, polyoxyethylene glycol (molecular weight is 400), the Sodium dodecylbenzene sulfonate of 0.5%, the mass concentration of 1.5% of 8% is the sodium hydroxide solution of 20% and water (to wrap up the total mass of viscosity-depression agent for 100%) the fully mix and blend of surplus, obtain wrapping up viscosity-depression agent.
The viscosity reducing effect of the present embodiment to above-mentioned grafting parcel viscosity-depression agent has carried out evaluation test, and laboratory sample is Liaohe Oil Field dawn oil recovery factory operation six district A well crude oil and underground water, and concrete steps are as follows:
By Liaohe Oil Field dawn oil recovery factory operation six district A well heating crude oil to 70-80 DEG C, add the above-mentioned grafting agent of the present embodiment, stir, obtain blends of crudes;
Parcel viscosity-depression agent is dissolved in underground water, obtains parcel viscosity-depression agent solution;
Parcel viscosity-depression agent solution is dissolved in blends of crudes, after abundant mix and blend, evaluate according to standard " oil-in-water-type heavy crude thinner technical specifications " Q/SY118-2013, at 50 DEG C, A well crude oil original viscosity is 46910mPas, be 49mPas after adding the grafting parcel viscosity-depression agent of the present embodiment, viscosity break ratio is 99.9%.
Embodiment 2
Present embodiments provide a kind of grafting parcel viscosity-depression agent, it is prepared by following steps:
(effective constituent is 37% to ethylene vinyl acetate by 2%, molecular weight is 17000), the mixing of the C9 lightweight oil (in the total mass of grafting agent for 100%) of the ethylene dichloride of 2%, the polyacrylic acid hexadecanol ester of 1% and surplus puts into flask, under normal pressure 50 DEG C of water-baths, fully stir 30-60min and obtain grafting agent;
Be the sodium heavy alkyl benzene sulfonate of 30% by the solid content of 25%, the mass concentration of 55% is the polyoxyethylenated alcohol sodium sulfate of 20%, the mass concentration of 10% is the alkylphenol polyoxyethylene of 20%, polyoxyethylene glycol (molecular weight is 400), the Sodium dodecylbenzene sulfonate of 0.5%, the mass concentration of 1.5% of 8% is the sodium hydroxide solution of 20% and water (to wrap up the total mass of viscosity-depression agent for 100%) the fully mix and blend of surplus, obtain wrapping up viscosity-depression agent.
The viscosity reducing effect of the present embodiment to above-mentioned grafting parcel viscosity-depression agent has carried out evaluation test, and laboratory sample is Liaohe Oil Field dawn oil recovery factory operation six district B well crude oil and underground water, and concrete steps are as follows:
By Liaohe Oil Field dawn oil recovery factory operation six district A well heating crude oil to 70-80 DEG C, add the above-mentioned grafting agent of the present embodiment, stir, obtain blends of crudes;
Parcel viscosity-depression agent is dissolved in underground water, obtains parcel viscosity-depression agent solution;
Parcel viscosity-depression agent solution is dissolved in blends of crudes, after abundant mix and blend, evaluate according to standard " oil-in-water-type heavy crude thinner technical specifications " Q/SY118-2013, at 50 DEG C, B well crude oil original viscosity is 9950mPas, add the present embodiment grafting parcel viscosity-depression agent after viscosity be 38.5mPas, viscosity break ratio is 99.6%.
Embodiment 3
The grafting of embodiment 1 parcel viscosity-depression agent is carried out the compatibleness evaluation experimental with water by the present embodiment.
Add above-mentioned grafting parcel viscosity-depression agent 1000mg/L at a colorimetric cylinder 1 containing water, another only contains in the colorimetric cylinder 2 of water as reference.According to six district's water treatment processes, add emulsion splitter, in advance de-agent in the colorimetric cylinder 1 containing grafting parcel viscosity-depression agent successively, only add flocculation agent, coagulant aids, breakdown of emulsion temperature 90 DEG C containing in the colorimetric cylinder 2 of water.Measure its impact on water treatment, result is as shown in table 1.
Table 1
As shown in Table 1, to wrap up the dehydrating amount of the colorimetric cylinder of viscosity-depression agent the same with not adding grafting to add grafting parcel viscosity-depression agent, and be 75mL, upper strata Water in oil is all less than 5%, illustrates and does not have an impact to breakdown of emulsion after adding grafting wraps up viscosity-depression agent; Add grafting parcel viscosity-depression agent with do not add grafting wrap up the colorimetric cylinder of viscosity-depression agent to deviate from floss amount consistent, water quality color is identical, illustrates that grafting is wrapped up viscosity-depression agent and do not had an impact to flocculation.Therefore, add the agent of grafting parcel viscosity-depression agent to have an impact to joint station processed.
Above embodiment illustrates, the viscosity reduction efficiency of grafting parcel viscosity-depression agent provided by the invention is high, good with the compatibility of water, does not affect backward dehydro process.
Claims (10)
1. a grafting parcel viscosity-depression agent, this grafting parcel viscosity-depression agent comprises grafting agent and parcel viscosity-depression agent;
Wherein, in the total mass of described grafting agent for 100%, described grafting agent comprises: the lightweight oil of the ethylene vinyl acetate solution of 2%-3%, the ethylene dichloride of 2%-5%, the polyacrylic ester of 1%-2% and surplus;
To wrap up the total mass of viscosity-depression agent for 100%, described parcel viscosity-depression agent comprises: the water of the alkylphenol polyoxyethylene solution of the sodium heavy alkyl benzene sulfonate solution of 20%-25%, the fatty alcohol-ether sodium sulfate of 45%-55%, 5%-10%, the polyoxyethylene glycol of 5%-8%, the Sodium dodecylbenzene sulfonate of 0.5%-0.8%, the sodium hydroxide solution of 1%-1.5% and surplus.
2. grafting parcel viscosity-depression agent according to claim 1, wherein, the mass concentration of described ethylene vinyl acetate solution is 30%-37%; The molecular weight of described ethylene vinyl acetate is 15000-17000.
3. grafting parcel viscosity-depression agent according to claim 1, wherein, described polyacrylic ester comprises polyacrylic acid hexadecanol ester; The carbonatoms of described lightweight oil is 9-11.
4. grafting parcel viscosity-depression agent according to claim 1, wherein, the mass concentration of described sodium heavy alkyl benzene sulfonate solution is 20%-30%.
5. grafting parcel viscosity-depression agent according to claim 1, wherein, the mass concentration of described fatty alcohol-ether sodium sulfate is 10%-20%.
6. grafting parcel viscosity-depression agent according to claim 1, wherein, the mass concentration of described alkylphenol polyoxyethylene solution is 10%-20%; The polymerization degree≤10 of the alkylphenol polyoxyethylene adopted.
7. grafting parcel viscosity-depression agent according to claim 1, wherein, described polyoxyethylene glycol comprises poly(oxyethylene glycol) 400; The mass concentration of described sodium hydroxide solution is 20%.
8. grafting parcel viscosity-depression agent according to claim 1, wherein, described grafting agent is prepared by following steps:
After described ethylene vinyl acetate solution, ethylene dichloride, polyacrylic ester and lightweight oil are mixed, in the water-bath of 50 DEG C-70 DEG C, stir 30min-60min, obtain described grafting agent.
9. grafting parcel viscosity-depression agent according to claim 1, wherein, the pH of described parcel viscosity-depression agent is 6-8.
10., when the grafting parcel viscosity-depression agent described in any one of claim 1-9 carries out viscosity reduction process to viscous crude, specifically comprise the following steps:
Grafting agent and parcel viscosity-depression agent are made solid respectively, obtains grafting agent solid and parcel viscosity-depression agent solid;
Be dissolved in viscous crude by described grafting agent solid, fully stir, obtain viscous oil mixture, the add-on of described grafting agent solid is 1500mg/L-2000mg/L;
By soluble in water for described parcel viscosity-depression agent solid, obtain parcel viscosity-depression agent solution, the add-on of described parcel viscosity-depression agent solid is 1000mg/L-1500mg/L, and wherein, the mass ratio of viscous crude and water is 1:3-3:1;
Parcel viscosity-depression agent solution is dissolved in described viscous oil mixture, completes described grafting parcel viscosity-depression agent to the viscosity reduction process of viscous crude.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110305646A (en) * | 2018-03-27 | 2019-10-08 | 中国石油天然气股份有限公司 | viscosity reducer and preparation method and application thereof |
| CN113528109A (en) * | 2021-06-02 | 2021-10-22 | 中国石油大学(北京) | Viscosity reducer, preparation method and application thereof |
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| CN102618239A (en) * | 2011-12-28 | 2012-08-01 | 中国石油天然气股份有限公司 | Salt-resistant temperature-resistant thick oil emulsifying viscosity reducer |
| CN102732241A (en) * | 2012-05-29 | 2012-10-17 | 中国石油天然气股份有限公司 | Easily degradable alkali-free viscosity reducer for thick oil and preparation method thereof |
| CN103450868A (en) * | 2013-08-12 | 2013-12-18 | 新疆天普石油天然气工程技术有限公司 | Heat-resistant salt-tolerant water-soluble amphiphilic polymer composite thick oil viscosity reducer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110305646A (en) * | 2018-03-27 | 2019-10-08 | 中国石油天然气股份有限公司 | viscosity reducer and preparation method and application thereof |
| CN113528109A (en) * | 2021-06-02 | 2021-10-22 | 中国石油大学(北京) | Viscosity reducer, preparation method and application thereof |
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| CN105131929B (en) | 2018-03-13 |
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