CN105131929A - Grafting coated viscosity reducer and viscosity reduction method - Google Patents
Grafting coated viscosity reducer and viscosity reduction method 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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- 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
- 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
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- 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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Abstract
The invention provides a grafting coated viscosity reducer and a viscosity reduction method. The grafting coated viscosity reducer comprises a grafting agent and a coated viscosity reducer. The grafting agent comprises 2%-3% of an ethylene vinyl acetate copolymer solution, 2%-5% of dichloroethane, and 1%-2% of polyacrylate, the balance being light oil with the total mass of the grafting agent as 100%. The coated viscosity reducer comprises 20%-25% of a sodium heavy alkyl benzene sulfonate solution, 45%-55% of fatty alcohol ether sodium sulfate, 5%-10% of an alkylphenol polyoxyethylene solution, 5%-8% of polyethylene glycol, 0.5%-0.8% of sodium dodecyl benzene sulfonate and 1%-1.5% of a sodium hydroxide solution, the balance being water, with the total mass of the coated viscosity reducer as 100%. When the grafting coated viscosity reducer is used for viscosity reduction, the grafting agent and the coated viscosity reducer are prepared into solids, the grafting agent solid is dissolved in thickened oil, and a thickened oil mixture is obtained; the coated viscosity reducer is dissolved in water, and a coated viscosity reducer solution is obtained; the coated viscosity reducer solution is dissolved in the thickened oil mixture, and viscosity reduction processing of thickened oil is completed.
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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| Application Number | Priority Date | Filing Date | Title |
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| CN201510560958.0A CN105131929B (en) | 2015-09-06 | 2015-09-06 | One kind grafting parcel thinner and its viscosity reducing process |
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| CN201510560958.0A CN105131929B (en) | 2015-09-06 | 2015-09-06 | One kind grafting parcel thinner and its viscosity reducing process |
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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 | Thinner and its preparation method and application |
| CN113528109A (en) * | 2021-06-02 | 2021-10-22 | 中国石油大学(北京) | Viscosity reducer, preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618239A (en) * | 2011-12-28 | 2012-08-01 | 中国石油天然气股份有限公司 | Salt- and temperature-resistant emulsification viscosity reducer for heavy oil |
| 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 |
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- 2015-09-06 CN CN201510560958.0A patent/CN105131929B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618239A (en) * | 2011-12-28 | 2012-08-01 | 中国石油天然气股份有限公司 | Salt- and temperature-resistant emulsification viscosity reducer for heavy oil |
| 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 | Thinner and its preparation method and application |
| 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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