CN106380535A - Oil field scale inhibitor and preparation method thereof - Google Patents
Oil field scale inhibitor and preparation method thereof Download PDFInfo
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- CN106380535A CN106380535A CN201610778440.9A CN201610778440A CN106380535A CN 106380535 A CN106380535 A CN 106380535A CN 201610778440 A CN201610778440 A CN 201610778440A CN 106380535 A CN106380535 A CN 106380535A
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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
- C08F220/04—Acids; Metal salts or ammonium salts thereof
- C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
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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
- C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
- C08F222/04—Anhydrides, e.g. cyclic anhydrides
- C08F222/06—Maleic anhydride
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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
- C08F228/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a bond to sulfur or by a heterocyclic ring containing sulfur
- C08F228/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a bond to sulfur or by a heterocyclic ring containing sulfur by a bond to sulfur
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/24—Preventing accumulation of dirt or other matter in the pipes, e.g. by traps, by strainers
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses an oil field scale inhibitor and a preparation method thereof, which belongs to the technical field of a chemical material. The oil field scale inhibitor comprises the following components by weight percentage: 10-30% of a dimethylmaleic anhydride polymeric monomer, 10-30% of a sodium alkyl sulfonate polymeric monomer, 10-30% of a methacrylic acid polymeric monomer, 5-20% of an emulsifier, 2-10% of an initiator, 10-30% of an organic solvent, 1-5% of a chain transferring agent, 10-25% of deionized water. The scale inhibitor can be copolymerized by three monomers of dimethylmaleic anhydride, sodium alkyl sulfonate and methacrylic acid in an organic solvent, and does not contain a phosphor-containing substance; a synthesis technology of the scale inhibitor has the advantages of simple process and mild reaction condition, and a synthesized copolymer has the advantages of strong scale inhibition capability, high purity, less usage amount and good scale inhibition effect. The invention also discloses a method for preparing the oil field scale inhibitor.
Description
Technical field
The present invention relates to a kind of antisludging agent, specifically refer to a kind of oil field of pipeline scale prevention be applied to oilfield exploitation
Antisludging agent and preparation method thereof, belongs to chemical material field.
Background technology
The scale problems exploitation along with oil field always, and either primary oil recovery, secondary oil recovery or tertiary oil recovery,
Dirty layer meeting Severe blockage surface line, some oil wells are even because fouling can cause the Liquid output of oilfield exploitation to decline.Common
Dirty layer is mainly made up of calcium carbonate, calcium sulfate, barium sulfate etc., for these dirty matter, existing effective antisludging agent on the market.But
It is that China remains high for the demand of oil, this requirement more and more higher to crude oil production efficiency.At present, in order to carry
The recovery ratio in high oil field, employs multiple well stimulations, and wherein ternary composite driving is most widely used.Ternary composite driving refers to
Alkali, surfactant, polymer, abbreviation ASP.However, because ternary composite driving introduces alkali so that oil displacement system is in oily Zang Huan
Border and extraction system serious scale, the presence of dirt not only causes to produce hidden danger, reduces production efficiency, increases production cost, simultaneously
Also constrain the extensive application of ternary composite driving technology.
The fouling feature that domestic a large amount of scholar is directed to ternary composite driving has carried out the development of related antisludging agent, such as：Maleic acid
The synthesis of acid anhydride-acrylic acid antisludging agent, the synthesis of maleic anhydride-acrylamide antisludging agent, 2,3- epoxy propanesulfonates-acrylamide
Preparation of antisludging agent etc. is it is adaptable to the scale problems of ternary composite driving.But above antisludging agent there is also property unstable, effect
Time is short, and scale inhibition effect is not good to wait deficiency.Therefore, synthesize a kind of stable in properties, and the antisludging agent one that the few effect of consumption is good
It is directly those skilled in the art's technical barrier to be solved.
Content of the invention
The technical problem to be solved is to overcome prior art defect, when providing a kind of stable performance, effect
Between long, simple scaling inhibitor of the good synthesis technique of scale inhibition effect and preparation method thereof.
In order to solve above-mentioned technical problem, the scaling inhibitor that the present invention provides, by weight percentage, it is by with the following group
Divide and make：
Dimethyl maleic anhydride polymerized monomer 10-30%；
ALS polymerized monomer 10-30%；
Three kinds of polymerized monomers 10-30% of methacrylic acid；
Emulsifying agent 5-20%；
Initiator 2-10%；
Organic solvent 20-30%；
Chain-transferring agent 1-5%；
Deionized water 10-25%.
Further, described emulsifying agent is dodecyl sodium sulfate.
Further, described initiator is ammonium persulfate.
Further, described organic solvent is one of toluene, paraxylene, ortho-xylene and meta-xylene or several
The mixture planted.
Further, described chain-transferring agent is n- dodecyl mereaptan.
The invention also discloses a kind of preparation method of scaling inhibitor, comprise the following steps that：
1) deionized water and emulsifying agent are added in reactor, keep the condition of 60-100 DEG C of constant temperature, 0.5-2 is little for stirring
When, add initiator and chain-transferring agent afterwards；
2) add initiator and chain-transferring agent, dimethyl maleic anhydride, ALS, three kinds of methacrylic acid are gathered
Close monomer respectively using organic solvent dissolving after, alternate dropwise addition, in above-mentioned reactor, maintains step 1) in reaction temperature constant,
Continue stirring reaction 1-3 hour at the uniform velocity after 1-3 hour completion of dropping and obtain crude product；
3) add and step 2) identical organic solvent dissolving crude product, stand after stirring 0.5-1 hour, be filtered to remove solid
Body material, then vacuum distillation desolvation obtains antisludging agent.
The present invention having the beneficial effects that compared to prior art：By dimethyl maleic anhydride, ALS, first
The antisludging agent of these three monomers of base acrylic acid copolymerization in organic solvent, it does not contain phosphorus substance；This antisludging agent synthesizes work
Skill is simple, and reaction condition is gentle, and the scale prevention ability of the copolymer synthesizing is strong, and purity is high, and consumption also can reach preferable resistance less
Dirty effect.
Specific embodiment
With reference to specific embodiment, the present invention is described in further detail.
Embodiment 1
First, 10 grams of deionized waters and 12 grams of dodecyl sodium sulfates are added with stirring, Dropping feeder, thermometer
In reactor, stir 1 hour under the conditions of 80 DEG C of constant temperature, after the completion of stirring, add 5 grams of ammonium persulfates and 4 grams of n- dodecyl mereaptan.
Secondly, with 14 grams of pi-allyl sulphurs of 14 grams of dimethyl maleic anhydride solution of 3 grams of toluene dissolvings, 3 grams of toluene dissolvings
Acid sodium solution, 21 grams of methacrylic acid solutions of 4 grams of toluene dissolvings, after dissolving, alternate dropwise addition, to above-mentioned reactor, keeps 80
DEG C reaction temperature is constant, at the uniform velocity continue after completion of dropping within 1 hour stirring reaction 2 hours crude product.
Finally, the purification to crude product, adds 10 grams of toluene to dissolve crude product, stirring stands after 0.5 hour, is filtered to remove
Solid matter, then vacuum distillation desolvation obtains scaling inhibitor.
Embodiment 2
First, 18 grams of deionized waters and 5 grams of dodecyl sodium sulfates are added with stirring, Dropping feeder, thermometer
In reactor, stir 0.5 hour under the conditions of 100 DEG C of constant temperature, after the completion of stirring, add 2 grams of ammonium persulfates and 5 grams of n- dodecyl mereaptan.
Secondly, with 15 grams of dimethyl maleic anhydride solution of 3 grams of paraxylene dissolvings, 30 grams of 2 grams of paraxylene dissolvings
Allyl sulphonic acid sodium solution, 15 grams of methacrylic acid solutions of 2 grams of paraxylene dissolvings, after dissolving, alternate dropwise addition is to above-mentioned reaction
In device, keep 100 DEG C of reaction temperatures constant, continue at the uniform velocity after completion of dropping within 1.5 hours stirring reaction 0.5 hour crude product.
Finally, 3 grams of paraxylene are added to dissolve crude product, stirring stood after 0.5 hour, solids removed by filtration material, then
Vacuum distillation desolvation obtains scaling inhibitor.
Embodiment 3
First, 10 grams of deionized waters and 8 grams of dodecyl sodium sulfates are added with stirring, Dropping feeder, thermometer
In reactor, stir 2 hours under the conditions of 60 DEG C of constant temperature, after the completion of stirring, add 3 grams of ammonium persulfates and 2 grams of n- dodecyl mereaptan.
Secondly, with 30 grams of dimethyl maleic anhydride solution of 5 grams of meta-xylenes dissolvings, 10 grams of 6 grams of meta-xylene dissolvings
Allyl sulphonic acid sodium solution, 12 grams of methacrylic acid solutions of 6 grams of meta-xylene dissolvings, after dissolving, alternate dropwise addition is to above-mentioned reaction
In device, keep 60 DEG C of reaction temperatures constant, continue at the uniform velocity after completion of dropping within 2 hours stirring reaction 3 hours crude product.
Finally, 8 grams of meta-xylenes are added to dissolve crude product, stirring stood after 0.5 hour, solids removed by filtration material, then
Vacuum distillation desolvation obtains scaling inhibitor.
Embodiment 4
First, 10 grams of deionized waters and 6 grams of dodecyl sodium sulfates are added with stirring, Dropping feeder, thermometer
In reactor, stirring under the conditions of 90 DEG C of constant temperature added 10 grams of ammonium persulfates and 5 grams of n- dodecyl mereaptan after 0.8 hour.
Secondly, by with 15 grams of dimethyl maleic anhydride solution of 7 grams of ortho-xylenes dissolvings, 8 grams of ortho-xylene dissolvings 12
Gram allyl sulphonic acid sodium solution, 5 grams of ortho-xylene dissolvings 12 grams of methacrylic acid solution alternate dropwise addition to above-mentioned reactor,
Keep 90 DEG C of reaction temperatures constant, continue at the uniform velocity after completion of dropping within 1 hour stirring reaction 2 hours crude product.
Finally, 10 grams of ortho-xylenes are added to dissolve crude product, stirring stands after 0.5 hour, filters off solid matter, then reduce pressure
Distillation desolvation obtains antisludging agent.
Embodiment 5
First, 25 grams of deionized waters and 5 grams of dodecyl sodium sulfates are added with stirring, Dropping feeder, thermometer
In reactor, stirring under the conditions of 80 DEG C of constant temperature added 6 grams of ammonium persulfates and 1 gram of n- dodecyl mereaptan after 1 hour.
Secondly, by 18 grams of pi-allyls of the 10 grams of dimethyl maleic anhydride solution being dissolved with 2 grams of toluene, 8 grams of toluene dissolvings
In sodium sulfonate solution, 16 grams of methacrylic acid solution alternate dropwise addition extremely above-mentioned reactor of 4 grams of toluene dissolvings, keep 80 DEG C of reactions
Temperature constant, continue at the uniform velocity after completion of dropping within 1.5 hours stirring reaction 2 hours crude product.
3) last, add 5 grams of toluene to dissolve crude product, stirring stood after 1 hour, filtered off solid matter, then vacuum distillation
Desolvation obtains antisludging agent.
Embodiment 6
First, 10 grams of deionized waters and 5 grams of dodecyl sodium sulfates are added with stirring, Dropping feeder, thermometer
In reactor, stirring under the conditions of 100 DEG C of constant temperature added 4 grams of ammonium persulfates and 3 grams of n- dodecyl mereaptan after 0.5 hour.
Secondly, with 10 grams of pi-allyl sulphurs of 12 grams of dimethyl maleic anhydride solution of 5 grams of toluene dissolvings, 5 grams of toluene dissolvings
In acid sodium solution, 30 grams of methacrylic acid solution alternate dropwise addition extremely above-mentioned reactor of 10 grams of toluene dissolvings, keep 100 DEG C of reactions
Temperature constant, continue at the uniform velocity after completion of dropping within 1 hour stirring reaction 1.5 hours crude product.
Finally, 6 grams of toluene are added to dissolve crude product, stirring stood after 1 hour, filtered off solid matter, then vacuum distillation takes off
Except solvent obtains antisludging agent.
Embodiment 7
First, 10 grams of deionized waters and 20 grams of dodecyl sodium sulfates are added with stirring, Dropping feeder, thermometer
In reactor, stirring under the conditions of 100 DEG C of constant temperature added 2 grams of ammonium persulfates and 5 grams of n- dodecyl mereaptan after 0.5 hour.
Secondly, with 10 grams of dimethyl maleic anhydride solution of 4 grams of meta-xylenes dissolvings, 20 grams of 10 grams of meta-xylene dissolvings
In allyl sulphonic acid sodium solution, 10 grams of methacrylic acid solution alternate dropwise addition extremely above-mentioned reactor of 4 grams of meta-xylene dissolvings, protect
Hold 100 DEG C of reaction temperatures constant, continue at the uniform velocity after completion of dropping within 1 hour stirring reaction 1.5 hours crude product.
Finally, 5 grams of meta-xylenes are added to dissolve crude product, stirring stood after 1 hour, filtered off solid matter, then steaming of reducing pressure
Evaporate desolvation and obtain antisludging agent.
The above is only the preferred embodiment of the present invention it is noted that ordinary skill people for the art
For member, on the premise of without departing from the technology of the present invention principle, some improvement and modification can also be made, these improve and modification
Also should be regarded as protection scope of the present invention.
Claims (6)
1. it is characterised in that by weight percentage, it is made up a kind of scaling inhibitor of following components：
Dimethyl maleic anhydride polymerized monomer 10-30%；
ALS polymerized monomer 10-30%；
Three kinds of polymerized monomers 10-30% of methacrylic acid；
Emulsifying agent 5-20%；
Initiator 2-10%；
Organic solvent 10-30%；
Chain-transferring agent 1-5%；
Deionized water 10-25%.
2. scaling inhibitor according to claim 1 it is characterised in that：Described emulsifying agent is dodecyl sodium sulfate.
3. scaling inhibitor according to claim 2 it is characterised in that：Described initiator is ammonium persulfate.
4. scaling inhibitor according to claim 3 it is characterised in that：Described organic solvent is toluene, paraxylene, neighbour
The mixture of one or more of dimethylbenzene and meta-xylene.
5. the scaling inhibitor according to any one of Claims 1-4 it is characterised in that：Described chain-transferring agent is positive 12
Mercaptan.
6. the preparation method of scaling inhibitor described in claim 1 is it is characterised in that comprise the following steps that：
1) deionized water and emulsifying agent are added in reactor, keep the condition of 60-100 DEG C of constant temperature, stir 0.5-2 hour,
Add initiator and chain-transferring agent afterwards；
2), after the completion of adding, dimethyl maleic anhydride, ALS, three kinds of polymerized monomers of methacrylic acid are used respectively
After organic solvent dissolving, alternate dropwise addition, in above-mentioned reactor, maintains step 1) in reaction temperature constant, at the uniform velocity 1-3 hour is dripped
Add continuation stirring reaction 1-3 hour after finishing and obtain crude product；
3) add and above-mentioned steps 2) identical organic solvent dissolving crude product, stand after stirring 0.5-1 hour, be filtered to remove solid
Body material, then vacuum distillation desolvation obtains antisludging agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610778440.9A CN106380535A (en) | 2016-08-30 | 2016-08-30 | Oil field scale inhibitor and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610778440.9A CN106380535A (en) | 2016-08-30 | 2016-08-30 | Oil field scale inhibitor and preparation method thereof |
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| CN106380535A true CN106380535A (en) | 2017-02-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018196024A1 (en) * | 2017-04-27 | 2018-11-01 | 陈秋华 | Scale inhibitor for oil fields and preparation method therefor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1104653A (en) * | 1993-12-27 | 1995-07-05 | 化学工业部天津化工研究院 | Production of acid polymer from maleic acid |
| CN102219311A (en) * | 2011-03-23 | 2011-10-19 | 山东大学 | Novel multi-carboxyl and phosphorus-free polycarboxylic acid scale inhibitor and preparation method thereof |
| CN102703047A (en) * | 2012-06-19 | 2012-10-03 | 中国石油天然气股份有限公司 | Oil field scale inhibitor as well as preparation method and application thereof |
| CN103030216A (en) * | 2011-09-30 | 2013-04-10 | 中国科学院沈阳应用生态研究所 | High-temperature resisting oil field scale inhibitor with emulsifying function and preparation method thereof |
| CN105502699A (en) * | 2015-12-17 | 2016-04-20 | 常熟市水处理助剂厂有限公司 | Phosphorus-free environment-friendly scale inhibitor |
-
2016
- 2016-08-30 CN CN201610778440.9A patent/CN106380535A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1104653A (en) * | 1993-12-27 | 1995-07-05 | 化学工业部天津化工研究院 | Production of acid polymer from maleic acid |
| CN102219311A (en) * | 2011-03-23 | 2011-10-19 | 山东大学 | Novel multi-carboxyl and phosphorus-free polycarboxylic acid scale inhibitor and preparation method thereof |
| CN103030216A (en) * | 2011-09-30 | 2013-04-10 | 中国科学院沈阳应用生态研究所 | High-temperature resisting oil field scale inhibitor with emulsifying function and preparation method thereof |
| CN102703047A (en) * | 2012-06-19 | 2012-10-03 | 中国石油天然气股份有限公司 | Oil field scale inhibitor as well as preparation method and application thereof |
| CN105502699A (en) * | 2015-12-17 | 2016-04-20 | 常熟市水处理助剂厂有限公司 | Phosphorus-free environment-friendly scale inhibitor |
Non-Patent Citations (1)
| Title |
|---|
| 余敏 等: "MA-AA-MAS三元共聚物的制备及其阻垢性能研究", 《西安石油大学学报（自然科学版）》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018196024A1 (en) * | 2017-04-27 | 2018-11-01 | 陈秋华 | Scale inhibitor for oil fields and preparation method therefor |
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