CN102897926B - barium-strontium antisludging agent - Google Patents
barium-strontium antisludging agent Download PDFInfo
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- CN102897926B CN102897926B CN201210312022.2A CN201210312022A CN102897926B CN 102897926 B CN102897926 B CN 102897926B CN 201210312022 A CN201210312022 A CN 201210312022A CN 102897926 B CN102897926 B CN 102897926B
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Abstract
A kind of barium-strontium antisludging agent, make by described weight ratio primarily of following component: horse propylene copolymer 30 ~ 35%, diethylene triamine pentamethylene phosphonic 18 ~ 22%, 2-phosphate-1,2,4-butane tricarboxylate 12 ~ 16%, tensio-active agent 7 ~ 12%, ionized water 18 ~ 30%.It is low that the present invention has production cost, and production technique is simple, the features such as ant-scaling effect is strong.Maleic anhydride has the usefulness of dispersion calcium carbonate, calcium phosphate crystallite, not only has the effect of scale removal but also also has excellent corrosion inhibition; Its nontoxic, Heat stability is good, can at high temperature use.When routine maintenance, maleic anhydride and vinylformic acid, methacrylate are generated new multipolymer under certain condition; And by the Scale inhibitors that itself and other polymer de-sludging material are combined into.Its resistance barium carbonate dirt rate is more than or equal to 98%, solves in oil recovery process the problem occurring large-area fouling.
Description
Technical field
The present invention relates to a kind of Scale inhibitors, particularly a kind of barium-strontium antisludging agent.
Background technology
Along with China's major part oil field enters the water flood recovery stage, the scale problems of oil recovery and gathering system becomes increasingly conspicuous.Fouling is huge for oil field harm, and the deposition of dirt in oil recovery, gathering system can increase the resistance of fluid flowing, thus increases energy consumption; Secondly also can cause underdeposit corrosion, impact is normally produced; Dirt deposits under a subterranean formation and duct, stratum also can be caused to block.Fouling is just becoming current oil field problem in the urgent need to address.Cause the reason of each scaling in oil field a lot, sum up and get up to mainly contain two aspects: be first to be incompatible the fouling caused due to Produced Liquid and reinjected water; Next is due to different from temperature, pressure on earth's surface under stratum, the fouling that incrustation ion different solubility causes.
For the fouling of calcium carbonate and calcium sulfate, research both domestic and external is many, also form a set of effective method, but is still in the stage of research at present for the distinctive barium sulfate in oil field, Strontium Sulphate scale problems.Copolymer antisludging agent is the Novel scale inhibitor developed in recent years, because this Scale inhibitors has Heat stability is good, nontoxic, can produce with organophosphate and act synergistically, have very strong complexing action to calcium, strontium, barium, magnesium plasma, become the focus of people's research.The exploitation of barium-strontium antisludging agent to oil field of exploitation special efficacy has very large use value.Contain higher barium strontium ion in the dirt of oil field mainly because local water or injection water also have higher barium strontium ion, and be easy to sulfate radical formation barium and strontium sulfate.The hard difficulty of barium strontium dirt is removed, and is urgent problem in oilfield process.
Summary of the invention
The object of the invention is to provide a kind of barium-strontium antisludging agent, with to solve in existing oil production process fouling serious, to form after barium strontium dirt the technical problems such as hard difficult removal.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of barium-strontium antisludging agent, formulated by described weight ratio primarily of following component: horse propylene copolymer 30 ~ 35%, diethylene triamine pentamethylene phosphonic 18 ~ 22%, 2-phosphate-1,2,4-butane tricarboxylate 12 ~ 16%, tensio-active agent 7 ~ 12%, water 18 ~ 30%.
Prepare above-mentioned barium-strontium antisludging agent method: get horse propylene copolymer by described weight ratio, diethylene triamine pentamethylene phosphonic, 2-phosphate-1,2,4-butane tricarboxylate, tensio-active agent, ionized water carry out compound preparation, obtained barium-strontium antisludging agent.
As preferably, described horse propylene copolymer adopts following methods preparation: a. drops into maleic anhydride 110 ~ 130 parts of maleic anhydrides and 240 ~ 260 parts of ionized waters in a kettle., start agitator to stir, be warming up to 40 DEG C ~ 50 DEG C, add the hydrogen peroxide of 175-190 parts of volumetric concentrations 30%; Drip 290 ~ 310 parts of vinylformic acid at header tank, drip simultaneously and add 75 ~ 85 parts of methacrylate, time for adding controls at 3 hours, is warming up to 80 DEG C ~ 90 DEG C after dropwising, and stirs 2 hours, is cooled to normal temperature, obtains horse propylene copolymer.
As preferably, described tensio-active agent is the one in sodium laurylsulfate (K12 or SDS), polyoxyethylene nonylphenol ether (TX-10), lauric acid amide of ethanol (6501), glycerol stearate monoesters, sulfonated lignin, dispersing agent MF.
It is low that the present invention has production cost, and production technique is simple, the features such as ant-scaling effect is strong.Maleic anhydride has the usefulness of dispersion calcium carbonate, calcium phosphate crystallite, not only has the effect of scale removal but also also has excellent corrosion inhibition; Its nontoxic, Heat stability is good, can at high temperature use.Simultaneously also to the specific restriction of production of barium sulfate, Strontium Sulphate incrustation scale.When routine maintenance, maleic anhydride and vinylformic acid, methacrylate are generated new multipolymer under certain condition; And by the Scale inhibitors that itself and other polymer de-sludging material are combined into.Its resistance barium carbonate dirt rate is more than or equal to 98%, and resistance Strontium carbonate powder dirt rate is more than or equal to 99%, solves in oil recovery process the problem occurring large-area fouling.
Embodiment
Embodiment 1: drop into maleic anhydride 110 parts of maleic anhydrides and 260 parts of ionized waters in a kettle., start agitator and stir, be warming up to 40 DEG C ~ 50 DEG C, add the hydrogen peroxide of 175 parts of volumetric concentrations 30%; Drip 290 parts of vinylformic acid at header tank, drip simultaneously and add 85 parts of methacrylate, time for adding controls at 3 hours, is warming up to 80 DEG C ~ 90 DEG C after dropwising, and stirs 2 hours, is cooled to normal temperature, obtains horse propylene copolymer.Detect acrylic monomer content and be more than or equal to 0.2%, pH value 2.5 ± 0.2, horse propylene copolymer solid content is more than or equal to 30%.Then measure horse propylene copolymer 30%, diethylene triamine pentamethylene phosphonic 18%, 2-phosphate-1 by mass percentage, 2,4-butane tricarboxylate 12%, sodium laurylsulfate (K12 or SDS) or polyoxyethylene nonylphenol ether (TX-10) 12%, water (having allowed a small amount of impurity) 28% carry out compound preparation; Obtained weak yellow liquid is barium-strontium antisludging agent.
Embodiment 2: drop into maleic anhydride 120 parts of maleic anhydrides and 250 parts of ionized waters in a kettle., start agitator and stir, be warming up to 40 DEG C ~ 50 DEG C, add the hydrogen peroxide of 190 parts of volumetric concentrations 30%; Drip 300 parts of vinylformic acid at header tank, drip simultaneously and add 80 parts of methacrylate, time for adding controls at 3 hours, is warming up to 80 DEG C ~ 90 DEG C after dropwising, and stirs 2 hours, is cooled to normal temperature, obtains horse propylene copolymer.Detect acrylic monomer content and be more than or equal to 0.2%, pH value 2.5 ± 0.2, horse propylene copolymer solid content is more than or equal to 30%.Then measure horse propylene copolymer 32%, lauric acid amide of ethanol (6501) or glycerol stearate monoesters 20%, 2-phosphate-1 by mass percentage, 2,4-butane tricarboxylate 15%, Yelkin TTS 10%, water (having allowed a small amount of impurity) 23% carry out compound preparation; Obtained weak yellow liquid is barium-strontium antisludging agent.
Embodiment 3: drop into maleic anhydride 130 parts of maleic anhydrides and 240 parts of ionized waters in a kettle., start agitator and stir, be warming up to 40 DEG C ~ 50 DEG C, add the hydrogen peroxide of 185 parts of volumetric concentrations 30%; Drip 310 parts of vinylformic acid at header tank, drip simultaneously and add 80 parts of methacrylate, time for adding controls at 3 hours, is warming up to 80 DEG C ~ 90 DEG C after dropwising, and stirs 2 hours, is cooled to normal temperature, obtains horse propylene copolymer.Detect acrylic monomer content and be more than or equal to 0.2%, pH value 2.5 ± 0.2, horse propylene copolymer solid content is more than or equal to 30%.Then measure horse propylene copolymer 35%, diethylene triamine pentamethylene phosphonic 22%, 2-phosphate-1 by mass percentage, 2,4-butane tricarboxylate 16%, sulfonated lignin or dispersing agent MF 7%, water (having allowed a small amount of impurity) 20% carry out compound preparation; Obtained weak yellow liquid is barium-strontium antisludging agent.
In order to verify effect of the present invention, inventors performed a series of simultaneous test.
One. static-state scale inhibition is tested.
1. calcium carbonate static test the results are shown in shown in following table:
Table 1: calcium carbonate static test
Testing data shows: when adding more than 60ppm, and scale inhibition performance of the present invention can reach more than 95.1%.
2. calcium sulfate static test the results are shown in shown in following table:
Table 2: calcium sulfate static test
Testing data shows: when adding more than 60ppm, and scale inhibition performance of the present invention can reach more than 93.5%.
3. barium sulfate static test the results are shown in shown in following table:
Table 3: barium sulfate static test
Testing data shows: when adding more than 60ppm, and scale inhibition performance of the present invention can reach more than 93.8%.
Two. static-state scale inhibition contrast experiment: with " scale inhibitor for oilfield Reliable Evaluating Methods of Their Performance " for standard is evaluated.Select embodiment 1,2,3, compare with existing barium-strontium antisludging agent under water bath with thermostatic control 50 ± 1 DEG C, adding of agent concentration 60ppm condition.Its experiment the results are shown in shown in following table:
Table 4: barium sulfate, Strontium Sulphate static-state scale inhibition contrast experiment
| Scale inhibition performance | Scale inhibition barium sulfate rate (mg/L) of the present invention | Existing scale inhibition barium sulfate rate (mg/L) | Scale inhibition Strontium Sulphate rate (mg/L) of the present invention | Existing scale inhibition Strontium Sulphate rate (mg/L) |
| Embodiment 1 | 93.8 | 80.2 | 98.9 | 85.1 |
| Embodiment 2 | 95.8 | 79.8 | 96.5 | 85.2 |
| Embodiment 3 | 94.7 | 80.5 | 93.8 | 84.9 |
Above-mentioned statistic data shows: relatively existing barium-strontium antisludging agent, and scale inhibition performance of the present invention has and shows more by force, its high comprehensive performance.
Claims (1)
1. a barium-strontium antisludging agent, it is characterized in that it is formulated by described weight ratio primarily of following component: horse propylene copolymer 30 ~ 35%, diethylene triamine pentamethylene phosphonic 18 ~ 22%, 2-phosphate-1,2,4-butane tricarboxylate 12 ~ 16%, tensio-active agent 7 ~ 12%, water 18 ~ 30%; Described horse propylene copolymer adopts following methods preparation: a. drops into 110 ~ 130 parts of maleic anhydrides and 240 ~ 260 parts of ionized waters in a kettle., starts agitator and stirs, and is warming up to 40 DEG C ~ 50 DEG C, adds the hydrogen peroxide of 175-190 parts of volumetric concentrations 30%; Drip 290 ~ 310 parts of vinylformic acid at header tank, drip simultaneously and add 75 ~ 85 parts of methyl acrylates, time for adding controls at 3 hours, is warming up to 80 DEG C ~ 90 DEG C after dropwising, and stirs 2 hours, is cooled to normal temperature, obtains horse propylene copolymer; Described tensio-active agent is the one in sodium laurylsulfate, polyoxyethylene nonylphenol ether, lauric acid amide of ethanol, sulfonated lignin, dispersing agent MF.
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103232118B (en) * | 2013-06-04 | 2015-04-01 | 南京林业大学 | Sodium lignin sulfonate compound corrosion and scale inhibitor and preparation method thereof |
| CN103820150A (en) * | 2014-03-14 | 2014-05-28 | 西安石油大学 | Barium sulfate and strontium sulfate descaling agent and preparation method thereof |
| CN104773847B (en) * | 2015-04-24 | 2016-07-20 | 中冶华天工程技术有限公司 | Phosphono copolymer of maleic anhydride and acrylic acid and preparation method thereof, application |
| CN104987858B (en) * | 2015-07-24 | 2018-01-12 | 中国石油集团渤海钻探工程有限公司 | Barium strontium scale washing agent and preparation method thereof |
| CN105524605B (en) * | 2015-12-09 | 2018-07-13 | 中国石油天然气股份有限公司 | A kind of modifying agent preventing bittern fouling |
| CN111807527A (en) * | 2020-06-30 | 2020-10-23 | 天津正达科技有限责任公司 | Strontium-barium scale inhibitor for oil field water treatment and preparation method thereof |
| CN115746812B (en) * | 2022-11-30 | 2023-09-29 | 陕西延长石油（集团）有限责任公司 | Barium strontium scale solid scale inhibitor capable of being rapidly detected and preparation method and application thereof |
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Effective date of registration: 20200508 Address after: L305, F3, building 223, No.28, Guangqu Road, Chaoyang District, Beijing 100022 Patentee after: Beijing Dongfang Huasheng Technology Co., Ltd Address before: 433000 Shuanglong Economic Development Zone, Yuan City, Hubei, Xiantao Patentee before: XIANTAO ZHONGCHU CHEMICAL INDUSTRY Co.,Ltd. |
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Effective date of registration: 20210420 Address after: 433000 Heba chemical industry park, Xiantao hi tech Industrial Development Zone, Wuhan City, Hubei Province Patentee after: XIANTAO ZHONGCHU CHEMICAL INDUSTRY Co.,Ltd. Address before: L305, F3, building 223, No.28, Guangqu Road, Chaoyang District, Beijing 100022 Patentee before: Beijing Dongfang Huasheng Technology Co.,Ltd. |