CN101798502B - Antisludging agent for preventing deposition of Sr/Ba scale - Google Patents
Antisludging agent for preventing deposition of Sr/Ba scale Download PDFInfo
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Abstract
The invention relates to an antisludging agent for preventing the deposition of Sr/Ba scale and the antisludging agent is used to prevent the deposition of Sr/Ba scale of an oil well during oil field production process. The antisludging agent comprises the following components by weight percent: 8.5-12% of dodecylaminoethyl phosphate, 7.5-9.0% of myristylaminoethyl phosphate, 5-6.5% of EDTA disodium salt, 2.5-3.0% of EDTP tetrasodium salt, 3.5-4.5% of ethylenediamine tetra methylenephosphonic acid, 0.05-0.08% of vitamin A, 0.05-0.12% of vitamin C, 0.005-0.01% of potassium iodide, 0.0005-0.001% of alpha-amino-3-methylbutyric acid, 0.0005-0.0010% of aspartic acid and the balance water, wherein the sum of the weight percentages of the components is 100%. The beneficial effect of the antisludging agent is as follows: when 25-30mg/l of the antisludging agent of the invention is used in the daily maintenance of the oil well, the scale preventing rate is more than 90% and the pump detection period of the oil well can be increased by more than once.
Description
Technical field
The present invention relates to petroleum industry and use the chemical technical field, relate in particular to the Scale inhibitors that prevents oil well barium strontium dirt deposition in the oil recovery process.
Background technology
During getting into, the part oil field behind the high water-cut stage, contains barium, strontium, sulfate radical, carbanion, along with the variation of extraction liquid temp, at tube inner wall, sucker rod surface, the hard barium strontium dirt of the inner formation of gathering pipeline owing in the recovered water.And conventional barium strontium dirt prevents that method is ineffective, and this dirt is insoluble to acid simultaneously, has brought a lot of inconvenience for the oil field production management.
At present, the chemical scale inhibition agent roughly is divided three classes: i.e. aminopolycarboxylic acid's salt, phosphorus compound class and organic polymer class.Aminopolycarboxylic acid's salt is one a type low molecule sequestrant, like disodium EDTA (EDTA), CDTA salt (DCTA), ethylenediamine tetrapropionic acid(EDTP) salt (EDTP) etc.This type sequestrant is a low molecular compound, and the chelating stability constant is big, can be used for comparatively high temps, but because consumption is big, cost is high, and its application is restricted.
Mostly phosphorus compound class scale inhibitor is the organic multicomponent phosphonic acids.Like the ethylene diamine tetra methylene phosphonic acid (EDTMP) of methylenephosphonic acid type, with the HEDP (HEDP) of carbon diphosphine acid type, 4 of carboxy phosphonic acid type, 4-'-diphosphono-1,7-pimelic acid etc.Organic multicomponent phosphonic acid based scale inhibitor have consumption little, can bear comparatively high temps, lime carbonate is had higher advantages such as antiscale efficient, more in field use, relatively poor to the antiscaling effect of permanent white, Strontium Sulphate, scale inhibition performance has only about 40%.
The organic polymer scale inhibitor mainly is HPMA and ROHM and their multipolymer.The antiscale mechanism of this base polymer be on the polymer molecular chain carboxyl can with the polyvalent metal ion complexing, the complexing of a plurality of carboxyls then forms inner complex and has anti-scaling property.This base polymer is to the too late organic multicomponent phosphonic acids of the antiscale efficient of lime carbonate, calcium sulfate, though permanent white, Strontium Sulphate are had antiscaling effect, efficient is lower.
Summary of the invention
The objective of the invention is: a kind of Scale inhibitors that prevents barium strontium dirt deposition and preparation method thereof is provided.When the oil well routine maintenance, add Scale inhibitors, when the Scale inhibitors dosage that prevents barium strontium dirt deposition is under the situation of 25～30mg/l, scale inhibition performance is greater than 90%, and the pump detection period of oil well prolongs more than 1 times.
The technical scheme that the present invention adopts is:
Prevent the raw material and the prescription of the Scale inhibitors of barium strontium dirt deposition:
Raw material comprises:
1, dodecyl amido ethyl phosphonic acid ester (industrial goods), another name: C
12HEP;
Huang Hongzhou edits Chinese tensio-active agent overview one book, the 583rd page of Chemical Industry Press.
Factory: department of chemistry of Nanjing Normal University, fine chemistry industry system of East China University of Science.
2, tetradecyl amido ethyl phosphonic acid ester (industrial goods), another name: C
14HEP;
Huang Hongzhou edits Chinese tensio-active agent overview one book, the 584th page of Chemical Industry Press.
Factory: department of chemistry of Nanjing Normal University, fine chemistry industry system of East China University of Science.
3, disodium EDTA (industrial goods);
4, ethylenediamine tetrapropionic acid(EDTP) tetra-na salt (industrial goods);
5, ethylene diamine tetra methylene phosphonic acid (industrial goods);
6, vitamin A (A1 or A2) (industrial goods);
Be a unsaturated monohydroxy-alcohol, comprise two kinds of retinol1, A2 with ester ring.Retinol1 and A2 structural similitude).In this effect: serve as the nutrition source of sulphate reducing bacteria (SRB), stop it that sulfate ion is reduced into the underdeposit corrosion that the sulfonium ion of negative divalence causes.
7, vitamins C (industrial goods);
Acidity has stronger reductibility, heating or easy oxygenolysis in solution; Under alkaline condition, more be prone to oxidized; Be the hexose verivate, serve as the nutrition source of sulphate reducing bacteria (SRB), stop it that sulfate ion is reduced into the underdeposit corrosion that the sulfonium ion of negative divalence causes in this effect.
8, potassiumiodide (industrial goods),
Potassiumiodide is stablizer and solubility promoter, and the potassiumiodide of feed grade also can be cooked the supplement as iodine in the feed processing, makes synergistic agent at this.
9, alpha-amino group-3 Methylbutanoic acid (industrial goods) has another name called Xie Ansuan; Structural formula is:
Manufacturer: Chengdu Kai Taixin new technology Ltd
10, aspartic acid (industrial goods), structural formula is:
Manufacturer: Chengdu Kai Taixin new technology Ltd
11, water.
Each weight percentages of components that prevents the Scale inhibitors of barium strontium dirt deposition is:
1, dodecyl amido ethyl phosphonic acid ester (industrial goods): 8.5～12%;
2, tetradecyl amido ethyl phosphonic acid ester (industrial goods): 7.5～9.0%;
3, disodium EDTA (industrial goods): 5～6.5%;
4, ethylenediamine tetrapropionic acid(EDTP) tetra-na salt (industrial goods): 2.5～3.0%;
5, ethylene diamine tetra methylene phosphonic acid (industrial goods): 3.5～4.5%;
6, vitamin A (industrial goods): 0.05～0.08%;
7, vitamins C (industrial goods): 0.05～0.12%;
8, potassiumiodide (industrial goods): 0.005～0.01%;
9, alpha-amino group-3 Methylbutanoic acid (industrial goods): 0.0005～0.001%;
10, aspartic acid (industrial goods): 0.0005～0.001%;
11, all the other are water; Each weight percentages of components sum is 100%.
Prevent the preparation method of the Scale inhibitors of barium strontium dirt deposition
Major equipment:
Enamel reaction still with 2000L of stirring, heating, cooling and vacuum system.
Working method:
At first, add dodecyl amido ethyl phosphonic acid ester and tetradecyl amido ethyl phosphonic acid ester in the enamel reaction still in proportion; Adding need add 8% of entry again, after stirring slowly is warmed up to 45～50 ℃ simultaneously, and restir 30 minutes; Add disodium EDTA, ethylenediamine tetrapropionic acid(EDTP) tetra-na salt and ethylene diamine tetra methylene phosphonic acid, vitamin A, vitamins C, potassiumiodide successively in proportion, stir while adding; Add alpha-amino group-3 Methylbutanoic acid and aspartic acid then in proportion, stirred 30 minutes; Add the water of remainder at last and stirred 30 minutes, stop heating; Stir while cooling off, be cooled to normal temperature, be prevented the Scale inhibitors of barium strontium dirt deposition.
Beneficial effect of the present invention: when the oil well routine maintenance, add the Scale inhibitors that prevents barium strontium dirt deposition from the oil jacket annular space of oil well, dosage is that every liter of oilwell produced fluid amount adds 25～30mg, and scale inhibition performance makes the pump detection period of oil well prolong more than 1 times greater than 90%.
Embodiment
Embodiment 1: each weight percentages of components that prevents the Scale inhibitors of barium strontium dirt deposition is:
1, dodecyl amido ethyl phosphonic acid ester (industrial goods): 8.5%;
2, tetradecyl amido ethyl phosphonic acid ester (industrial goods): 8.9%;
3, disodium EDTA (industrial goods): 6.5%;
4, ethylenediamine tetrapropionic acid(EDTP) tetra-na salt (industrial goods): 2.5%;
5, ethylene diamine tetra methylene phosphonic acid (industrial goods): 3.6%;
6, vitamin A (industrial goods): 0.06%;
7, vitamins C (industrial goods): 0.07%;
8, potassiumiodide (industrial goods): 0.006%;
9, alpha-amino group-3 Methylbutanoic acid (industrial goods): 0.0005%;
10, aspartic acid (industrial goods): 0.0005%;
11, water: 69.863%.
Its preparation method is:
At first, add dodecyl amido ethyl phosphonic acid ester and tetradecyl amido ethyl phosphonic acid ester in the enamel reaction still in proportion; Adding need add 8% of entry again, after stirring slowly is warmed up to 45～50 ℃ simultaneously, and restir 30 minutes; Add disodium EDTA, ethylenediamine tetrapropionic acid(EDTP) tetra-na salt and ethylene diamine tetra methylene phosphonic acid, vitamin A, vitamins C, potassiumiodide successively in proportion, stir while adding; Add alpha-amino group-3 Methylbutanoic acid and aspartic acid then in proportion, stirred 30 minutes; Add the water of remainder at last and stirred 30 minutes, stop heating; Stir while cooling off, be cooled to normal temperature, be prevented the Scale inhibitors of barium strontium dirt deposition.
Effect: when the Scale inhibitors dosage that prevents barium strontium dirt deposition is under the situation of 25mg/l, scale inhibition performance is 91.39%, and the oil well pump detection period prolongs 1.2 times.
Embodiment 2: each weight percentages of components that prevents the Scale inhibitors of barium strontium dirt deposition is:
1, dodecyl amido ethyl phosphonic acid ester (industrial goods): 9%;
2, tetradecyl amido ethyl phosphonic acid ester (industrial goods): 8.5%;
3, disodium EDTA (industrial goods): 6.2%;
4, ethylenediamine tetrapropionic acid(EDTP) tetra-na salt (industrial goods): 2.7%;
5, ethylene diamine tetra methylene phosphonic acid (industrial goods): 3.9%;
6, vitamin A (industrial goods): 0.05%;
7, vitamins C (industrial goods): 0.05%;
8, potassiumiodide (industrial goods): 0.005%;
9, alpha-amino group-3 Methylbutanoic acid (industrial goods): 0.0006%;
10, aspartic acid (industrial goods): 0.0007%;
11, all the other are water; Each weight percentages of components sum is 100% (water is 69.5937%).
The preparation method of embodiment 2 is identical with embodiment 1.
Effect: when the Scale inhibitors dosage that prevents barium strontium dirt deposition is under the situation of 28mg/l, scale inhibition performance is 92.03%, and the pump detection period of oil well prolongs 1.5 times.
Embodiment 3: each weight percentages of components that prevents the Scale inhibitors of barium strontium dirt deposition is:
1, dodecyl amido ethyl phosphonic acid ester (industrial goods): 9.6%;
2, tetradecyl amido ethyl phosphonic acid ester (industrial goods): 8%;
3, disodium EDTA (industrial goods): 6%;
4, ethylenediamine tetrapropionic acid(EDTP) tetra-na salt (industrial goods): 2.8%;
5, ethylene diamine tetra methylene phosphonic acid (industrial goods): 4.1%;
6, vitamin A (industrial goods): 0.07%;
7, vitamins C (industrial goods): 0.08%;
8, potassiumiodide (industrial goods): 0.008%;
9, alpha-amino group-3 Methylbutanoic acid (industrial goods): 0.0007%;
10, aspartic acid (industrial goods): 0.0008%;
11, water is 69.3485%.
The preparation method of embodiment 3 is identical with embodiment 1.
Effect: when the Scale inhibitors dosage that prevents barium strontium dirt deposition is under the situation of 29mg/l, scale inhibition performance is 91.72%, and the pump detection period of oil well prolongs 1.7 times.
Embodiment 4: each weight percentages of components that prevents the Scale inhibitors of barium strontium dirt deposition is:
1, dodecyl amido ethyl phosphonic acid ester (industrial goods): 11%;
2, tetradecyl amido ethyl phosphonic acid ester (industrial goods): 7.8%;
3, disodium EDTA (industrial goods): 5.5%;
4, ethylenediamine tetrapropionic acid(EDTP) tetra-na salt (industrial goods): 2.9%;
5, ethylene diamine tetra methylene phosphonic acid (industrial goods): 4.2%;
6, vitamin A (industrial goods): 0.07%;
7, vitamins C (industrial goods): 0.10%;
8, potassiumiodide (industrial goods): 0.009%;
9, alpha-amino group-3 Methylbutanoic acid (industrial goods): 0.0008%;
10, aspartic acid (industrial goods): 0.0009%;
11, water is 68.4193%.
The preparation method of embodiment 4 is identical with embodiment 1.
Effect: when the Scale inhibitors dosage that prevents barium strontium dirt deposition is under the situation of 28mg/l, scale inhibition performance is 92.32%, and the pump detection period of oil well prolongs 1.9 times.
Embodiment 5: each weight percentages of components that prevents the Scale inhibitors of barium strontium dirt deposition is:
1, dodecyl amido ethyl phosphonic acid ester (industrial goods): 11.8%;
2, tetradecyl amido ethyl phosphonic acid ester (industrial goods): 7.5%;
3, disodium EDTA (industrial goods): 5.2%;
4, ethylenediamine tetrapropionic acid(EDTP) tetra-na salt (industrial goods): 3%;
5, ethylene diamine tetra methylene phosphonic acid (industrial goods): 4.4%;
6, vitamin A (industrial goods): 0.08%;
7, vitamins C (industrial goods): 0.12%;
8, potassiumiodide (industrial goods): 0.01%;
9, alpha-amino group-3 Methylbutanoic acid (industrial goods): 0.001%;
10, aspartic acid (industrial goods): 0.001%;
11, all the other are water; Each weight percentages of components sum is 100% (67.888%).
The preparation method of embodiment 5 is identical with embodiment 1.
Effect: when the Scale inhibitors dosage that prevents barium strontium dirt deposition is under the situation of 25mg/l, scale inhibition performance is 90.69%, and the pump detection period of oil well prolongs 1.3 times.
Claims (2)
1. Scale inhibitors that prevents barium strontium dirt deposition, it is characterized in that: each weight percentages of components is:
Dodecyl amido ethyl phosphonic acid ester: 8.5～12%;
Tetradecyl amido ethyl phosphonic acid ester: 7.5～9.0%;
Disodium EDTA: 5～6.5%;
Ethylenediamine tetrapropionic acid(EDTP) tetra-na salt: 2.5～3.0%;
Ethylene diamine tetra methylene phosphonic acid: 3.5～4.5%;
Vitamin A: 0.05～0.08%;
Vitamins C: 0.05～0.12%;
Potassiumiodide: 0.005～0.01%;
Alpha-amino group-3 Methylbutanoic acid: 0.0005～0.001%;
Aspartic acid: 0.0005～0.001%;
All the other are water; Each weight percentages of components sum is 100%.
2. the Scale inhibitors that prevents barium strontium dirt deposition according to claim 1, it is characterized in that: its preparation method is:
At first, add dodecyl amido ethyl phosphonic acid ester and tetradecyl amido ethyl phosphonic acid ester in the enamel reaction still in proportion; Adding need add 8% of entry again, after stirring slowly is warmed up to 45～50 ℃ simultaneously, and restir 30 minutes; Add disodium EDTA, ethylenediamine tetrapropionic acid(EDTP) tetra-na salt and ethylene diamine tetra methylene phosphonic acid, vitamin A, vitamins C, potassiumiodide successively in proportion, stir while adding; Add alpha-amino group-3 Methylbutanoic acid and aspartic acid then in proportion, stirred 30 minutes; Add the water of remainder at last and stirred 30 minutes, stop heating; Stir while cooling off, be cooled to normal temperature, be prevented the Scale inhibitors of barium strontium dirt deposition.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010144967 CN101798502B (en) | 2010-04-09 | 2010-04-09 | Antisludging agent for preventing deposition of Sr/Ba scale |
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| CN 201010144967 CN101798502B (en) | 2010-04-09 | 2010-04-09 | Antisludging agent for preventing deposition of Sr/Ba scale |
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| CN101798502B true CN101798502B (en) | 2012-12-12 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174315B (en) * | 2011-03-10 | 2013-02-13 | 中国石油天然气股份有限公司 | Scale removing and inhibiting agent for later-stage oil well with tertiary oil recovery |
| CN104962266A (en) * | 2015-06-17 | 2015-10-07 | 成都高普石油工程技术有限公司 | Oil well cleaning scale inhibitor |
| CN105060515A (en) * | 2015-06-30 | 2015-11-18 | 苏州佑君环境科技有限公司 | Scale inhibitor for preventing deposition of barium and strontium scales, and preparation method thereof |
| CN106398659A (en) * | 2016-08-30 | 2017-02-15 | 陕西省石油化工研究设计院 | Calcium fluoride stabilizing agent |
| CN106833580A (en) | 2016-12-29 | 2017-06-13 | 中国石油天然气股份有限公司 | A kind of hyposmosis water injection well increasing injection scale preventative and preparation method thereof |
| CN107570016A (en) * | 2017-09-27 | 2018-01-12 | 中海油天津化工研究设计院有限公司 | A kind of concentrated water reverse osmosis antisludging agent and preparation method thereof |
| CN112745820A (en) * | 2021-02-01 | 2021-05-04 | 西南石油大学 | Barium sulfate scale dissolving agent |
| CN114106804B (en) * | 2022-01-28 | 2022-05-17 | 胜利油田胜利化工有限责任公司 | High-temperature-resistant esterification type composite scale inhibitor and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1491908A (en) * | 2003-08-20 | 2004-04-28 | 东营联通化工有限责任公司 | Barium-strontium scale resistant agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1491908A (en) * | 2003-08-20 | 2004-04-28 | 东营联通化工有限责任公司 | Barium-strontium scale resistant agent |
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