CN104150618B - Oilfield exploitation Scale inhibitors and preparation method thereof - Google Patents
Oilfield exploitation Scale inhibitors and preparation method thereof Download PDFInfo
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- CN104150618B CN104150618B CN201410375524.9A CN201410375524A CN104150618B CN 104150618 B CN104150618 B CN 104150618B CN 201410375524 A CN201410375524 A CN 201410375524A CN 104150618 B CN104150618 B CN 104150618B
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Abstract
Oilfield exploitation Scale inhibitors and preparation method thereof, does this oilfield exploitation Scale inhibitors comprise the following component according to weight parts: two hexamethylene triamine five methylenephosphonic acid 3-12 part, poly-epoxy succinic acid 1-2 part, molybdate 10-18 part, tetrahydroglyoxaline 3-6 part, polymaleic anhydride 6-12 part, dimethyl formamide 1-5 part, zinc sulfate 5-8 part, Trisodium Citrate 3-6 part, poly aspartic acid 8-14 part, EDTA? 5-15 part, ethyl acetate 18-27 part, ethanol 15-19 part, water 16-20 part.Scale inhibitors of the present invention can with the salt chelating in recovered water, and make recovered water avoid the formation of dirt when using as reinjected water, its scale inhibition performance can up to 99.9%; The present invention, while scale inhibition, also has excellent corrosion inhibition, and can not injure pipeline precocity after using, corrosion inhibition rate can reach 90%.
Description
Technical field
The invention belongs to petroleum additive technical field, be specifically related to a kind of oilfield exploitation Scale inhibitors and preparation method thereof.
Background technology
At present, along with the development of China's oilfield exploitation, oil field in after the productive life, because oil and gas production declines, therefore most of oil field adopts the mode of water flooding recovery, improves oil and gas production successively.And while exploitation, many chemical assistants can be used to make oilfield exploitation more convenient.And the drawback meanwhile brought is: due to the continuous use of auxiliary agent, make the composition in recovered water very complicated, thus the intractability of sewage is strengthened.
The recovered water in general oil field can utilize being used to after follow-up treatment process re-injection, if not in place to the process of recovered water, recovered water can be made when re-injection utilizes, the fouling of pipeline big area is caused due to a large amount of impurity wherein contained, thus cause line clogging, make exploitation work extremely difficult.The chemical additive that oil field class uses when exploiting is of a great variety, in order to solve the problem, most of oil field can use Scale inhibitors to process it when processing recovered water, and to make the compound in the salts such as the calcium in water, magnesium and Scale inhibitors issue licence sequestering action, thus it is dirty to prevent it from being formed.
And though general Scale inhibitors has certain scale effect to recovered water, but due to Scale inhibitors itself formula impact, make its poor effect, and do not weaken the scaling rate in recovered water, can only temporarily suppress scale inhibition phenomenon.
Therefore a kind of Scale inhibitors of excellent performance just seems particularly important.
Summary of the invention
The present invention is in order to solve the deficiencies in the prior art, and provide a kind of oilfield exploitation Scale inhibitors and preparation method thereof, this Scale inhibitors has good scale-inhibiting properties, also has slow decorations effect simultaneously.
Technical scheme of the present invention:
Oilfield exploitation Scale inhibitors, comprise the following component according to weight parts: two hexamethylene triamine five methylenephosphonic acid 3-12 part, poly-epoxy succinic acid 1-2 part, molybdate 10-18 part, tetrahydroglyoxaline 3-6 part, polymaleic anhydride 6-12 part, dimethyl formamide 1-5 part, zinc sulfate 5-8 part, Trisodium Citrate 3-6 part, poly aspartic acid 8-14 part, EDTA5-15 part, ethyl acetate 18-27 part, ethanol 15-19 part, water 16-20 part.
Described oilfield exploitation Scale inhibitors, comprise the following component according to weight parts: two hexamethylene triamine five methylenephosphonic acid 3-10 part, poly-epoxy succinic acid 1-2 part, molybdate 10-15 part, tetrahydroglyoxaline 3-5 part, polymaleic anhydride 6-10 part, dimethyl formamide 1-4 part, zinc sulfate 5-7 part, Trisodium Citrate 3-5 part, poly aspartic acid 8-10 part, EDTA5-10 part, ethyl acetate 18-24 part, ethanol 15-18 part, water 16-19 part.
Described oilfield exploitation Scale inhibitors, comprise the following component according to weight parts: two hexamethylene triamine five methylenephosphonic acid 10 parts, poly-epoxy succinic acid 2 parts, molybdate 15 parts, tetrahydroglyoxaline 5 parts, polymaleic anhydride 10 parts, dimethyl formamide 4 parts, 7 parts, zinc sulfate, Trisodium Citrate 5 parts, poly aspartic acid 10 parts, EDTA10 part, ethyl acetate 24 parts, ethanol 18 parts, 19 parts, water.
Described oilfield exploitation Scale inhibitors, wherein said molybdate is ammonium molybdate.
The preparation method of oilfield exploitation Scale inhibitors, comprises the steps:
The first step, adds two hexamethylene triamine five methylenephosphonic acid, poly-epoxy succinic acid, tetrahydroglyoxaline, polymaleic anhydride, dimethyl formamide, poly aspartic acid successively in ethyl acetate, stirs, obtain mixture A;
Second step, adds molybdate, zinc sulfate, Trisodium Citrate and EDTA successively in said mixture A, is warming up to 90-95 DEG C, is cooled to 45 DEG C, adds the mixture of second alcohol and water after stirring 30min, and continue to stir 1h, rear standing naturally cooling, to obtain final product; Wherein, the stirring velocity in step one and step 2 is 90-120r/min.
beneficial effect of the present invention:
The first, Scale inhibitors of the present invention can with the salt chelating in recovered water, and make recovered water avoid the formation of dirt when using as reinjected water, its scale inhibition performance can up to 99.9%;
The second, the present invention is while scale inhibition, also has excellent corrosion inhibition, and can not injure pipeline precocity after using, corrosion inhibition rate can reach 90%;
Three, preparation method of the present invention is simple, and raw material sources are extensively cheap and easy to get, can wide popularization and application.
Embodiment
Below in conjunction with embodiment, set forth the present invention further.
Embodiment 1
Oilfield exploitation Scale inhibitors, comprise the following component according to weight parts: two hexamethylene triamine five methylenephosphonic acid 3 parts, poly-epoxy succinic acid 1 part, ammonium molybdate 10 parts, tetrahydroglyoxaline 3 parts, polymaleic anhydride 6 parts, dimethyl formamide 1 part, 5 parts, zinc sulfate, Trisodium Citrate 3 parts, poly aspartic acid 8 parts, EDTA5 part, ethyl acetate 18 parts, ethanol 15 parts, 16 parts, water.
The preparation method of the present embodiment, comprises the steps:
The first step, adds two hexamethylene triamine five methylenephosphonic acid, poly-epoxy succinic acid, tetrahydroglyoxaline, polymaleic anhydride, dimethyl formamide, poly aspartic acid successively in ethyl acetate, stirs, obtain mixture A;
Second step, adds in said mixture A successively by ammonium molybdate, zinc sulfate, Trisodium Citrate and EDTA, is warming up to 90 DEG C, is cooled to 45 DEG C, adds the mixture of second alcohol and water after stirring 30min, and continue to stir 1h, rear standing naturally cooling, to obtain final product; Wherein, the stirring velocity in step one and step 2 is 90r/min.
Embodiment 2
Oilfield exploitation Scale inhibitors, comprise the following component according to weight parts: two hexamethylene triamine five methylenephosphonic acid 12 parts, poly-epoxy succinic acid 2 parts, ammonium molybdate 18 parts, tetrahydroglyoxaline 6 parts, polymaleic anhydride 12 parts, dimethyl formamide 5 parts, 8 parts, zinc sulfate, Trisodium Citrate 6 parts, poly aspartic acid 14 parts, EDTA15 part, ethyl acetate 27 parts, ethanol 19 parts, 20 parts, water.
The preparation method of the present embodiment, comprises the steps:
The first step, adds two hexamethylene triamine five methylenephosphonic acid, poly-epoxy succinic acid, tetrahydroglyoxaline, polymaleic anhydride, dimethyl formamide, poly aspartic acid successively in ethyl acetate, stirs, obtain mixture A;
Second step, adds in said mixture A successively by ammonium molybdate, zinc sulfate, Trisodium Citrate and EDTA, is warming up to 95 DEG C, is cooled to 45 DEG C, adds the mixture of second alcohol and water after stirring 30min, and continue to stir 1h, rear standing naturally cooling, to obtain final product; Wherein, the stirring velocity in step one and step 2 is 120r/min.
Embodiment 3
Oilfield exploitation Scale inhibitors, comprise the following component according to weight parts: two hexamethylene triamine five methylenephosphonic acid 10 parts, poly-epoxy succinic acid 2 parts, ammonium molybdate 15 parts, tetrahydroglyoxaline 5 parts, polymaleic anhydride 10 parts, dimethyl formamide 4 parts, 7 parts, zinc sulfate, Trisodium Citrate 5 parts, poly aspartic acid 10 parts, EDTA10 part, ethyl acetate 24 parts, ethanol 18 parts, 19 parts, water.
The preparation method of the present embodiment, comprises the steps:
The first step, adds two hexamethylene triamine five methylenephosphonic acid, poly-epoxy succinic acid, tetrahydroglyoxaline, polymaleic anhydride, dimethyl formamide, poly aspartic acid successively in ethyl acetate, stirs, obtain mixture A;
Second step, adds in said mixture A successively by ammonium molybdate, zinc sulfate, Trisodium Citrate and EDTA, is warming up to 92 DEG C, is cooled to 45 DEG C, adds the mixture of second alcohol and water after stirring 30min, and continue to stir 1h, rear standing naturally cooling, to obtain final product; Wherein, the stirring velocity in step one and step 2 is 90r/min.
Embodiment 4
Oilfield exploitation Scale inhibitors, comprise the following component according to weight parts: two hexamethylene triamine five methylenephosphonic acid 7 parts, poly-epoxy succinic acid 1 part, ammonium molybdate 14 parts, tetrahydroglyoxaline 4 parts, polymaleic anhydride 8 parts, dimethyl formamide 3 parts, 6 parts, zinc sulfate, Trisodium Citrate 4 parts, poly aspartic acid 9 parts, EDTA7 part, ethyl acetate 19 parts, ethanol 16 parts, 17 parts, water.
The preparation method of the present embodiment, comprises the steps:
The first step, adds two hexamethylene triamine five methylenephosphonic acid, poly-epoxy succinic acid, tetrahydroglyoxaline, polymaleic anhydride, dimethyl formamide, poly aspartic acid successively in ethyl acetate, stirs, obtain mixture A;
Second step, adds in said mixture A successively by ammonium molybdate, zinc sulfate, Trisodium Citrate and EDTA, is warming up to 90 DEG C, is cooled to 45 DEG C, adds the mixture of second alcohol and water after stirring 30min, and continue to stir 1h, rear standing naturally cooling, to obtain final product; Wherein, the stirring velocity 120r/min in step one and step 2.
Reference examples 1
Be with the difference of embodiment 3: do not add dimethyl formamide.
Oilfield exploitation Scale inhibitors, comprise the following component according to weight parts: two hexamethylene triamine five methylenephosphonic acid 10 parts, poly-epoxy succinic acid 2 parts, ammonium molybdate 15 parts, tetrahydroglyoxaline 5 parts, polymaleic anhydride 10 parts, 7 parts, zinc sulfate, Trisodium Citrate 5 parts, poly aspartic acid 10 parts, EDTA10 part, ethyl acetate 24 parts, ethanol 18 parts, 19 parts, water.
The preparation method of the present embodiment, comprises the steps:
The first step, adds two hexamethylene triamine five methylenephosphonic acid, poly-epoxy succinic acid, tetrahydroglyoxaline, polymaleic anhydride, poly aspartic acid successively in ethyl acetate, stirs, obtain mixture A;
Second step, adds in said mixture A successively by ammonium molybdate, zinc sulfate, Trisodium Citrate and EDTA, is warming up to 92 DEG C, is cooled to 45 DEG C, adds the mixture of second alcohol and water after stirring 30min, and continue to stir 1h, rear standing naturally cooling, to obtain final product; Wherein, the stirring velocity in step one and step 2 is 90r/min.
Reference examples 2
Be with the difference of embodiment 3: do not add dimethyl formamide and polymaleic anhydride.
Oilfield exploitation Scale inhibitors, comprise the following component according to weight parts: two hexamethylene triamine five methylenephosphonic acid 10 parts, poly-epoxy succinic acid 2 parts, ammonium molybdate 15 parts, tetrahydroglyoxaline 5 parts, 7 parts, zinc sulfate, Trisodium Citrate 5 parts, poly aspartic acid 10 parts, EDTA10 part, ethyl acetate 24 parts, ethanol 18 parts, 19 parts, water.
The preparation method of the present embodiment, comprises the steps:
The first step, adds two hexamethylene triamine five methylenephosphonic acid, poly-epoxy succinic acid, tetrahydroglyoxaline, poly aspartic acid successively in ethyl acetate, stirs, obtain mixture A;
Second step, adds in said mixture A successively by ammonium molybdate, zinc sulfate, Trisodium Citrate and EDTA, is warming up to 92 DEG C, is cooled to 45 DEG C, adds the mixture of second alcohol and water after stirring 30min, and continue to stir 1h, rear standing naturally cooling, to obtain final product; Wherein, the stirring velocity in step one and step 2 is 90r/min.
performance Detection:
By the embodiment of the present invention 1 to 4 gained finished product and reference examples 1 to 2 gained finished product, recovered water is processed, the recovered water after process is used as after reinjected water, its scale inhibition effect and corrosion mitigating effect as follows:
Table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Reference examples 1 | Reference examples 2 | |
| Scale inhibition performance, % | 99.8 | 99.9 | 99.9 | 99.7 | 70 | 60 |
| Corrosion inhibition rate, % | 90 | 89.8 | 90 | 90 | 50 | 48 |
As can be seen from Table 1, in embodiment 1 to 4, embodiment 3 gained finished product best results, is considered as most preferred embodiment; Embodiment 3 is compared visible with reference examples 1 and reference examples 2, dimethyl formamide and polymaleic anhydride under the acting in conjunction of other each components of the present invention, to scale effect of the present invention and slow releasing function very crucial, can effectively improve scale-inhibiting properties of the present invention.
Claims (5)
1. oilfield exploitation Scale inhibitors, it is characterized in that, comprise the following component according to weight parts: two hexamethylene triamine five methylenephosphonic acid 3-12 part, poly-epoxy succinic acid 1-2 part, molybdate 10-18 part, tetrahydroglyoxaline 3-6 part, polymaleic anhydride 6-12 part, dimethyl formamide 1-5 part, zinc sulfate 5-8 part, Trisodium Citrate 3-6 part, poly aspartic acid 8-14 part, EDTA5-15 part, ethyl acetate 18-27 part, ethanol 15-19 part, water 16-20 part.
2. oilfield exploitation Scale inhibitors according to claim 1, it is characterized in that, comprise the following component according to weight parts: two hexamethylene triamine five methylenephosphonic acid 3-10 part, poly-epoxy succinic acid 1-2 part, molybdate 10-15 part, tetrahydroglyoxaline 3-5 part, polymaleic anhydride 6-10 part, dimethyl formamide 1-4 part, zinc sulfate 5-7 part, Trisodium Citrate 3-5 part, poly aspartic acid 8-10 part, EDTA5-10 part, ethyl acetate 18-24 part, ethanol 15-18 part, water 16-19 part.
3. an oilfield exploitation Scale inhibitors according to claim 1, it is characterized in that, comprise the following component according to weight parts: two hexamethylene triamine five methylenephosphonic acid 10 parts, poly-epoxy succinic acid 2 parts, molybdate 15 parts, tetrahydroglyoxaline 5 parts, polymaleic anhydride 10 parts, dimethyl formamide 4 parts, 7 parts, zinc sulfate, Trisodium Citrate 5 parts, poly aspartic acid 10 parts, EDTA10 part, ethyl acetate 24 parts, ethanol 18 parts, 19 parts, water.
4. an oilfield exploitation Scale inhibitors according to claim 1, is characterized in that, described molybdate is ammonium molybdate.
5. the preparation method of oilfield exploitation Scale inhibitors according to claim 1, is characterized in that, comprise the steps:
The first step, adds two hexamethylene triamine five methylenephosphonic acid, poly-epoxy succinic acid, tetrahydroglyoxaline, polymaleic anhydride, dimethyl formamide, poly aspartic acid successively in ethyl acetate, stirs, obtain mixture A;
Second step, adds molybdate, zinc sulfate, Trisodium Citrate and EDTA successively in said mixture A, is warming up to 90-95 DEG C, is cooled to 45 DEG C, adds the mixture of second alcohol and water after stirring 30min, and continue to stir 1h, rear standing naturally cooling, to obtain final product; Wherein, the stirring velocity in step one and step 2 is 90-120r/min.
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| CN201410375524.9A CN104150618B (en) | 2014-08-01 | 2014-08-01 | Oilfield exploitation Scale inhibitors and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104528961A (en) * | 2014-12-29 | 2015-04-22 | 江苏健神生物农化有限公司 | Scale and corrosion inhibitor for oilfield reinjection water and preparation method thereof |
| CN106396147A (en) * | 2016-12-06 | 2017-02-15 | 无锡龙盈环保科技有限公司 | Environment-friendly scale inhibitor and preparation method thereof |
| CN115057541A (en) * | 2022-07-13 | 2022-09-16 | 安徽贝迪环保科技有限公司 | Efficient scale and corrosion inhibitor for circulating water |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001047087A (en) * | 1999-08-10 | 2001-02-20 | Dainippon Ink & Chem Inc | Water system cleaning agent |
| CN102911651A (en) * | 2012-11-09 | 2013-02-06 | 天津亿利科能源科技发展股份有限公司 | Oil field compound type anti-scale corrosion inhibitor and preparation method thereof |
| CN103805152A (en) * | 2014-02-24 | 2014-05-21 | 山东省泰和水处理有限公司 | Scale and corrosion inhibitor for oilfield water injection and preparation method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001047087A (en) * | 1999-08-10 | 2001-02-20 | Dainippon Ink & Chem Inc | Water system cleaning agent |
| CN102911651A (en) * | 2012-11-09 | 2013-02-06 | 天津亿利科能源科技发展股份有限公司 | Oil field compound type anti-scale corrosion inhibitor and preparation method thereof |
| CN103805152A (en) * | 2014-02-24 | 2014-05-21 | 山东省泰和水处理有限公司 | Scale and corrosion inhibitor for oilfield water injection and preparation method thereof |
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