CN106396141A - Scale inhibitor for oilfield water injection - Google Patents
Scale inhibitor for oilfield water injection Download PDFInfo
- Publication number
- CN106396141A CN106396141A CN201610893207.5A CN201610893207A CN106396141A CN 106396141 A CN106396141 A CN 106396141A CN 201610893207 A CN201610893207 A CN 201610893207A CN 106396141 A CN106396141 A CN 106396141A
- Authority
- CN
- China
- Prior art keywords
- parts
- phosphonic acid
- water
- shitosan
- ethylene diamine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/12—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen
- C02F5/125—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen combined with inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/14—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
- C02F5/145—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus combined with inorganic substances
Abstract
The invention belongs to the technical field of oilfield water treatment and relates to a scale inhibitor for oilfield water injection. The technical scheme includes that the scale inhibitor for oilfield water injection is characterized by being prepared from, by weight, 1-3 parts of amino trimethylene phosphonic acid, 1-2 parts of etidronic acid, 2-4 parts of ethylenediamine tetra(methylene phosphonic acid) sodium, 4-8 parts of ammonium molybdate, 6-10 parts of EDTA (ethylene diamine tetraacetic acid), 6-10 parts of polyaspartic acid, 1-3 parts of chitosan and 20-35 parts of water. The scale inhibitor for oilfield water injection is environment friendly.
Description
Technical field：The present invention relates to a kind of oil-field flooding antisludging agent, belong to produced water treatment field.
Background technology：
Water flood recovery is the major way of China's oil field development.The companion that water filling main source is separated for oil field mining liquid
Unboiled water.And oil field associated water complicated component, salinity is high, and antibacterial, content of microorganisms are big, and be dissolved with carbon dioxide, hydrogen sulfide,
The corrosive gas such as oxygen, easily cause corrosion and the fouling of flood pattern.With the growth of oilfield exploitation time, injection water quality
Continuous deterioration, corrosion is also on the rise with fouling, the serious normal production affecting oil field, and economic loss is huge.In order to subtract
The corrosion of slow oil field flood pattern and fouling are it is common practice that add corrosion inhibiter and antisludging agent in oil-field flooding.
Existing corrosion inhibiter has multiple, from different angles corrosion inhibiter can be classified, by chemical composition classification, can be divided into no
Machine corrosion inhibiter and organic inhibitor.Inorganic inhibitor mainly include chromate, nitrite, silicate, molybdate, tungstates,
Quadrafos, zinc salt etc..Because in inorganic inhibitor, silicate slow release effect is poor, zinc salt, chromic salts can cause heavy metal pollution, gather
Phosphate can lead to the problems such as body eutrophication, molybdate high cost, and people progressively turn to organic slow to the selection of slow releasing agent
Erosion agent, mainly includes phosphonate, phosphine carboxylic acid, mercaptobenzothiazoler, azimidobenzene, lignosulfonate etc. and contains the miscellaneous of oxynitride
Cycle compound.The purpose that consumption is few, effect is good can also be reached by compounding several corrosion inhibiter.
Though commercially available built agent antisludging agent has certain scale effect to recovered water, due to antisludging agent formula itself
Impact is so that its effect on driving birds is not good, and does not weaken the scaling rate in recovered water, can only temporarily suppress scale inhibition phenomenon.And wherein
Containing heavy metallic salt, there is certain pollution to subsoil water.
Content of the invention
Goal of the invention：It is an object of the invention to provide a kind of oil-field flooding antisludging agent of environmental protection.
The technical scheme is that：A kind of oil-field flooding antisludging agent is it is characterised in that contain ATMP
1-3 part, 1-hydroxy ethylidene-1,1-diphosphonic acid 1-2 part, ethylene diamine tetra methylene phosphonic acid sodium 2-4 part, ammonium molybdate 4-8 part, EDTA6-10 part, poly- sky
Winter propylhomoserin 6-10 part, shitosan 1-3 part, water 20-35 part.
Currently preferred technical scheme is：A kind of oil-field flooding antisludging agent is it is characterised in that contain amino three methene
Phosphonic acids 1.5-2.5 part, 1-hydroxy ethylidene-1,1-diphosphonic acid 1.2-1.8 part, ethylene diamine tetra methylene phosphonic acid sodium 2.3-3.6 part, ammonium molybdate 4.4-
7.6 parts, EDTA6.8-9.5 part, poly-aspartate 6.8-9.6 part, shitosan 1.2-2.8 part, water 23-33 part.
Currently preferred technical scheme is：A kind of oil-field flooding antisludging agent is it is characterised in that contain amino three methene
1.5 parts of phosphonic acids, 1.8 parts of 1-hydroxy ethylidene-1,1-diphosphonic acid, 2.3 parts of ethylene diamine tetra methylene phosphonic acid sodium, 7.6 parts of ammonium molybdate, EDTA6.8 part,
9.6 parts of poly-aspartate, 1.2 parts of shitosan, 23 parts of water.
Currently preferred technical scheme is：A kind of oil-field flooding antisludging agent is it is characterised in that contain amino three methene
2.5 parts of phosphonic acids, 1.2 parts of 1-hydroxy ethylidene-1,1-diphosphonic acid, 3.6 parts of ethylene diamine tetra methylene phosphonic acid sodium, 4.4 parts of ammonium molybdate, EDTA9.5 part,
6.8 parts of poly-aspartate, 2.8 parts of shitosan, 33 parts of water.
Currently preferred technical scheme is：A kind of oil-field flooding antisludging agent is it is characterised in that contain amino three methene
2 parts of phosphonic acids, 1.5 parts of 1-hydroxy ethylidene-1,1-diphosphonic acid, 3 parts of ethylene diamine tetra methylene phosphonic acid sodium, 6 parts of ammonium molybdate, EDTA8 part, poly- Radix Asparagi ammonia
8 parts of acid, 2 parts of shitosan, 28 parts of water.
The preparation method of antisludging agent of the present invention it is characterised in that
Take the shitosan of formula ratio, add in the water of formula ratio, be heated to 40-60 degree, stirring and dissolving；Then sequentially add
The ATMP of formula ratio, 1-hydroxy ethylidene-1,1-diphosphonic acid, ethylene diamine tetra methylene phosphonic acid sodium, ammonium molybdate, EDTA, poly- Radix Asparagi ammonia
Acid, stirring while adding, obtain product of the present invention after stirring.
In technical solution of the present invention, ATMP is nitrogenous organic multicomponent phosphonic acids, belongs to cathode type corrosion inhibiter, with nothing
Machine Quadrafos are compared, and corrosion inhibition rate is high 3～5 times.Water-miscible, nontoxic pollution-free, chemical stability and temperature tolerance good,
Still there is good scale inhibition effect at 200 DEG C.EDTMPS can be dissociated into 8 negative ions in aqueous, thus can with multiple
Metal ion-chelant, forms the netted complex of multiple monomer structure macromole, is loosely dispersed in water, and makes calcium dirt normal crystallization
Destroyed；1-hydroxy ethylidene-1,1-diphosphonic acid is a kind of organophosphors acids anti-incrustation corrosion inhibitor, can be with the many kinds of metal ions shape such as ferrum, copper, zinc
Become stable complex, the oxide of metal surface can be dissolved.HEDP remains to play good corrosion-mitigation scale-inhibition work at 250 DEG C
With, still very stable at a high ph, not facile hydrolysiss, it is not easily decomposed under general light and heat condition；Ethylene diamine tetra methylene phosphonic acid sodium has
Good chelating, lower bound suppress and distortion of lattice effect.The scaling salt class can be stoped in water, particularly calcium carbonate scale to form incrustation scale
Formed.ATMP stable chemical nature in water, not facile hydrolysiss.
Beneficial effect：Reasonable compatibility through several compositions, obtains that scale inhibition effect is good, has certain slow releasing function simultaneously
Antisludging agent of the present invention.
The invention provides a kind of oil-field flooding antisludging agent of environmental protection, its scale inhibition performance may be up to 99.9%；This
Bright also have excellent corrosion inhibition while scale inhibition, pipeline precocity will not be injured, corrosion inhibition rate is up to 90% after use.
Embodiment 1, ATMP 100g, 1-hydroxy ethylidene-1,1-diphosphonic acid 200g, ethylene diamine tetra methylene phosphonic acid sodium 200g,
Ammonium molybdate 800g, EDTA600g, poly-aspartate 1000g, shitosan 100g, water 2000g part.Preparation side as described in technical scheme
Prepared by method.
Embodiment 2, ATMP 300g, 1-hydroxy ethylidene-1,1-diphosphonic acid 100g, ethylene diamine tetra methylene phosphonic acid sodium 400g,
Ammonium molybdate 400g, EDTA1000g, poly-aspartate 600g, shitosan 300g, water 3500g.Preparation method as described in technical scheme
Preparation.
Embodiment 3, ATMP 150g, 1-hydroxy ethylidene-1,1-diphosphonic acid 180g, ethylene diamine tetra methylene phosphonic acid sodium 230g,
Ammonium molybdate 760g, EDTA680g, poly-aspartate 960g, shitosan 120g, water 2300g.Preparation method as described in technical scheme
Preparation.
Embodiment 4, ATMP 250g, 1-hydroxy ethylidene-1,1-diphosphonic acid 120g, ethylene diamine tetra methylene phosphonic acid sodium 360g,
Ammonium molybdate 440g, EDTA950g, poly-aspartate 680g, shitosan 280g, water 3300g.Preparation method as described in technical scheme
Preparation.
Embodiment 5, ATMP 200g, 1-hydroxy ethylidene-1,1-diphosphonic acid 150g, ethylene diamine tetra methylene phosphonic acid sodium 300g,
Ammonium molybdate 600g, EDTA800g, poly-aspartate 800g, shitosan 200g, water 2800g.Preparation method as described in technical scheme
Preparation.
Test example 1, by embodiment of the present invention 1-5 products obtained therefrom, certain recovered water is processed, by process after recovered water
After reinjected water, its scale inhibition effect and inhibition effect recording are in table 1.
Scale inhibition effect uses：The assay method of industrial circulating water scale-inhibiting properties ----static method；Corrosion rate is using selection
Turn hanging slice method, GB/T18175-2000.
Table 1
| Scale inhibition performance, % | Slow release rate, % | |
| Embodiment 1 product | 99.8 | 91.8 |
| Embodiment 2 product | 99.7 | 93.4 |
| Embodiment 3 product | 100.0 | 95.8 |
| Embodiment 4 product | 100.1 | 95.4 |
| Embodiment 5 product | 100.0 | 95.0 |
Table 1 data illustrates that product of the present invention has good scale effect, also has slow releasing function concurrently simultaneously.
Claims (6)
1. a kind of oil-field flooding antisludging agent is it is characterised in that contain ATMP 1-3 part, 1-hydroxy ethylidene-1,1-diphosphonic acid
1-2 part, ethylene diamine tetra methylene phosphonic acid sodium 2-4 part, ammonium molybdate 4-8 part, EDTA6-10 part, poly-aspartate 6-10 part, shitosan
1-3 part, water 20-35 part.
2. oil-field flooding antisludging agent described in claim 1 is it is characterised in that contain ATMP 1.5-2.5 part, hydroxyl
Base ethylene-diphosphonic acid 1.2-1.8 part, ethylene diamine tetra methylene phosphonic acid sodium 2.3-3.6 part, ammonium molybdate 4.4-7.6 part, EDTA6.8-9.5
Part, poly-aspartate 6.8-9.6 part, shitosan 1.2-2.8 part, water 23-33 part.
3. oil-field flooding antisludging agent described in claim 1 is it is characterised in that contain 1.5 parts of ATMP, hydroxyl second
1.8 parts of di 2 ethylhexyl phosphonic acid of fork, 2.3 parts of ethylene diamine tetra methylene phosphonic acid sodium, 7.6 parts of ammonium molybdate, EDTA6.8 part, 9.6 parts of poly-aspartate,
1.2 parts of shitosan, 23 parts of water.
4. oil-field flooding antisludging agent described in claim 1 is it is characterised in that contain 2.5 parts of ATMP, hydroxyl second
1.2 parts of di 2 ethylhexyl phosphonic acid of fork, 3.6 parts of ethylene diamine tetra methylene phosphonic acid sodium, 4.4 parts of ammonium molybdate, EDTA9.5 part, 6.8 parts of poly-aspartate,
2.8 parts of shitosan, 33 parts of water.
5. oil-field flooding antisludging agent described in claim 1 is it is characterised in that contain 2 parts of ATMP, hydroxy ethylidene
1.5 parts of di 2 ethylhexyl phosphonic acid, 3 parts of ethylene diamine tetra methylene phosphonic acid sodium, 6 parts of ammonium molybdate, EDTA8 part, 8 parts of poly-aspartate, 2 parts of shitosan,
28 parts of water.
6. antisludging agent described in claim 1 preparation method it is characterised in that
Take the shitosan of formula ratio, add in the water of formula ratio, be heated to 40-60 degree, stirring and dissolving；Then sequentially add formula
The ATMP of amount, 1-hydroxy ethylidene-1,1-diphosphonic acid, ethylene diamine tetra methylene phosphonic acid sodium, ammonium molybdate, EDTA, poly-aspartate,
Stirring while adding, obtain product of the present invention after stirring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610893207.5A CN106396141A (en) | 2016-09-29 | 2016-09-29 | Scale inhibitor for oilfield water injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610893207.5A CN106396141A (en) | 2016-09-29 | 2016-09-29 | Scale inhibitor for oilfield water injection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106396141A true CN106396141A (en) | 2017-02-15 |
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ID=59228641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610893207.5A Pending CN106396141A (en) | 2016-09-29 | 2016-09-29 | Scale inhibitor for oilfield water injection |
Country Status (1)
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| CN (1) | CN106396141A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107652959A (en) * | 2017-09-26 | 2018-02-02 | 天津亿利科能源科技发展股份有限公司 | A kind of oilfield transportation system and the neutral scale remover of flood pattern |
| CN108517525A (en) * | 2017-11-08 | 2018-09-11 | 西安瑞杰油田物资实业开发有限公司 | A kind of scale removal corrosion inhibiter and preparation method thereof |
| CN108654338A (en) * | 2018-05-15 | 2018-10-16 | 天津新翔油气技术有限公司 | A kind of oil gas water three phase H2S SCAVENGER and preparation method thereof |
| CN108726693A (en) * | 2018-05-07 | 2018-11-02 | 淄博科邦节能环保科技有限公司 | A kind of winter heating hot water pipe net high temperature corrosion inhibiting and descaling agent and preparation method thereof |
| CN115477934A (en) * | 2021-05-31 | 2022-12-16 | 中国石油天然气集团有限公司 | Reusable scale inhibition type fracturing fluid and preparation method thereof |
| EP4100142A4 (en) * | 2020-02-06 | 2024-02-28 | Solugen Inc | Protective compositions for use in systems comprising industrial water |
-
2016
- 2016-09-29 CN CN201610893207.5A patent/CN106396141A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107652959A (en) * | 2017-09-26 | 2018-02-02 | 天津亿利科能源科技发展股份有限公司 | A kind of oilfield transportation system and the neutral scale remover of flood pattern |
| CN108517525A (en) * | 2017-11-08 | 2018-09-11 | 西安瑞杰油田物资实业开发有限公司 | A kind of scale removal corrosion inhibiter and preparation method thereof |
| CN108726693A (en) * | 2018-05-07 | 2018-11-02 | 淄博科邦节能环保科技有限公司 | A kind of winter heating hot water pipe net high temperature corrosion inhibiting and descaling agent and preparation method thereof |
| CN108726693B (en) * | 2018-05-07 | 2021-07-30 | 淄博科邦节能环保科技有限公司 | High-temperature corrosion and scale inhibitor for winter heating hot water pipe network and preparation method thereof |
| CN108654338A (en) * | 2018-05-15 | 2018-10-16 | 天津新翔油气技术有限公司 | A kind of oil gas water three phase H2S SCAVENGER and preparation method thereof |
| CN108654338B (en) * | 2018-05-15 | 2020-10-23 | 天津新翔油气技术有限公司 | Oil-gas-water three-phase hydrogen sulfide absorbent and preparation method thereof |
| EP4100142A4 (en) * | 2020-02-06 | 2024-02-28 | Solugen Inc | Protective compositions for use in systems comprising industrial water |
| CN115477934A (en) * | 2021-05-31 | 2022-12-16 | 中国石油天然气集团有限公司 | Reusable scale inhibition type fracturing fluid and preparation method thereof |
| CN115477934B (en) * | 2021-05-31 | 2024-01-19 | 中国石油天然气集团有限公司 | Reusable scale inhibition fracturing fluid and preparation method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170215 |