CN106630204A - Scale inhibitor for oilfield flooding - Google Patents
Scale inhibitor for oilfield flooding Download PDFInfo
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- CN106630204A CN106630204A CN201610893176.3A CN201610893176A CN106630204A CN 106630204 A CN106630204 A CN 106630204A CN 201610893176 A CN201610893176 A CN 201610893176A CN 106630204 A CN106630204 A CN 106630204A
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- ammonium
- water
- shitosan
- ethanol
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Classifications
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- 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
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention relates to a scale inhibitor for oilfield flooding, and belongs to the technical field of oilfield water treatment. According to the technical scheme, the scale inhibitor for oilfield flooding is characterized by containing 1 to 2 parts of 1H-benzotriazole, 2.2 to 3.8 parts of etidronic acid, 2.4 to 4.6 parts of polyhydric alcohol phosphate, 4.5 to 7.5 parts of hexamethylene tetramine, 6.8 to 9 parts of EDTA, 4.5 to 7.5 parts of ammonium molybdate, 4 to 9 parts of polyacrylic acid, 1 to 3 parts of chitosan, 1 part of ethanol and 20 to 35 parts of water. The scale inhibitor has good scale inhibition effects as well as certain sustained release effects.
Description
Technical field：The present invention relates to a kind of oil-field flooding antisludging agent, belongs 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 bacterium, content of microorganisms are big, and be dissolved with carbon dioxide, hydrogen sulfide,
The corrosive gas such as oxygen, easily cause the corrosion and fouling of flood pattern.With the growth of oilfield exploitation time, injection water quality
Continuous deterioration, corrosion is also on the rise with fouling, and the serious normal production for affecting oil field, economic loss is huge.In order to subtract
The corrosion and fouling of slow oil field flood pattern, it is common practice that add corrosion inhibiter and antisludging agent in oil-field flooding.
Existing corrosion inhibiter has various, and corrosion inhibiter can be classified from different angles, classifies by chemical composition, can be divided into nothing
Machine corrosion inhibiter and organic inhibitor.Inorganic inhibitor mainly include chromate, nitrite, silicate, molybdate, tungstates,
Quadrafos, zinc salt etc..Because silicate slow release effect is poor in inorganic inhibitor, zinc salt, chromic salts can cause heavy metal pollution, gather
The problems such as phosphate can cause body eutrophication, molybdate high cost, selection of the people to sustained release agent progressively turns to organic slow
Erosion agent, mainly including phosphonate, phosphine carboxylic acid, mercaptobenzothiazoler, azimidobenzene, lignosulfonate etc. containing the miscellaneous of oxynitrides
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, with certain scale effect, is filled a prescription to recovered water due to antisludging agent itself
Affect so that its effect on driving birds is not good, and do 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 underground water.When being killed using the non-oxidizable of quaternary ammonium salt type in circulation
During bacterium algicide, if compatibility is improper, the drug effect of organic phosphonate or polycarboxylate antisludging agent in antisludging agent can be reduced.
The 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 antisludging agent is fitted
For any system.
The technical scheme is that：A kind of oil-field flooding antisludging agent, it is characterised in that containing phenylpropyl alcohol triazole 1-2
Part, 1-hydroxy ethylidene-1,1-diphosphonic acid 2-4 parts, polyalcohol phosphonate ester 2-5 parts, the ammonium 4-8 parts of six methine four, EDTA6-10 parts, ammonium molybdate
4-8 parts, polyacrylic acid 3-10 parts, shitosan 1-3 parts, 1 part of ethanol, water 20-35 parts.
The technical scheme is that：A kind of oil-field flooding antisludging agent, it is characterised in that containing phenylpropyl alcohol triazole 1-2
Part, 1-hydroxy ethylidene-1,1-diphosphonic acid 2.2-3.8 parts, polyalcohol phosphonate ester 2.4-4.6 parts, the ammonium 4.5-7.5 parts of six methine four,
EDTA6.8-9 parts, ammonium molybdate 4.5-7.5 parts, polyacrylic acid 4-9 parts, shitosan 1-3 parts, 1 part of ethanol, water 20-35 parts.
The technical scheme is that：A kind of oil-field flooding antisludging agent, it is characterised in that containing 1 part of phenylpropyl alcohol triazole,
3.8 parts of 1-hydroxy ethylidene-1,1-diphosphonic acid, 2.4 parts of polyalcohol phosphonate ester, 7.5 parts of six methines, four ammonium, EDTA6.8 parts, ammonium molybdate 7.5
Part, 4 parts of polyacrylic acid, 3 parts of shitosan, 1 part of ethanol, 20 parts of water.
The technical scheme is that：A kind of oil-field flooding antisludging agent, it is characterised in that containing 2 parts of phenylpropyl alcohol triazole,
2.2 parts of 1-hydroxy ethylidene-1,1-diphosphonic acid, 4.6 parts of polyalcohol phosphonate ester, 4.5 parts of six methines, four ammonium, EDTA9 parts, 4.5 parts of ammonium molybdate,
9 parts of polyacrylic acid, 1 part of shitosan, 1 part of ethanol, 35 parts of water.
The technical scheme is that：A kind of oil-field flooding antisludging agent, it is characterised in that containing phenylpropyl alcohol triazole 1.5
Part, 3 parts of 1-hydroxy ethylidene-1,1-diphosphonic acid, 4 parts of polyalcohol phosphonate ester, 6 parts of six methines, four ammonium, EDTA8 parts, 6 parts of ammonium molybdate, polypropylene
8 parts of acid, 2 parts of shitosan, 1 part of ethanol, 30 parts of water.
The preparation method of antisludging agent of the present invention, it is characterised in that
The azimidobenzene of first step formula ratio is dissolved in the ethanol of formula ratio, stirring and dissolving；
Second step takes the shitosan of formula ratio, in adding the water of formula ratio, is heated to 40-60 degree, stirring and dissolving；Then according to
Phenylpropyl alcohol triazole, 1-hydroxy ethylidene-1,1-diphosphonic acid, polyalcohol phosphonate ester, the ammonium of six methine four, EDTA, the molybdic acid of secondary addition formula ratio
Ammonium, polyacrylic acid, shitosan, it is stirring while adding uniform；
3rd step mixes first step second step resulting solution, and product of the present invention is obtained after stirring.
In technical solution of the present invention, BTA has corrosion protection to act in the metal materials such as copper, aluminium, cast iron, nickel, zinc, can
Coordinate with various corrosion inhibiter and improve corrosion mitigating effect；1-hydroxy ethylidene-1,1-diphosphonic acid is a kind of organophosphor acids anti-incrustation corrosion inhibitor, can with iron,
The many kinds of metal ions such as copper, zinc form stable complex compound, can dissolve the oxide of metal surface, remain to play at 250 DEG C
Good corrosion-mitigation scale-inhibition effect, still very stable at a high ph, facile hydrolysis, is not easily decomposed under general light and heat condition；Polyalcohol
Phosphonate ester has certain surface-active, has special efficacy to stablizing Ca2+, Mg2+ plasma, when in circulation adopt quaternary ammonium salt
During the non-oxydizing sterilization algicide of type, polyalcohol phosphonate ester will not be also easy to produce ion network as organic phosphonate or polycarboxylate
Compound is precipitated and reduces both drug effects.
Beneficial effect：The reasonable compatibility of several compositions of Jing, is acted synergistically, and it is good to achieve fine scale inhibition effect, together
When the antisludging agent of the present invention with certain slow releasing function.Product of the present invention is particularly suited for the oil-field flooding sterilized with quaternary ammonium salt
Use scale inhibition.
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 with excellent corrosion inhibition, pipeline precocity to be injured after use while scale inhibition, corrosion inhibition rate is up to 90%.
Embodiment 1, phenylpropyl alcohol triazole 100g, 1-hydroxy ethylidene-1,1-diphosphonic acid 400g, polyalcohol phosphonate ester 200g, six methines four
Ammonium 800g, EDTA600g, ammonium molybdate 800g, polyacrylic acid 300g, shitosan 300g, ethanol 100g, water 2000g.By technical side
It is prepared by preparation method described in case.
Embodiment 2, phenylpropyl alcohol triazole 200g, 1-hydroxy ethylidene-1,1-diphosphonic acid 400g, polyalcohol phosphonate ester 500g, six methines four
Ammonium 400g, EDTA1000g, ammonium molybdate 400g, polyacrylic acid 1000g, shitosan 100g, ethanol 100g, water 3500g.By technology
It is prepared by preparation method described in scheme.
Embodiment 3, phenylpropyl alcohol triazole 100g, 1-hydroxy ethylidene-1,1-diphosphonic acid 380g, polyalcohol phosphonate ester 240g, six methines four
Ammonium 750g, EDTA680g, ammonium molybdate 750g, polyacrylic acid 400g, shitosan 300g, ethanol 100g, water 2000g.By technical side
It is prepared by preparation method described in case.
Embodiment 4, phenylpropyl alcohol triazole 200g, 1-hydroxy ethylidene-1,1-diphosphonic acid 220g, polyalcohol phosphonate ester 460g, six methines four
Ammonium 450g, EDTA900g, ammonium molybdate 450g, polyacrylic acid 900g, shitosan 100g, ethanol 100g, water 3500g.By technical side
It is prepared by preparation method described in case.
Embodiment 5, phenylpropyl alcohol triazole 150g, 1-hydroxy ethylidene-1,1-diphosphonic acid 300g, polyalcohol phosphonate ester 400g, six methines four
Ammonium 600g, EDTA800g, ammonium molybdate 600g, polyacrylic acid 800g, shitosan 200g, ethanol 100g, water 3000g.By technical side
It is prepared by preparation method described in case.
Test example 1, by embodiment of the present invention 1-5 products obtained therefrom, certain recovered water is processed, by the recovered water after process
After reinjected water, its scale inhibition effect and inhibition effect recording are in table 1.
Scale inhibition effect is used：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, % | Sustained release rate, % | |
| The product of embodiment 1 | 99.5 | 93.8 |
| The product of embodiment 2 | 99.8 | 94.4 |
| The product of embodiment 3 | 100.0 | 96.8 |
| The product of embodiment 4 | 100.1 | 97.4 |
| The product of embodiment 5 | 100.0 | 97.0 |
The data of table 1 illustrate that product of the present invention has good scale effect, while also having slow releasing function concurrently.
Claims (6)
1. a kind of oil-field flooding antisludging agent, it is characterised in that containing phenylpropyl alcohol triazole 1-2 part, 1-hydroxy ethylidene-1,1-diphosphonic acid 2-4
Part, polyalcohol phosphonate ester 2-5 parts, the ammonium 4-8 parts of six methine four, EDTA6-10 parts, ammonium molybdate 4-8 parts, polyacrylic acid 3-10 parts,
Shitosan 1-3 parts, 1 part of ethanol, water 20-35 parts.
2. oil-field flooding antisludging agent described in claim 1, it is characterised in that containing phenylpropyl alcohol triazole 1-2 part, hydroxy ethylidene two
Phosphonic acids 2.2-3.8 parts, polyalcohol phosphonate ester 2.4-4.6 parts, the ammonium 4.5-7.5 parts of six methine four, EDTA6.8-9 parts, ammonium molybdate
4.5-7.5 parts, polyacrylic acid 4-9 parts, shitosan 1-3 parts, 1 part of ethanol, water 20-35 parts.
3. oil-field flooding antisludging agent described in claim 1, it is characterised in that containing 1 part of phenylpropyl alcohol triazole, 1-hydroxy ethylene-1,1-diphosphonic
3.8 parts of acid, 2.4 parts of polyalcohol phosphonate ester, 7.5 parts of six methines, four ammonium, EDTA6.8 parts, 7.5 parts of ammonium molybdate, polyacrylic acid 4
Part, 3 parts of shitosan, 1 part of ethanol, 20 parts of water.
4. oil-field flooding antisludging agent described in claim 1, it is characterised in that containing 2 parts of phenylpropyl alcohol triazole, 1-hydroxy ethylene-1,1-diphosphonic
2.2 parts of acid, 4.6 parts of polyalcohol phosphonate ester, 4.5 parts of six methines, four ammonium, EDTA9 parts, 4.5 parts of ammonium molybdate, 9 parts of polyacrylic acid,
1 part of shitosan, 1 part of ethanol, 35 parts of water.
5. oil-field flooding antisludging agent described in claim 1, it is characterised in that containing 1.5 parts of phenylpropyl alcohol triazole, hydroxy ethylidene two
3 parts of phosphonic acids, 4 parts of polyalcohol phosphonate ester, 6 parts of six methines, four ammonium, EDTA8 parts, 6 parts of ammonium molybdate, 8 parts of polyacrylic acid, shitosan 2
Part, 1 part of ethanol, 30 parts of water.
6. the preparation method of oil-field flooding antisludging agent described in claim 1, it is characterised in that
The azimidobenzene of first step formula ratio is dissolved in the ethanol of formula ratio, stirring and dissolving；
Second step takes the shitosan of formula ratio, in adding the water of formula ratio, is heated to 40-60 degree, stirring and dissolving；Then successively
Add the phenylpropyl alcohol triazole of formula ratio, 1-hydroxy ethylidene-1,1-diphosphonic acid, polyalcohol phosphonate ester, the ammonium of six methine four, EDTA, ammonium molybdate,
Polyacrylic acid, shitosan, it is stirring while adding uniform；
3rd step mixes first step second step resulting solution, and product of the present invention is obtained after stirring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610893176.3A CN106630204A (en) | 2016-09-29 | 2016-09-29 | Scale inhibitor for oilfield flooding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610893176.3A CN106630204A (en) | 2016-09-29 | 2016-09-29 | Scale inhibitor for oilfield flooding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106630204A true CN106630204A (en) | 2017-05-10 |
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ID=58855187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610893176.3A Pending CN106630204A (en) | 2016-09-29 | 2016-09-29 | Scale inhibitor for oilfield flooding |
Country Status (1)
| Country | Link |
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| CN (1) | CN106630204A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113999662A (en) * | 2020-07-28 | 2022-02-01 | 中国石油化工股份有限公司 | Antioxidant, corrosion-inhibition and sterilization integrated agent as well as preparation method and application thereof |
-
2016
- 2016-09-29 CN CN201610893176.3A patent/CN106630204A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113999662A (en) * | 2020-07-28 | 2022-02-01 | 中国石油化工股份有限公司 | Antioxidant, corrosion-inhibition and sterilization integrated agent as well as preparation method and application thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170510 |
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| WD01 | Invention patent application deemed withdrawn after publication |